Brightness control does not work with AMD Ryzen 5800H when using hybrid graphics on kernel updates 6.1.4+. I am using a Lenovo Legion Slim 7 (2021, 15ACH6) currently running Arch Linux with the mainline kernel 6.1.11, however, I have been testing my experience with this issue on every point revision from 6.1.3 to 6.1.11. CPU: AMD Ryzen 5 5800H with Radeon Graphics GPU: NVIDIA RTX 3060 Mobile / Max-Q (Proprietary NVIDIA driver, tested with 525.78.01-1 (version prior to 6.1.4 being released) and 525.89.02-1 (latest driver at time of writing)) System Memory: 40 GB Display: Laptop (Laptop Screen) The only parameters applied at boot on my system are: nvidia-drm.modeset=1 How to reproduce the issue: Enable hybrid graphics/Optimus in BIOS setup. Prior to kernel version 6.1.4, /sys/class/backlight contained two entries: amdgpu_bl0 and nvidia_wmi_ec_backlight With these two entries in /sys/class/backlight , I was able to write to their respective brightness files directly or use a program like light to change the values. Those values would change the brightness of the screen depending on if I was using the AMD GPU or NVIDIA GPU to display the current application. I could set these values to roughly the same thing to achieve an overall complete brightness experience regardless of whether or not I was currently running an application on my integrated (AMD) GPU or dedicated (NVIDIA) GPU. Then, upon updating to kernel versions 6.1.4+, there is no longer an amdgpu_bl0 entry in /sys/class/backlight , just a nvidia_wmi_ec_backlight entry, making it impossible for me to change the brightness on my display when using the iGPU. Interestingly, on kernels 6.1.4+, running "journalctl -b -0 | grep backlight" returns an output "amdgpu: [drm] Skipping amdgpu DM backlight registration", which was not present in prior kernel versions. However, if I instead prepend the option "acpi_backlight=native" to my kernel command line options at boot, "amdgpu_bl0" is once again present in /sys/class/backlight but "nvidia_wmi_ec_backlight" has now disappeared and is nowhere to be seen making it so I can change the brightness when using the iGPU, but the brightness is stuck at max when using the dedicated GPU. Running the above journalctl command at this point returns no errors relating to my AMD GPU and does not mention anything about the NVIDIA GPU. Trying different acpi_backlight options on 6.1.4+ does not fix the issue and instead removes functionality. acpi_backlight=vendor makes an entry called "ideapad" pop up in /sys/class/backlight with nothing else. Changing the brightness values in ideapad does nothing. acpi_backlight=video makes only two entries appear in /sys/class/backlight, acpi_video0 and acpi_video1. Changing the brightness values in either of these directories does nothing. acpi_backlight=none causes nothing to appear under /sys/class/backlight. If hybrid graphics is disabled, the display is connected to the NVIDIA GPU and /sys/class/backlight/nvidia_0 is present, the NVIDIA driver can change the display brightness without a problem.p Below is my lscpi -nn and dmidecode outputs on kernel 6.1.3 and 6.1.11. dmidecode 6.1.3: # dmidecode 3.4 Getting SMBIOS data from sysfs. SMBIOS 3.3.0 present. Table at 0xCA234000. Handle 0x0000, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x0001, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 64 GB Error Information Handle: 0x0000 Number Of Devices: 2 Handle 0x0002, DMI type 19, 31 bytes Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x009FFFFFFFF Range Size: 40 GB Physical Array Handle: 0x0001 Partition Width: 2 Handle 0x0003, DMI type 7, 27 bytes Cache Information Socket Designation: L1 - Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 512 kB Maximum Size: 512 kB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 8-way Set-associative Handle 0x0004, DMI type 7, 27 bytes Cache Information Socket Designation: L2 - Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Back Location: Internal Installed Size: 4 MB Maximum Size: 4 MB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 8-way Set-associative Handle 0x0005, DMI type 7, 27 bytes Cache Information Socket Designation: L3 - Cache Configuration: Enabled, Not Socketed, Level 3 Operational Mode: Write Back Location: Internal Installed Size: 16 MB Maximum Size: 16 MB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 16-way Set-associative Handle 0x0006, DMI type 4, 48 bytes Processor Information Socket Designation: FP6 Type: Central Processor Family: Zen Manufacturer: Advanced Micro Devices, Inc. ID: 00 0F A5 00 FF FB 8B 17 Signature: