With Radeon R9 Fury X and 2 4k displays @60hz, one LG TV@HDMI, one iiyama@DP => everything fine With new Radeon 5700 from Asus => black screen after grub menu and after some time the gpu-fans spin up a bit and the mainboard debug LED starts flashing. Then reset-button is the only option. With new Radeon 5700 XT from Gigabyte => same So I can already rule out a hardware fault. What helps: - Starting a recovery boot entry in grub - OR disconecting one display before reboot Both 5700 cards work always fine with only one display connected. If I connect the second display later, when I am already on desktop environment - also everything works. Other things I tried - changing to 30 hz then reboot - kernels from 5.4 onwards - different ports on the gpu - DP to HDMI-adapter sudo dmesg | grep amdgpu [sudo] Passwort für tom: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64 root=UUID=74886ca0-4a71-4692-aa0c-b2a539ec6b48 rw quiet loglevel=3 rd.systemd.show_status=auto rd.udev.log_priority=3 amdgpu.ppfeaturemask=0xfffd7fff resume=LABEL=swap libahci.ignore_sss=1 [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.7-x86_64 root=UUID=74886ca0-4a71-4692-aa0c-b2a539ec6b48 rw quiet loglevel=3 rd.systemd.show_status=auto rd.udev.log_priority=3 amdgpu.ppfeaturemask=0xfffd7fff resume=LABEL=swap libahci.ignore_sss=1 [ 2.597324] [drm] amdgpu kernel modesetting enabled. [ 2.597526] fb0: switching to amdgpudrmfb from EFI VGA [ 2.597631] amdgpu 0000:0d:00.0: vgaarb: deactivate vga console [ 2.597664] amdgpu 0000:0d:00.0: enabling device (0006 -> 0007) [ 2.615476] amdgpu 0000:0d:00.0: VRAM: 8176M 0x0000008000000000 - 0x00000081FEFFFFFF (8176M used) [ 2.615477] amdgpu 0000:0d:00.0: GART: 512M 0x0000000000000000 - 0x000000001FFFFFFF [ 2.615580] [drm] amdgpu: 8176M of VRAM memory ready [ 2.615583] [drm] amdgpu: 8176M of GTT memory ready. [ 3.433349] amdgpu 0000:0d:00.0: RAS: optional ras ta ucode is not available [ 3.528083] snd_hda_intel 0000:0d:00.1: bound 0000:0d:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu]) [ 3.628396] fbcon: amdgpudrmfb (fb0) is primary device [ 3.739398] amdgpu 0000:0d:00.0: fb0: amdgpudrmfb frame buffer device [ 3.783482] amdgpu 0000:0d:00.0: ring gfx_0.0.0 uses VM inv eng 0 on hub 0 [ 3.783485] amdgpu 0000:0d:00.0: ring comp_1.0.0 uses VM inv eng 1 on hub 0 [ 3.783487] amdgpu 0000:0d:00.0: ring comp_1.1.0 uses VM inv eng 4 on hub 0 [ 3.783489] amdgpu 0000:0d:00.0: ring comp_1.2.0 uses VM inv eng 5 on hub 0 [ 3.783491] amdgpu 0000:0d:00.0: ring comp_1.3.0 uses VM inv eng 6 on hub 0 [ 3.783492] amdgpu 0000:0d:00.0: ring comp_1.0.1 uses VM inv eng 7 on hub 0 [ 3.783494] amdgpu 0000:0d:00.0: ring comp_1.1.1 uses VM inv eng 8 on hub 0 [ 3.783496] amdgpu 0000:0d:00.0: ring comp_1.2.1 uses VM inv eng 9 on hub 0 [ 3.783498] amdgpu 0000:0d:00.0: ring comp_1.3.1 uses VM inv eng 10 on hub 0 [ 3.783499] amdgpu 0000:0d:00.0: ring kiq_2.1.0 uses VM inv eng 11 on hub 0 [ 3.783501] amdgpu 0000:0d:00.0: ring sdma0 uses VM inv eng 12 on hub 0 [ 3.783503] amdgpu 0000:0d:00.0: ring sdma1 uses VM inv eng 13 on hub 0 [ 3.783505] amdgpu 0000:0d:00.0: ring vcn_dec uses VM inv eng 0 on hub 1 [ 3.783506] amdgpu 0000:0d:00.0: ring vcn_enc0 uses VM inv eng 1 on hub 1 [ 3.783508] amdgpu 0000:0d:00.0: ring vcn_enc1 uses VM inv eng 4 on hub 1 [ 3.783510] amdgpu 0000:0d:00.0: ring jpeg_dec uses VM inv eng 5 on hub 1 [ 3.784426] [drm] Initialized amdgpu 3.37.0 20150101 for 0000:0d:00.0 on minor 0 [ 2050.217010] amdgpu 0000:0d:00.0: RAS: optional ras ta ucode is not available [ 2050.416499] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data [ 2050.925049] [drm:retrieve_link_cap [amdgpu]] *ERROR* retrieve_link_cap: Read dpcd data failed. [ 2050.934845] amdgpu 0000:0d:00.0: ring gfx_0.0.0 uses VM inv eng 0 on hub 0 [ 2050.934846] amdgpu 0000:0d:00.0: ring comp_1.0.0 uses VM inv eng 1 on hub 0 [ 2050.934846] amdgpu 0000:0d:00.0: ring comp_1.1.0 uses VM inv eng 4 on hub 0 [ 2050.934847] amdgpu 0000:0d:00.0: ring comp_1.2.0 uses VM inv eng 5 on hub 0 [ 2050.934847] amdgpu 0000:0d:00.0: ring comp_1.3.0 uses VM inv eng 6 on hub 0 [ 2050.934848] amdgpu 0000:0d:00.0: ring comp_1.0.1 uses VM inv eng 7 on hub 0 [ 2050.934849] amdgpu 0000:0d:00.0: ring comp_1.1.1 uses VM inv eng 8 on hub 0 [ 2050.934849] amdgpu 0000:0d:00.0: ring comp_1.2.1 uses VM inv eng 9 on hub 0 [ 2050.934850] amdgpu 0000:0d:00.0: ring