See also bug 1958591 which is likely to be the same issue.
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https://bugs.launchpad.net/bugs/1958412
Title:
[amdgpu] at startup and shutdown screen gets white noise
Status in linux-hwe-5.13 package in Ubuntu:
Confirmed
Bug description:
After the kernel release 5.13.0-27-generic was installed today, the startup
and shutdown processes finish with white noise screens.
The workaround at startup is to disable "quiet" in /etc/default/grub,
variable GRUB_CMDLINE_LINUX_DEFAULT. (GRUB_CMDLINE_LINUX_DEFAULT="splash"
works, GRUB_CMDLINE_LINUX_DEFAULT=" quiet splash" doesn't).
No workaround found for shutdown until now. Can you help me find one ?
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
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