Family 25, Model 80, Stepping 0 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) MMX (MMX technology supported) FXSR (FXSAVE and FXSTOR instructions supported) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) HTT (Multi-threading) Version: AMD Ryzen 7 5800H with Radeon Graphics Voltage: 1.2 V External Clock: 100 MHz Max Speed: 4450 MHz Current Speed: 3200 MHz Status: Populated, Enabled Upgrade: None L1 Cache Handle: 0x0003 L2 Cache Handle: 0x0004 L3 Cache Handle: 0x0005 Serial Number: Null Asset Tag: Null Part Number: Null Core Count: 8 Core Enabled: 8 Thread Count: 16 Characteristics: 64-bit capable Multi-Core Hardware Thread Execute Protection Enhanced Virtualization Power/Performance Control Handle 0x0007, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x0008, DMI type 17, 84 bytes Memory Device Array Handle: 0x0001 Error Information Handle: 0x0007 Total Width: 64 bits Data Width: 64 bits Size: 8 GB Form Factor: Row Of Chips Set: None Locator: DIMM 0 Bank Locator: P0 CHANNEL A Type: DDR4 Type Detail: Synchronous Unbuffered (Unregistered) Speed: 3200 MT/s Manufacturer: Hynix Serial Number: 00000000 Asset Tag: Not Specified Part Number: HMAA1GS6CJR6N-XN Rank: 1 Configured Memory Speed: 3200 MT/s Minimum Voltage: 1.2 V Maximum Voltage: 1.2 V Configured Voltage: 1.2 V Memory Technology: DRAM Memory Operating Mode Capability: Volatile memory Firmware Version: Unknown Module Manufacturer ID: Bank 1, Hex 0xAD Module Product ID: Unknown Memory Subsystem Controller Manufacturer ID: Unknown Memory Subsystem Controller Product ID: Unknown Non-Volatile Size: None Volatile Size: 8 GB Cache Size: None Logical Size: None Handle 0x0009, DMI type 20, 35 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x003FFFFFFFF Range Size: 16 GB Physical Device Handle: 0x0008 Memory Array Mapped Address Handle: 0x0002 Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x000A, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x000B, DMI type 17, 84 bytes Memory Device Array Handle: 0x0001 Error Information Handle: 0x000A Total Width: 64 bits Data Width: 64 bits Size: 32 GB Form Factor: SODIMM Set: None Locator: DIMM 0 Bank Locator: P0 CHANNEL B Type: DDR4 Type Detail: Synchronous Unbuffered (Unregistered) Speed: 3200 MT/s Manufacturer: Unknown Serial Number: 07050705 Asset Tag: Not Specified Part Number: F4-3200C22-32GRS Rank: 2 Configured Memory Speed: 3200 MT/s Minimum Voltage: 1.2 V Maximum Voltage: 1.2 V Configured Voltage: 1.2 V Memory Technology: DRAM Memory Operating Mode Capability: Volatile memory Firmware Version: Unknown Module Manufacturer ID: Bank 5, Hex 0xCD Module Product ID: Unknown Memory Subsystem Controller Manufacturer ID: Unknown Memory Subsystem Controller Product ID: Unknown Non-Volatile Size: None Volatile Size: 32 GB Cache Size: None Logical Size: None Handle 0x000C, DMI type 20, 35 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x009FFFFFFFF Range Size: 40 GB Physical Device Handle: 0x000B Memory Array Mapped Address Handle: 0x0002 Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x0011, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J137 Internal Connector Type: None External Reference Designator: Keyboard External Connector Type: PS/2 Port Type: Keyboard Port Handle 0x0012, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J140 Internal Connector Type: None External Reference Designator: Touch Pad External Connector Type: PS/2 Port Type: Mouse Port Handle 0x0013, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J115 Internal Connector Type: None External Reference Designator: Network External Connector Type: RJ-45 Port Type: Network Port Handle 0x0014, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J49 Internal Connector Type: None External Reference Designator: USB 3.1 A P0 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0015, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J70 Internal Connector Type: None External Reference Designator: USB 3.1 A P1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0016, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J39 Internal Connector Type: None External Reference Designator: USB 3.1 Type-C P0 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0017, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J43 Internal Connector Type: None External Reference Designator: USB 3.1 Type-C P1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0018, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J125 Internal Connector Type: None External Reference Designator: USB 2.0 A P0/1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0019, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J126 