screen display: the last pixel column (on the right) is displayed on the left

[Luc Pi]

on the screen the first column of pixels (on the left) is weird.

Actually it appears to be the most right column that's displayed there. The whole screen is displayed shifted on clomun to the right, and looping so the last column right is displayed on the left border.

If you move your cursor on the right edge, it appears (one pixel wide) on the left. Same thing if you move a window beyond the right eddge. For example a white window, you'll see a white column on the left. (it might be two pixels wide(?))

It does not appear on a screenshot.

It's on a Raspberry pi 400
- 20.10, had no problem. After upgrade the problem appeared.
- on a fresh 21.04 install, there's no problem either.
  It appears after a package update (apt upgrade) and reboots.

'linux-firmware-raspi2' is a raw guess.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: linux-firmware-raspi2 4-0ubuntu3
ProcVersionSignature: Ubuntu 5.11.0-1012.13-raspi 5.11.21
Uname: Linux 5.11.0-1012-raspi aarch64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: arm64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 18 21:49:55 2021
Dependencies:

ImageMediaBuild: 20201022
SourcePackage: linux-firmware-raspi2
UpgradeStatus: Upgraded to hirsute on 2021-06-16 (32 days ago)

[Jacob Rodgers (jr0026)]

I also have the issue on the Raspberry Pi 400. To add a bit more information, the issue persists when I change resolutions, and also occurs if I use a different monitor. I have not seen the issue on any other operating systems.

[Luc Pi (oluc)]

the bug disapeared some time ago (weeks?). Maybe after a package update. I can't say.

[Luc Pi (oluc)]

I close the report.

(Jacob, if it still happens for you, feel free to reopen.)