comp_1.3.1 uses VM inv eng 10 on hub 0 [ 2050.934850] amdgpu 0000:0d:00.0: ring kiq_2.1.0 uses VM inv eng 11 on hub 0 [ 2050.934851] amdgpu 0000:0d:00.0: ring sdma0 uses VM inv eng 12 on hub 0 [ 2050.934851] amdgpu 0000:0d:00.0: ring sdma1 uses VM inv eng 13 on hub 0 [ 2050.934852] amdgpu 0000:0d:00.0: ring vcn_dec uses VM inv eng 0 on hub 1 [ 2050.934852] amdgpu 0000:0d:00.0: ring vcn_enc0 uses VM inv eng 1 on hub 1 [ 2050.934853] amdgpu 0000:0d:00.0: ring vcn_enc1 uses VM inv eng 4 on hub 1 [ 2050.934853] amdgpu 0000:0d:00.0: ring jpeg_dec uses VM inv eng 5 on hub 1 lspci -v 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Root Complex Subsystem: ASRock Incorporation Device 1450 Flags: fast devsel 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 25 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: fcf00000-fcffffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 26 Bus: primary=00, secondary=02, subordinate=0a, sec-latency=0 I/O behind bridge: 0000f000-0000ffff [size=4K] Memory behind bridge: fcc00000-fcdfffff [size=2M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe GPP Bridge (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 27 Bus: primary=00, secondary=0b, subordinate=0d, sec-latency=0 I/O behind bridge: 0000e000-0000efff [size=4K] Memory behind bridge: fca00000-fcbfffff [size=2M] Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff [size=258M] Capabilities: <access denied> Kernel driver in use: pcieport 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 28 Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: fc700000-fc9fffff [size=3M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge Flags: fast devsel 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Internal PCIe GPP Bridge 0 to Bus B (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 30 Bus: primary=00, secondary=0f, subordinate=0f, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: fce00000-fcefffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 59) Subsystem: ASRock Incorporation Device 790b Flags: 66MHz, medium devsel Kernel driver in use: piix4_smbus Kernel modules: i2c_piix4, sp5100_tco 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) Subsystem: ASRock Incorporation Device 790e Flags: bus master, 66MHz, medium devsel, latency 0 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 0 Flags: fast devsel 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 1 Flags: fast devsel 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 2 Flags: fast devsel 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 3 Flags: fast devsel Kernel driver in use: k10temp Kernel modules: k10temp 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 4 Flags: fast devsel 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 5 Flags: fast devsel 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 6 Flags: fast devsel 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Data Fabric: Device 18h; Function 7 Flags: fast devsel 01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 (prog-if 02 [NVM Express]) Subsystem: Samsung Electronics Co Ltd Device a801 Flags: bus master, fast devsel, latency 0, IRQ 45, NUMA node 0 Memory at fcf00000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: nvme 02:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43d0 (rev 01) (prog-if 30 [XHCI]) Subsystem: ASRock Incorporation Device 43d0 Flags: bus master, fast devsel, latency 0, IRQ 29 Memory at fcda0000 (64-bit, non-prefetchable) [size=32K] Capabilities: <access denied> Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset SATA Controller (rev 01) (prog-if 01 [AHCI 1.0]) Subsystem: ASRock Incorporation Device 43c8 Flags: bus master, fast devsel, latency 0, IRQ 47 Memory at fcd80000 (32-bit, non-prefetchable) [size=128K] Expansion ROM at fcd00000 [disabled] [size=512K] Capabilities: <access denied> Kernel driver in use: ahci 02:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Bridge (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 32 Bus: primary=02, secondary=03, subordinate=0a, sec-latency=0 I/O behind bridge: 0000f000-0000ffff [size=4K] Memory behind bridge: fcc00000-fccfffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 33 Bus: primary=03, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 35 Bus: primary=03, secondary=05, subordinate=05, sec-latency=0 I/O behind bridge: 0000f000-0000ffff [size=4K] Memory behind bridge: fcc00000-fccfffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 36 Bus: primary=03, secondary=06, subordinate=06, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:03.