Internal Connector Type: None External Reference Designator: USB 2.0 A P2/3 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x001A, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J119 Internal Connector Type: None External Reference Designator: Micro USB External Connector Type: Access Bus (USB) Port Type: USB Handle 0x001B, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J136 Internal Connector Type: None External Reference Designator: Sata HDD External Connector Type: SAS/SATA Plug Receptacle Port Type: SATA Handle 0x001C, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J138 Internal Connector Type: None External Reference Designator: Sata ODD External Connector Type: SAS/SATA Plug Receptacle Port Type: SATA Handle 0x001D, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J129 Internal Connector Type: None External Reference Designator: Microphone External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x001E, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J120 Internal Connector Type: None External Reference Designator: Headphone External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x001F, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J7 Internal Connector Type: None External Reference Designator: ISP CAM External Connector Type: Other Port Type: Other Handle 0x0020, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J6 Internal Connector Type: None External Reference Designator: DP CONN External Connector Type: Other Port Type: Video Port Handle 0x0021, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J9 Internal Connector Type: None External Reference Designator: eDP CONN External Connector Type: Other Port Type: Video Port Handle 0x0022, DMI type 9, 17 bytes System Slot Information Designation: J10 Type: x8 PCI Express x8 Current Usage: Available Length: Short ID: 1 Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.1 Handle 0x0023, DMI type 9, 17 bytes System Slot Information Designation: J79 Type: x4 PCI Express x4 Current Usage: Available Length: Short ID: 2 Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.6 Handle 0x0024, DMI type 9, 17 bytes System Slot Information Designation: J92 Type: x1 M.2 Socket 1-SD Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.2 Handle 0x0025, DMI type 9, 17 bytes System Slot Information Designation: J90 Type: x1 M.2 Socket 2 Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.4 Handle 0x0026, DMI type 9, 17 bytes System Slot Information Designation: J19 Type: x2 M.2 Socket 3 Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.7 Handle 0x0027, DMI type 9, 17 bytes System Slot Information Designation: CON1 Type: x1 M.2 Socket 1-SD Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.5 Handle 0x0028, DMI type 10, 6 bytes On Board Device Information Type: Video Status: Enabled Description: AMD Renoir FP6 GPU Handle 0x0029, DMI type 10, 6 bytes On Board Device Information Type: Sound Status: Enabled Description: AZALIA HD Audio Handle 0x002A, DMI type 10, 6 bytes On Board Device Information Type: SATA Controller Status: Enabled Description: AMD Renoir FP6 Handle 0x002B, DMI type 10, 6 bytes On Board Device Information Type: Unknown Status: Enabled Description: ST TPM ST33TPMESPI Handle 0x002D, DMI type 13, 22 bytes BIOS Language Information Language Description Format: Abbreviated Installable Languages: 6 en-US fr-FR ja-JP ko-KR zh-CHT zh-CHS Currently Installed Language: en-US Handle 0x002F, DMI type 32, 11 bytes System Boot Information Status: No errors detected Handle 0x0031, DMI type 133, 5 bytes OEM-specific Type Header and Data: 85 05 31 00 01 Strings: KHOIHGIUCCHHII Handle 0x002E, DMI type 24, 5 bytes Hardware Security Power-On Password Status: Disabled Keyboard Password Status: Disabled Administrator Password Status: Disabled Front Panel Reset Status: Disabled Handle 0x0032, DMI type 248, 18 bytes OEM-specific Type Header and Data: F8 12 32 00 AC AC AA 17 00 00 00 00 00 00 00 00 00 00 Handle 0x002C, DMI type 11, 5 bytes OEM Strings String 1: Modern Preload Handle 0x000D, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: HACN39WW Release Date: 09/21/2022 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 16 MB Characteristics: ACPI is supported USB legacy is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.39 Firmware Revision: 1.39 Handle 0x000E, DMI type 1, 27 bytes System Information Manufacturer: LENOVO Product Name: 82K8 Version: Legion S7 15ACH6 Serial Number: PF38G30W UUID: 922ef788-1503-11ec-80f0-84a9381614b6 Wake-up Type: Power Switch SKU Number: