[amdgpu] Flickering/noise on screen started in kernel 5.13

[Jean Dejonghe]

After the kernel release 5.13.0-27-generic was installed today, the startup and shutdown processes finish with white noise screens.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.13.0-27.29~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
BootLog: Error: [Errno 13] Permission non accordée: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: KDE
Date: Wed Jan 19 16:17:35 2022
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164c] (rev c2) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:18b2]
InstallationDate: Installed on 2022-01-19 (0 days ago)
InstallationMedia: Kubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819.1)
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop TP420UA_TM420UA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-27-generic root=UUID=c4ec4ae8-c14c-4c0b-9922-9142270cef97 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/06/2021
dmi.bios.release: 5.19
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: TP420UA.302
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: TP420UA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 3.2
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrTP420UA.302:bd09/06/2021:br5.19:efr3.2:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopTP420UA_TM420UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTP420UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:sku:
dmi.product.family: VivoBook Flip
dmi.product.name: VivoBook_ASUSLaptop TP420UA_TM420UA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.105-3~20.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.3~20.04.5
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bartlomiej Szczygiel (bartekltg)]

The bug affected me too. First reboot after updating the kernel. HP Pavilion 15(AMD Ryzen 5 4600H + nvidia 1650ti), after a restart the output from Nvidia is replaced by noise: https://www.youtube.com/watch?v=GAbUaWYDVEQ
Under it the system works, I can blindly log, run a terminal and, for example, reboot the machine.
I can switch between amd and nvidia GPUs with prime-select nvidia/intel ("intel" seems to mean "integrated" there), the AMD GPU works well.
If I can be helpful and provide more information, please tell me how.

[Daniel van Vugt (vanvugt)]

See also bug 1958591 which is likely to be the same issue.

[Daniel van Vugt (vanvugt)]

Removed comment about the workaround because it is confusing people in duplicate bugs and probably not accurate.

[James Ferguson (jamesf)]

Please also note that while this bug is mostly cosmetic (?), the probably-related bug https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.13/+bug/1958591 is more critical and renders the display and therefore often the computer unusable.

[Daniel van Vugt (vanvugt)]

I agree this bug is not well described. It could do with better wording. But keeping bug 1958591 open separately is probably not helpful.

[Mariusz (mapniv)]

In my case the problem is severe. I can see login screen, but when I log in I see a white noise screen. It renders my computer unusable. That is unless I use older kernel.

There is how to do it: When your computer boots press escape (UEFI boot) or shift (BIOS boot). You may have to try several times to press it in right time. A menu should appear. Choose option 'Advanced options for Ubuntu'. Then choose 'Ubuntu, with Linux 5.11.0-46-generic'.

[Eberhard Altenpohl (ntvmuc)]

Me too (like Mariusz), I can boot with "Ubuntu, with Linux 5.11.0-46-generic" but not correctly with 5.13.0.27.

But - normaly, I work with a second screen, connected over HDMI. In this case, ubuntu 5.13.0.27 starts with a white noise screen on the machines screen, but normaly on the second screen. I can't explain this, but its always the same.

My last question is, how it is going on? Is there a kernel-update? Is it possible, to update an base of 5.11.0-46?

[Daniel van Vugt (vanvugt)]

Bug 1958591 seems to be more active and they are resisting being marked as a duplicate of this. So I'll take the unusual step of making this a duplicate of that newer bug.