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 38 Bus: primary=03, secondary=07, subordinate=07, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 39 Bus: primary=03, secondary=08, subordinate=08, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 40 Bus: primary=03, secondary=09, subordinate=09, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 03:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 41 Bus: primary=03, secondary=0a, subordinate=0a, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: [disabled] Prefetchable memory behind bridge: [disabled] Capabilities: <access denied> Kernel driver in use: pcieport 05:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03) Subsystem: ASRock Incorporation Device 1539 Flags: bus master, fast devsel, latency 0, IRQ 34 Memory at fcc00000 (32-bit, non-prefetchable) [size=128K] I/O ports at f000 [size=32] Memory at fcc20000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: igb Kernel modules: igb 0b:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch (rev c1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at fcb00000 (32-bit, non-prefetchable) [size=16K] Bus: primary=0b, secondary=0c, subordinate=0d, sec-latency=0 I/O behind bridge: 0000e000-0000efff [size=4K] Memory behind bridge: fca00000-fcafffff [size=1M] Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff [size=258M] Capabilities: <access denied> Kernel driver in use: pcieport 0c:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 44 Bus: primary=0c, secondary=0d, subordinate=0d, sec-latency=0 I/O behind bridge: 0000e000-0000efff [size=4K] Memory behind bridge: fca00000-fcafffff [size=1M] Prefetchable memory behind bridge: 00000000e0000000-00000000f01fffff [size=258M] Capabilities: <access denied> Kernel driver in use: pcieport 0d:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] (rev c1) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd Device 2316 Flags: bus master, fast devsel, latency 0, IRQ 111 Memory at e0000000 (64-bit, prefetchable) [size=256M] Memory at f0000000 (64-bit, prefetchable) [size=2M] I/O ports at e000 [size=256] Memory at fca00000 (32-bit, non-prefetchable) [size=512K] Expansion ROM at fca80000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: amdgpu Kernel modules: amdgpu 0d:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio Flags: bus master, fast devsel, latency 0, IRQ 110 Memory at fcaa0000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 0e:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function Subsystem: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function Flags: fast devsel Capabilities: <access denied> 0e:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor Subsystem: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) Platform Security Processor Flags: bus master, fast devsel, latency 0, IRQ 99 Memory at fc800000 (32-bit, non-prefetchable) [size=1M] Memory at fc900000 (32-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: ccp Kernel modules: ccp 0e:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Zeppelin USB 3.0 Host controller (prog-if 30 [XHCI]) Subsystem: ASRock Incorporation Device 7914 Flags: bus master, fast devsel, latency 0, IRQ 90 Memory at fc700000 (64-bit, non-prefetchable) [size=1M] Capabilities: <access denied> Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 0f:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function Subsystem: Advanced Micro Devices, Inc. [AMD] Zeppelin/Renoir PCIe Dummy Function Flags: fast devsel Capabilities: <access denied> 0f:00.2 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) (prog-if 01 [AHCI 1.0]) Subsystem: ASRock Incorporation Device 7901 Flags: bus master, fast devsel, latency 0, IRQ 49 Memory at fce08000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: ahci 0f:00.3 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) HD Audio Controller Subsystem: ASRock Incorporation Device 2220 Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at fce00000 (32-bit, non-prefetchable) [size=32K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel
Please attach your full dmesg output and xorg log (if using X).
