Flickering and a lack of smoothness are two different issues. The lack
of smoothness would just be due to your GPU staying at a lower frequency
more often, so it's not a bug but something you would need to tune
yourself.
As for the flickering, please edit /etc/default/grub and change:
Public bug reported:
While or related to installation of Showfoto application.
ProblemType: Package
DistroRelease: Ubuntu 21.04
Package: libmfx1:amd64 21.1.0-1
ProcVersionSignature: Ubuntu 5.11.0-37.41-generic 5.11.22
Uname: Linux 5.11.0-37-generic x86_64
NonfreeKernelModules: nvidia_modeset
To be fair, "your system is too slow" really means the architecture of
Mutter (used in gnome-shell) is too slow. Not the hardware.
This problem is being improved in newer versions of Mutter using some
threading, but generally it's not an issue anyone should be concerned
about.
** Changed in:
Thank you for taking the time to report this bug and helping to make
Ubuntu better.
Bug reporting is mostly about finding & fixing problems thus preventing
future users from hitting the same bug.
I suspect a Support site would be more appropriate, eg.
https://answers.launchpad.net/ubuntu. You
Public bug reported:
I tried setting nomodeset, it allowed me to boot but i am not able to
control brightness and other stuff.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-37.41~20.04.2-generic 5.11.22
Uname: Linux
Public bug reported:
after installing cpufreq the screen flickring and smoothness disappeared
in ubuntu .
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-38.42~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-38-generic x86_64
** Package changed: linux (Ubuntu) => xserver-xorg-video-ati (Ubuntu)
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-ati in Ubuntu.
https://bugs.launchpad.net/bugs/1944991
Title:
Resume on glamor cause GPU lockup/screen
You have been subscribed to a public bug:
GPU: ATI Radeon 3100 Graphics (ChipID = 0x9611) (RS780)
GPU Lockup message in dmesg output after resume:
[ 916.000550] radeon :01:05.0: ring 0 stalled for more than 10084msec
[ 916.000569] radeon :01:05.0: GPU lockup (current fence id
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