LENOVO_MT_82K8_BU_idea_FM_Legion S7 15ACH6 Family: Legion S7 15ACH6 Handle 0x000F, DMI type 2, 15 bytes Base Board Information Manufacturer: LENOVO Product Name: LNVNB161216 Version: SDK0T76461WIN Serial Number: PF38G30W Asset Tag: No Asset Tag Features: Board is a hosting board Board is replaceable Location In Chassis: Base Board Chassis Location Chassis Handle: 0x0010 Type: Motherboard Contained Object Handles: 0 Handle 0x0010, DMI type 3, 22 bytes Chassis Information Manufacturer: LENOVO Type: Notebook Lock: Not Present Version: Legion S7 15ACH6 Serial Number: PF38G30W Asset Tag: No Asset Tag Boot-up State: Safe Power Supply State: Safe Thermal State: Other Security Status: Other OEM Information: 0x00000000 Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 SKU Number: Not Specified Handle 0x0030, DMI type 200, 16 bytes OEM-specific Type Header and Data: C8 10 30 00 01 02 01 27 01 14 01 20 B0 80 01 20 Strings: IdeaPad 82K80080US Handle 0x0033, DMI type 15, 31 bytes System Event Log Area Length: 34 bytes Header Start Offset: 0x0000 Header Length: 16 bytes Data Start Offset: 0x0010 Access Method: General-purpose non-volatile data functions Access Address: 0x00F0 Status: Valid, Not Full Change Token: 0x00000001 Header Format: Type 1 Supported Log Type Descriptors: 4 Descriptor 1: POST error Data Format 1: POST results bitmap Descriptor 2: PCI system error Data Format 2: None Descriptor 3: System reconfigured Data Format 3: None Descriptor 4: Log area reset/cleared Data Format 4: None Handle 0xFEFF, DMI type 127, 4 bytes End Of Table dmidecode 6.1.11: # dmidecode 3.4 Getting SMBIOS data from sysfs. SMBIOS 3.3.0 present. Table at 0xCA234000. Handle 0x0000, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x0001, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 64 GB Error Information Handle: 0x0000 Number Of Devices: 2 Handle 0x0002, DMI type 19, 31 bytes Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x009FFFFFFFF Range Size: 40 GB Physical Array Handle: 0x0001 Partition Width: 2 Handle 0x0003, DMI type 7, 27 bytes Cache Information Socket Designation: L1 - Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 512 kB Maximum Size: 512 kB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 8-way Set-associative Handle 0x0004, DMI type 7, 27 bytes Cache Information Socket Designation: L2 - Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Back Location: Internal Installed Size: 4 MB Maximum Size: 4 MB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 8-way Set-associative Handle 0x0005, DMI type 7, 27 bytes Cache Information Socket Designation: L3 - Cache Configuration: Enabled, Not Socketed, Level 3 Operational Mode: Write Back Location: Internal Installed Size: 16 MB Maximum Size: 16 MB Supported SRAM Types: Pipeline Burst Installed SRAM Type: Pipeline Burst Speed: 1 ns Error Correction Type: Multi-bit ECC System Type: Unified Associativity: 16-way Set-associative Handle 0x0006, DMI type 4, 48 bytes Processor Information Socket Designation: FP6 Type: Central Processor Family: Zen Manufacturer: Advanced Micro Devices, Inc. ID: 00 0F A5 00 FF FB 8B 17 Signature: Family 25, Model 80, Stepping 0 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) MMX (MMX technology supported) FXSR (FXSAVE and FXSTOR instructions supported) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) HTT (Multi-threading) Version: AMD Ryzen 7 5800H with Radeon Graphics Voltage: 1.2 V External Clock: 100 MHz Max Speed: 4450 MHz Current Speed: 3200 MHz Status: Populated, Enabled Upgrade: None L1 Cache Handle: 0x0003 L2 Cache Handle: 0x0004 L3 Cache Handle: 0x0005 Serial Number: Null Asset Tag: Null Part Number: Null Core Count: 8 Core Enabled: 8 Thread Count: 16 Characteristics: 64-bit capable Multi-Core Hardware Thread Execute Protection Enhanced Virtualization Power/Performance Control Handle 0x0007, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x0008, DMI type 17, 84 bytes Memory Device Array Handle: 0x0001 Error Information Handle: 0x0007 Total Width: 64 bits Data Width: 64 bits Size: 8 GB Form Factor: Row Of Chips Set: None Locator: DIMM 0 Bank Locator: P0 CHANNEL A Type: DDR4 Type Detail: Synchronous Unbuffered (Unregistered) Speed: 3200 MT/s Manufacturer: Hynix Serial Number: 00000000 Asset Tag: Not Specified Part Number: HMAA1GS6CJR6N-XN Rank: 1 Configured Memory Speed: 3200 MT/s Minimum Voltage: 1.2 V Maximum Voltage: 1.2 V Configured Voltage: 1.2 V Memory Technology: DRAM Memory Operating Mode Capability: Volatile memory Firmware Version: Unknown Module Manufacturer ID: Bank 1, Hex 0xAD Module Product ID: Unknown