[nvidia] KDE screen becomes fuzzy

Bug #1970458 reported by Brian Hechinger
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
kwin (Ubuntu)
Incomplete
Undecided
Unassigned
nvidia-graphics-drivers-510 (Ubuntu)
Incomplete
Undecided
Unassigned
plasma-desktop (Ubuntu)
Incomplete
Undecided
Unassigned

Bug Description

I have a fresh install of Ubuntu Studio 22.04. Proprietary nvidia drivers 510.60.02. The screen will sometimes get fuzzy. It's not constant and doing things like typing or moving the mouse will cause it to become un-fuzzy briefly.

Logging out of my X session and logging back in fixes it.

The two times I've noticed it happening the triggers appear to be either exiting a game or after the screen/screensaver has been on a long time (over night).

After the screen had been locked for a while I unlocked and things were fuzzy. On a whim I decided to start a game to see what would happen with the fuzziness. As soon as I launched the game the fuzziness went away.

It's heavily modded BattleTech which sometimes needs killing. I killed it and the fuzziness came back immediately. Restarted the game and fuzziness is gone again.

I'm actually able to screenshot it, which is interesting, so I've attached that to the ticket.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xserver-xorg-video-nvidia-510 510.60.02-0ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-24.24-lowlatency 5.15.30
Uname: Linux 5.15.0-24-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Tue Apr 26 18:16:07 2022
InstallationDate: Installed on 2022-04-20 (6 days ago)
InstallationMedia: Ubuntu-Studio 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1)
SourcePackage: nvidia-graphics-drivers-510
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Brian Hechinger (bhechinger) wrote :
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thanks for the bug report.

Please run:

  xrandr --verbose > xrandr.txt
  lspci -k > lspci.txt
  journalctl -b0 > journal.txt

and attach the resulting text files here.

Changed in nvidia-graphics-drivers-510 (Ubuntu):
status: New → Incomplete
tags: added: nvidia
summary: - Screen becomes fuzzy
+ [nvidia] Screen becomes fuzzy
Changed in xorg-server (Ubuntu):
status: New → Incomplete
no longer affects: mutter (Ubuntu)
Revision history for this message
Brian Hechinger (bhechinger) wrote : Re: [nvidia] Screen becomes fuzzy
Revision history for this message
Brian Hechinger (bhechinger) wrote :
Revision history for this message
Brian Hechinger (bhechinger) wrote :
Revision history for this message
Brian Hechinger (bhechinger) wrote :

Files attached. Thank you!

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Would you be able to run this command again _while_ it is fuzzy?

  xrandr --verbose > xrandrfuzzy.txt

And attach the resulting text file here.

Changed in nvidia-graphics-drivers-510 (Ubuntu):
status: Incomplete → New
Changed in xorg-server (Ubuntu):
status: Incomplete → New
Revision history for this message
Brian Hechinger (bhechinger) wrote :
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thanks. I don't see a simple Xorg explanation there, so the bug feels like a KDE compositor texturing problem.

no longer affects: xorg-server (Ubuntu)
summary: - [nvidia] Screen becomes fuzzy
+ [nvidia] KDE screen becomes fuzzy
Revision history for this message
Brian Hechinger (bhechinger) wrote :

Thanks for looking into this!

Hopefully we can figure out what's causing it. It's easy to workaround but highly annoying.

Revision history for this message
Brian Hechinger (bhechinger) wrote :

Just looking for a status update of this issue as it's been two weeks now.

Thanks.

-brian

Revision history for this message
Brian Hechinger (bhechinger) wrote :

A bit of an update on this. On a whim I disabled the compositor. The issue has gone away with the compositor disabled.

Revision history for this message
Scarlett Gately Moore (scarlettmoore) wrote :
Changed in kwin (Ubuntu):
status: New → Incomplete
Changed in nvidia-graphics-drivers-510 (Ubuntu):
status: New → Incomplete
Changed in plasma-desktop (Ubuntu):
status: New → Incomplete
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