[Bug 1930945] [NEW] ubuntu desktop - changing display configuration lost wallpaper (trap messages filled dmesg)

[Chris Guiver]

Public bug reported:

Ubuntu Desktop Impish daily test.

Changing display positions in settings.  I have two monitors, one above
the other (so not the default).

I made change and it look okay so I said keep. I noticed I was wrong
having TOP/BOTTOM displays the wrong way, detected via mouse movements
between displays so I made another change of the TOP/BOTTOM displays in
"DISPLAYS" of GNOME settings...

** Expected Results

On changing display orientation I expect wallpaper to be redrawn, or
remain on screen

** Actual Results

I now have BLUE background on both displays.

/var/crash is empty... operation appears normal; I lost background.
lots of TRAP messages though fill `dmesg`

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: ubuntu-desktop 1.469
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu67
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.461
CurrentDesktop: ubuntu:GNOME
Date: Sat Jun  5 03:01:52 2021
LiveMediaBuild: Ubuntu 21.10 "Impish Indri" - Alpha amd64 (20210604)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-meta
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug impish

** Attachment added: "sudo dmesg >dmesg.txt"
   https://bugs.launchpad.net/bugs/1930945/+attachment/5502569/+files/dmesg.txt

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https://bugs.launchpad.net/bugs/1930945

Title:
  ubuntu desktop - changing display configuration lost wallpaper (trap
  messages filled dmesg)

Status in ubuntu-meta package in Ubuntu:
  New

Bug description:
  Ubuntu Desktop Impish daily test.

  Changing display positions in settings.  I have two monitors, one
  above the other (so not the default).

  I made change and it look okay so I said keep. I noticed I was wrong
  having TOP/BOTTOM displays the wrong way, detected via mouse movements
  between displays so I made another change of the TOP/BOTTOM displays
  in "DISPLAYS" of GNOME settings...

  ** Expected Results

  On changing display orientation I expect wallpaper to be redrawn, or
  remain on screen

  ** Actual Results

  I now have BLUE background on both displays.

  /var/crash is empty... operation appears normal; I lost background.
  lots of TRAP messages though fill `dmesg`

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: ubuntu-desktop 1.469
  ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
  Uname: Linux 5.11.0-16-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu67
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.461
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jun  5 03:01:52 2021
  LiveMediaBuild: Ubuntu 21.10 "Impish Indri" - Alpha amd64 (20210604)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-meta
  UpgradeStatus: No upgrade log present (probably fresh install)

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