Memory Subsystem Controller Manufacturer ID: Unknown Memory Subsystem Controller Product ID: Unknown Non-Volatile Size: None Volatile Size: 8 GB Cache Size: None Logical Size: None Handle 0x0009, DMI type 20, 35 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x003FFFFFFFF Range Size: 16 GB Physical Device Handle: 0x0008 Memory Array Mapped Address Handle: 0x0002 Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x000A, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x000B, DMI type 17, 84 bytes Memory Device Array Handle: 0x0001 Error Information Handle: 0x000A Total Width: 64 bits Data Width: 64 bits Size: 32 GB Form Factor: SODIMM Set: None Locator: DIMM 0 Bank Locator: P0 CHANNEL B Type: DDR4 Type Detail: Synchronous Unbuffered (Unregistered) Speed: 3200 MT/s Manufacturer: Unknown Serial Number: 07050705 Asset Tag: Not Specified Part Number: F4-3200C22-32GRS Rank: 2 Configured Memory Speed: 3200 MT/s Minimum Voltage: 1.2 V Maximum Voltage: 1.2 V Configured Voltage: 1.2 V Memory Technology: DRAM Memory Operating Mode Capability: Volatile memory Firmware Version: Unknown Module Manufacturer ID: Bank 5, Hex 0xCD Module Product ID: Unknown Memory Subsystem Controller Manufacturer ID: Unknown Memory Subsystem Controller Product ID: Unknown Non-Volatile Size: None Volatile Size: 32 GB Cache Size: None Logical Size: None Handle 0x000C, DMI type 20, 35 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x009FFFFFFFF Range Size: 40 GB Physical Device Handle: 0x000B Memory Array Mapped Address Handle: 0x0002 Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x0011, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J137 Internal Connector Type: None External Reference Designator: Keyboard External Connector Type: PS/2 Port Type: Keyboard Port Handle 0x0012, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J140 Internal Connector Type: None External Reference Designator: Touch Pad External Connector Type: PS/2 Port Type: Mouse Port Handle 0x0013, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J115 Internal Connector Type: None External Reference Designator: Network External Connector Type: RJ-45 Port Type: Network Port Handle 0x0014, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J49 Internal Connector Type: None External Reference Designator: USB 3.1 A P0 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0015, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J70 Internal Connector Type: None External Reference Designator: USB 3.1 A P1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0016, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J39 Internal Connector Type: None External Reference Designator: USB 3.1 Type-C P0 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0017, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J43 Internal Connector Type: None External Reference Designator: USB 3.1 Type-C P1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0018, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J125 Internal Connector Type: None External Reference Designator: USB 2.0 A P0/1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0019, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J126 Internal Connector Type: None External Reference Designator: USB 2.0 A P2/3 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x001A, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J119 Internal Connector Type: None External Reference Designator: Micro USB External Connector Type: Access Bus (USB) Port Type: USB Handle 0x001B, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J136 Internal Connector Type: None External Reference Designator: Sata HDD External Connector Type: SAS/SATA Plug Receptacle Port Type: SATA Handle 0x001C, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J138 Internal Connector Type: None External Reference Designator: Sata ODD External Connector Type: SAS/SATA Plug Receptacle Port Type: SATA Handle 0x001D, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J129 Internal Connector Type: None External Reference Designator: Microphone External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x001E, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J120 Internal Connector Type: None External Reference Designator: Headphone External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x001F, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J7 Internal Connector Type: None External Reference Designator: ISP CAM External Connector Type: Other Port Type: Other Handle 0x0020, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J6 Internal Connector Type: