Public bug reported:
Using gnome-shell - activities - see attached video
Graphics flash - more prominent with more than one app running.
If you install ubuntu-budgie-desktop and simply move through the menu
categories the flashing is even more prominent.
I'm guessing this is xorg related - but I do note the recent mesa uplift
has made things worse
ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xorg 1:7.7+19ubuntu15
ProcVersionSignature: Ubuntu 5.8.0-1011.14+21.04.1-raspi 5.8.18
Uname: Linux 5.8.0-1011-raspi aarch64
ApportVersion: 2.20.11-0ubuntu55
Architecture: arm64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 11 16:49:14 2021
DistUpgraded: Fresh install
DistroCodename: hirsute
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
ImageMediaBuild: 20201225
Lspci-vt: -[0000:00]---00.0-[01]----00.0 VIA Technologies, Inc. VL805 USB 3.0
Host Controller
ProcKernelCmdLine: coherent_pool=1M 8250.nr_uarts=0
snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1
snd_bcm2835.enable_headphones=1 video=HDMI-A-1:640x480M@60
smsc95xx.macaddr=DC:A6:32:D1:3E:28 vc_mem.mem_base=0x3ec00000
vc_mem.mem_size=0x40000000 dwc_otg.lpm_enable=0 console=tty1
root=LABEL=writable rootfstype=ext4 elevator=deadline rootwait fixrtc quiet
splash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
acpidump:
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.103-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.3.2-1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 hirsute reproducible single-occurrence ubuntu
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1911030
Title:
graphical flashes on a raspi 4
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1911030/+subscriptions
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