This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1909942
Title:
Flickering screen after waking up from Standby (Suspend)
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since I switched to a new screen (ASUS VG249Q1R) with higher refesh
rate and AMD FreeSync I notice massive flickering and tearing after
waking up from standby - but only when FreeSync is activated. The
flickering starts to occur on the login interface but continues after
logging in and also during full-screen applications like games.
The flickering is resolved in the short run by switching the refresh
rate to 60hz (via KDE display settings) and back to the favored higher
refresh rate. Alternatively I can turn FreeSync off. When I turn it
back on, the flickering recurs after waking up from standby again.
As this problem occured to other people after upgrading to Ubuntu
20.04 I assume it is not a hardware problem. The bug seems identical
to these reports:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874588
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
amdgpu/+bug/1885363
My system has the following specifications:
CPU: AMD Ryzen 5 3600
GPU: XFX Radeon RX 5600 XT Thicc II Pro
OS: Kubuntu 20.04.1 LTS
Kernel: 5.4.0-58-generic
DE: KDE Plasma 5.18.5
Screen: ASUS VG249Q1R, FHD, 165Hz, FreeSync, …
I hope for a solution inside Ubuntu 20.04.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-58-generic 5.4.0-58.64
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: usery 1543 F.... pulseaudio
/dev/snd/pcmC1D0p: usery 1543 F...m pulseaudio
/dev/snd/controlC0: usery 1543 F.... pulseaudio
/dev/snd/timer: usery 1543 f.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sun Jan 3 23:03:41 2021
InstallationDate: Installed on 2020-04-29 (249 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Gigabyte Technology Co., Ltd. X570 I AORUS PRO WIFI
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-58-generic
root=/dev/mapper/vgkubuntu-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-58-generic N/A
linux-backports-modules-5.4.0-58-generic N/A
linux-firmware 1.187.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/06/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F12e
dmi.board.asset.tag: Default string
dmi.board.name: X570 I AORUS PRO WIFI
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF12e:bd03/06/2020:svnGigabyteTechnologyCo.,Ltd.:pnX570IAORUSPROWIFI:pvr-CF:rvnGigabyteTechnologyCo.,Ltd.:rnX570IAORUSPROWIFI:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: X570 I AORUS PRO WIFI
dmi.product.sku: Default string
dmi.product.version: -CF
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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