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[Bug 1126221] Re: Switching from multiple to one screen causes windows to go missing

 

I see the same problem on Trusty 14.04.1 LTS.
I have a VGA monitor on the left, and an HDMI monitor on the right, and a laptop screen that is turned off since I can't seem to run 3 displays at once.  The HDMI goes to sleep after 2 hours of inactivity.

It doesn't happen every time, but after several of these sleep cycles, a
window like psensor or Totem  will often disappear as described.

xrandr snippets:

Screen 0: minimum 320 x 200, current 3600 x 1108, maximum 32767 x 32767
LVDS1 connected (normal left inverted right x axis y axis)
VGA1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 520mm x 290mm
HDMI1 connected 1680x1050+1920+58 (normal left inverted right x axis y axis) 1060mm x 626mm


** Changed in: unity (Ubuntu)
       Status: Invalid => Confirmed

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https://bugs.launchpad.net/bugs/1126221

Title:
  Switching from multiple to one screen causes windows to go missing

Status in Unity:
  Invalid
Status in unity package in Ubuntu:
  Confirmed

Bug description:
  For this you need a machine with multiple displays.

  Setup your desktop with a single workspace (the now default of 13.04?)
  Enable multiple monitors, side by side.
  Open a window on one monitor (such as nautilus) and another on the other monitor
  Use the display control panel to switch off one of the monitors.

  Observe that one of the windows is now lost offscreen. It appears in
  the alt-tab list, but you can't make it appear on screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: unity 6.12.0daily13.02.14-0ubuntu1 [origin: LP-PPA-ubuntu-unity-daily-build]
  ProcVersionSignature: Ubuntu 3.8.0-6.13-generic 3.8.0-rc7
  Uname: Linux 3.8.0-6-generic x86_64
  ApportVersion: 2.8-0ubuntu4
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,grid,imgpng,gnomecompat,scale,workarounds,mousepoll,regex,wall,move,place,vpswitch,resize,unitymtgrabhandles,snap,session,expo,ezoom,unityshell]
  CrashDB: unity
  Date: Fri Feb 15 13:16:40 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-06-29 (230 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  SourcePackage: unity
  UpgradeStatus: Upgraded to raring on 2013-01-18 (27 days ago)

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