Created attachment 290305 [details] dmesg just after plugging in second display
Created attachment 290307 [details] xorg.log just after connecting second display
Maybe it has something to do with my X470 Board not being PCI-E 4.0? I switched to a better PSU today, but that did not help either. Both screens completely black until I pull one cable and reboot.
Created attachment 290817 [details] reproducable error messages after suspend, then reboot This error message is reproducable if I boot - with 1 display - on KDE connect second display - suspend, then wakeup (both screens work normal until this point) - then reboot => error message, then black screen on one and green screen on secondary display. Because my Mainboard got a new Bios I tried that with no effect. But I realized, that I get the black screen only if I dial in the 3200 Mhz XMP Profile of my RAM. If not - there is no black screen with 2 displays on the new BIOS. On the old BIOS XMP Profile or not made no difference. Thus the mainboard may be part of the problem.
(In reply to Thomas Langkamp from comment #5) > Created attachment 290817 [details] > reproducable error messages after suspend, then reboot > > This error message is reproducable if I boot > - with 1 display > - on KDE connect second display > - suspend, then wakeup (both screens work normal until this point) > - then reboot => error message, then black screen on one and green screen on > secondary display. > > Because my Mainboard got a new Bios I tried that with no effect. But I > realized, that I get the black screen only if I dial in the 3200 Mhz XMP > Profile of my RAM. If not - there is no black screen with 2 displays on the > new BIOS. On the old BIOS XMP Profile or not made no difference. Thus the > mainboard may be part of the problem. Still, Mainboard being part of the problem or not - all was fine til I switched the Fury X to the 5700 XT (first an ASROCK, now a Gigabyte one).
I found a similar bug here: https://bugzilla.kernel.org/show_bug.cgi?id=206903#c51
Do you only get the MCE errors when you set the XMP profile?
Created attachment 290821 [details] signature.asc Yes. With the new BIOS this is reproducible only with XMP enabled. In the other bugreport I read about amdgpu.ppfeaturemask=0xffffbffd I just tried it. Until now this seems to fix it, even with XMP profile enabled! I will report back if I get a black screen again. As far as I know with 2 monitors attached the VRAM is always clocked high, so it makes sense that disabling the VRAM power management through this featuremask works around the issue. But surely a proper fix would be appreciated. Am 10.08.20 um 16:33 schrieb bugzilla-daemon@bugzilla.kernel.org: > https://bugzilla.kernel.org/show_bug.cgi?id=208573 > > --- Comment #8 from Alex Deucher (alexdeucher@gmail.com) --- > Do you only get the MCE errors when you set the XMP profile? >
You can probably mark this bug as a duplicate of 208573 then.
206903 *** This bug has been marked as a duplicate of bug 206903 ***
This bug is gone! I think since 5.8.1 or so. I waited a couple of weeks to see if it comes back, but I can now boot, suspend and whatever with both screens connected. Cheers :D
And here we go, the bug is back in 5.12.5 or so (probably also in earlier 5.12 kernels). In my case this occurs with 4 virtual and 2 physical screens connected (dual 5k MST) and a Radeon Pro W5700. The issue this was deduplicated against has lots of extra investigation.
Can you bisect? https://www.kernel.org/doc/html/latest/admin-guide/bug-bisect.html