[Bug 1425690] Re: New windows are created offscreen

[Ubuntu QA Website]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1425690

** Tags added: iso-testing

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https://bugs.launchpad.net/bugs/1425690

Title:
  New windows are created offscreen

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  When running ubiquity-dm from Xubuntu's Beta1 Vivid image, any new
  windows created within it are positioned offscreen. This means that
  the final window informing you that your installation is finished
  doesn't show up for the user.

  As far as I have been able to debug this, some window-manager hints are set incorrectly by Xfwm4, it's not clear though as to why as all information I could gather from xrandr and xprop otherwise seemed fine. To be more concrete, this is the offending hint:
  _NET_WORKAREA(CARDINAL) = 1024, 28, 0, 740

  It should read like this instead:
  _NET_WORKAREA(CARDINAL) = 0, 28, 1024, 740

  I'm not sure what causes this offset, the ubiquity-panel seems to set
  its STRUTS ok and Xfwm4 seems to behave fine in the live session. I'll
  attach a few logs below.

  "xprop" (of a new instance of xfce4-terminal that was created offscreen)
  http://paste.ubuntu.com/10414211/

  "xprop -root" (in the offending ubiquity-dm session)
  http://paste.ubuntu.com/10414440/

  "/var/log/Xorg.0.log"
  http://paste.ubuntu.com/10413856/

  "xrandr"
  http://paste.ubuntu.com/10413911/

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