None External Reference Designator: DP CONN External Connector Type: Other Port Type: Video Port Handle 0x0021, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J9 Internal Connector Type: None External Reference Designator: eDP CONN External Connector Type: Other Port Type: Video Port Handle 0x0022, DMI type 9, 17 bytes System Slot Information Designation: J10 Type: x8 PCI Express x8 Current Usage: Available Length: Short ID: 1 Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.1 Handle 0x0023, DMI type 9, 17 bytes System Slot Information Designation: J79 Type: x4 PCI Express x4 Current Usage: Available Length: Short ID: 2 Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.6 Handle 0x0024, DMI type 9, 17 bytes System Slot Information Designation: J92 Type: x1 M.2 Socket 1-SD Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.2 Handle 0x0025, DMI type 9, 17 bytes System Slot Information Designation: J90 Type: x1 M.2 Socket 2 Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.4 Handle 0x0026, DMI type 9, 17 bytes System Slot Information Designation: J19 Type: x2 M.2 Socket 3 Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.7 Handle 0x0027, DMI type 9, 17 bytes System Slot Information Designation: CON1 Type: x1 M.2 Socket 1-SD Current Usage: Available Length: Short Characteristics: 3.3 V is provided PME signal is supported Hot-plug devices are supported Bus Address: 0200:00:01.5 Handle 0x0028, DMI type 10, 6 bytes On Board Device Information Type: Video Status: Enabled Description: AMD Renoir FP6 GPU Handle 0x0029, DMI type 10, 6 bytes On Board Device Information Type: Sound Status: Enabled Description: AZALIA HD Audio Handle 0x002A, DMI type 10, 6 bytes On Board Device Information Type: SATA Controller Status: Enabled Description: AMD Renoir FP6 Handle 0x002B, DMI type 10, 6 bytes On Board Device Information Type: Unknown Status: Enabled Description: ST TPM ST33TPMESPI Handle 0x002D, DMI type 13, 22 bytes BIOS Language Information Language Description Format: Abbreviated Installable Languages: 6 en-US fr-FR ja-JP ko-KR zh-CHT zh-CHS Currently Installed Language: en-US Handle 0x002F, DMI type 32, 11 bytes System Boot Information Status: No errors detected Handle 0x0031, DMI type 133, 5 bytes OEM-specific Type Header and Data: 85 05 31 00 01 Strings: KHOIHGIUCCHHII Handle 0x002E, DMI type 24, 5 bytes Hardware Security Power-On Password Status: Disabled Keyboard Password Status: Disabled Administrator Password Status: Disabled Front Panel Reset Status: Disabled Handle 0x0032, DMI type 248, 18 bytes OEM-specific Type Header and Data: F8 12 32 00 AC AC AA 17 00 00 00 00 00 00 00 00 00 00 Handle 0x002C, DMI type 11, 5 bytes OEM Strings String 1: Modern Preload Handle 0x000D, DMI type 0, 24 bytes BIOS Information Vendor: LENOVO Version: HACN39WW Release Date: 09/21/2022 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 16 MB Characteristics: ACPI is supported USB legacy is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.39 Firmware Revision: 1.39 Handle 0x000E, DMI type 1, 27 bytes System Information Manufacturer: LENOVO Product Name: 82K8 Version: Legion S7 15ACH6 Serial Number: PF38G30W UUID: 922ef788-1503-11ec-80f0-84a9381614b6 Wake-up Type: Power Switch SKU Number: LENOVO_MT_82K8_BU_idea_FM_Legion S7 15ACH6 Family: Legion S7 15ACH6 Handle 0x000F, DMI type 2, 15 bytes Base Board Information Manufacturer: LENOVO Product Name: LNVNB161216 Version: SDK0T76461WIN Serial Number: PF38G30W Asset Tag: No Asset Tag Features: Board is a hosting board Board is replaceable Location In Chassis: Base Board Chassis Location Chassis Handle: 0x0010 Type: Motherboard Contained Object Handles: 0 Handle 0x0010, DMI type 3, 22 bytes Chassis Information Manufacturer: LENOVO Type: Notebook Lock: Not Present Version: Legion S7 15ACH6 Serial Number: PF38G30W Asset Tag: No Asset Tag Boot-up State: Safe Power Supply State: Safe Thermal State: Other Security Status: Other OEM Information: 0x00000000 Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 SKU Number: Not Specified Handle 0x0030, DMI type 200, 16 bytes OEM-specific Type Header and Data: C8 10 30 00 01 02 01 27 01 14 01 20 B0 80 01 20 Strings: IdeaPad 82K80080US Handle 0x0033, DMI type 15, 31 bytes System Event Log Area Length: 34 bytes Header Start Offset: 0x0000 Header Length: 16 bytes Data Start Offset: 0x0010 Access Method: General-purpose non-volatile data functions Access Address: 0x00F0 Status: Valid, Not Full Change Token: 0x00000001 Header Format: Type 1 Supported Log Type Descriptors: 4 Descriptor 1: POST error Data Format 1: POST results bitmap Descriptor 2: PCI system error Data Format 2: None Descriptor 3: System reconfigured Data Format 3: None Descriptor 4: Log area reset/cleared Data Format 4: None Handle 0xFEFF, DMI type 127, 4 bytes End Of Table lspci -nn 6.1.3: 00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex [1022:1630] 00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU [1022:1631] 00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:01.