canonical-ubuntu-qa team mailing list archive

[Chris Guiver <2013074@xxxxxxxxxxxxxxxxxx>]

I just experienced this with Lubuntu noble daily on

- hp prodesk 400 g1 sff (i5-4570, 8gb, amd/ati cedar radeon hd
5000/6000/7350/8350)

** Tags added: noble

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Title:
  changing monitor configuration & on next login, only one monitor is
  fully usable to LXQt

Status in openbox package in Ubuntu:
  Confirmed

Bug description:
  Lubuntu lunar daily QA-test (live) on
  - hp prodesk 400 g1 sff (i5-4570, 8gb, amd/ati cedar radeon hd 5000/6000/7350/8350)

  this issue is NOT unique to Lubuntu; I've been experiencing it a lot
  on Debian lately; which is why I looked for it here (tonight) on this
  LIVE QA-test..

  I also experience it on occasion on my primary box; just logout &
  login again usually resolves it there (in Debian too).

  To avoid the issue; replace OPENBOX with XFWM4 or another & it won't
  occur, thus the filing against openbox.

  ** To re-create

  - adjust monitors (how they are positioned to each other)
  - logout
  - login

  ** additional notes

  - the logout/login may require a numerous attempts times to occur
  - if it doesn't occur in 3-4 logout/login loops; adjust monitor alignment again & try again.
  - it's occurred with monitors left+right aligned, top-bottom aligned & other combinations too YET i have had alignments where I DO NOT EXPERIENCE the issue too..
  - occurs on boxes where I have 2, or 3 monitors attached
  - this has occurred on installed systems (Debian bookworm & lunar), filed when I experienced it on LIVE lunar QA-test
  - this bug is EASIER TO REPLICATE when one screen is vertically above another.. most users have side-by-side arrangements so likely won't be impacting many users

  ** Expected result

  - on login, all are both usable, have wallpaper (half/third of wallpaper on each)
  - right click on background pulls up menu

  ** Actual result

  here it's inconsistent... Much of the time the result is Expected
  result

  BUT

  logout/login a few times & depending on how monitors are positioned
  you may get

  - one monitor (or more) has the expected wallpaper but one is drawn without wallpaper & you're experiencing this issue.
  - the monitor with wallpaper will operate normally & can hold windows
  - one (or more) monitor will have no wallpaper & thus right-click on background will do nothing
  - you cannot drag/drop windows from monitor with wallpaper to monitor that is black
  - mouse (pointer) moves over black monitor as expected (ie. monitor exists & will take mouse-pointer normally, but windows won't draw on it if dragged to that window... if windows are dropped here they'll be inaccessible.. but if held & dragged across the black monitor & the drag continues to the wallpaper drawn monitor you can drop & use windows normally
  - if panel is on black monitor (with only mouse-pointer being drawn on it) then panel+menu cannot be seen on that monitor/used, but it appears to be working; is just unseen (as are probably windows dropped there).

  ProblemType: Bug
  DistroRelease: Ubuntu 23.04
  Package: openbox 3.6.1-10ubuntu1
  ProcVersionSignature: Ubuntu 6.2.0-18.18-generic 6.2.6
  Uname: Linux 6.2.0-18-generic x86_64
  ApportVersion: 2.26.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CasperVersion: 1.480
  CurrentDesktop: LXQt
  Date: Tue Mar 28 12:22:27 2023
  LiveMediaBuild: Lubuntu 23.04 "Lunar Lobster" - Alpha amd64 (20230325)
  SourcePackage: openbox
  UpgradeStatus: No upgrade log present (probably fresh install)

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