Created attachment 303589 [details] dmesg Xiaomi Redmi Note 14 2022 notebook backlight brighness control does not work with /sys/class/backlight/acpi_video0 correctly initialized (but it worked on 5.19 kernel). Using KDE tools or manually setting /sys/class/backlight/acpi_video0/brightness does nothing. xrandr output brightness works fine. KUbuntu 22.04
lspci 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b5 (rev 01) 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 14b6 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b7 (rev 01) 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b7 (rev 01) 00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14ba 00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14ba 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b7 (rev 01) 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b7 (rev 01) 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14b7 (rev 01) 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14b9 (rev 10) 00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14b9 (rev 10) 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 71) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1679 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167a 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167b 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167c 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167d 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167e 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 167f 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1680 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b852 02:00.0 Non-Volatile memory controller: Phison Electronics Corporation Device 5019 (rev 01) 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt (rev 02) 03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1640 03:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] VanGogh PSP/CCP 03:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 161d 03:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 161e 03:00.5 Multimedia controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor (rev 60) 03:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller 03:00.7 Signal processing controller: Advanced Micro Devices, Inc. [AMD] Raven/Raven2/Renoir Sensor Fusion Hub 04:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 161f 04:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15d6 04:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15d7
TM2107-Redmi_Book_Pro_14_2022
Created attachment 303590 [details] lshw
Fixed removing kernel param acpi_osi=! (applied by patch earlier from modern-laptop github repository)