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge [1022:1633] 00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:01.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:02.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus [1022:1635] 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 51) 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51) 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0 [1022:166a] 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1 [1022:166b] 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2 [1022:166c] 00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3 [1022:166d] 00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4 [1022:166e] 00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5 [1022:166f] 00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6 [1022:1670] 00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7 [1022:1671] 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GA106M [GeForce RTX 3060 Mobile / Max-Q] [10de:2560] (rev a1) 01:00.1 Audio device [0403]: NVIDIA Corporation GA106 High Definition Audio Controller [10de:228e] (rev a1) 02:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a) 03:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8621] (rev 01) 04:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 [144d:a808] 05:00.0 Non-Volatile memory controller [0108]: Micron Technology Inc Device [1344:5405] 06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1638] (rev c5) 06:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor [1022:15df] 06:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639] 06:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639] 06:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor [1022:15e2] (rev 01) 06:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller [1022:15e3] lspci -nn 6.1.11: 00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex [1022:1630] 00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU [1022:1631] 00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:01.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge [1022:1633] 00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:01.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:02.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634] 00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632] 00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus [1022:1635] 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 51) 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51) 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0 [1022:166a] 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1 [1022:166b] 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2 [1022:166c] 00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3 [1022:166d] 00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4 [1022:166e] 00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5 [1022:166f] 00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6 [1022:1670] 00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7 [1022:1671] 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GA106M [GeForce RTX 3060 Mobile / Max-Q] [10de:2560] (rev a1) 01:00.1 Audio device [0403]: NVIDIA Corporation GA106 High Definition Audio Controller [10de:228e] (rev a1) 02:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a) 03:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8621] (rev 01) 04:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 [144d:a808] 05:00.0 Non-Volatile memory controller [0108]: Micron Technology Inc Device [1344:5405] 06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [1002:1638] (rev c5) 06:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor [1022:15df] 06:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639] 06:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639] 06:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor [1022:15e2] (rev 01) 06:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller [1022:15e3]
(In reply to albimarini4283 from comment #0) > The only parameters applied at boot on my system are: nvidia-drm.modeset=1 Have you tried what happens without that parameter?
(In reply to The Linux kernel's regression tracker (Thorsten Leemhuis) from comment #1) > (In reply to albimarini4283 from comment #0) > > The only parameters applied at boot on my system are: nvidia-drm.modeset=1 > > Have you tried what happens without that parameter? Yes, I did. It makes no difference on 6.1.3, and on 6.1.11 the behavior is still the same. Only nvidia_wmi_ec_backlight is present in /sys/class/backlight, and if I also add acpi_backlight=native to the parameters on 6.1.11, amdgpu_bl0 appears in /sys/class/backlight, and the nvidia backlight disappears.
Yes this has already been reported on the malinglist. There unfortunately is a firmware bug on the Lenovo Legion models. On models with the Nvidia WMI EC backlight interface, when the laptop is configured in dynamic mux mode in the BIOS (1) the backlight should always be controlled by the Nvidia WMI EC backlight interface. So in theory the kernel is behaving as it should according to the documentation here. But as you found out, some Legion models are not behaving as the Nvidia WMI spec says they should behave. This is also why you needed the hack/script to write brightness values to both backlight devices at the same time with older kernels. Daniel Dadap from Nvidia is looking into this, but I'm afraid that we don't have a solution yet. 1) So that you can switch at runtime which GPU is connected to the builtin LCD panel
Created attachment 303727 [details] [PATCH] platform/x86: nvidia-wmi-ec-backlight: Add force module parameter I don't know if you know how to build your own kernels. If you do here is a patch which adds a force parameter to the nvidia-wmi-ec-backlight driver. This allows specifying the following on the kernel commandline to get the old behavior back (as a workaround for now). This is not a proper fix, we are still investigating how to fix this properly.
(In reply to Hans de Goede from comment #4) > Created attachment 303727 [details] > [PATCH] platform/x86: nvidia-wmi-ec-backlight: Add force module parameter > > I don't know if you know how to build your own kernels. > > If you do here is a patch which adds a force parameter to the > nvidia-wmi-ec-backlight driver. This allows specifying the following on the > kernel commandline to get the old behavior back (as a workaround for now). > > This is not a proper fix, we are still investigating how to fix this > properly. I managed to apply the patch to kernel 6.1.2, using the kernel commandline "acpi_backlight=native nvidia_wmi_ec_baclight.force=1" restored the previous behaviors of kernels 6.1.3 and prior on the latest stable release. Thank you for the clarification about the problem with the Nvidia WMI EC backlight interface, and I'll definitely be interested in hearing about future development with the Legion models.
Meant to write kernel 6.1.12*, not 6.1.2
Thank you for testing the patch. I have pushed this to pdx86/for-next now so that it will go to Linus during the upcoming merge-window and on to the stable kernel series from there.
(In reply to Hans de Goede from comment #7) > Thank you for testing the patch. > > I have pushed this to pdx86/for-next now so that it will go to Linus during > the upcoming merge-window and on to the stable kernel series from there. Sounds good, I'll look forward to the patch on new stable releases
Marked as WILL_FIX_LATER for the time being until a working implementation of the nvidia_wmi_ec interface is present on Lenovo Legion laptops, since the patch isn't a true fix as stated before