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[Bug 850885] Re: (oneiric) greeter screen displayed incorrectly with external monitor during login

 

Essentially, the problem is that during login the screen resolution is
resized but the screen isn't cleared; gnome-settings-daemon (or
*possibly the GPU) just fills the undefined space with snippets from the
framebuffer.

We could just insert a blank before beginning the login, and then
unblank after, however this would cause an undesirable flicker for
normal cases, where the screen resolution does not need to be changed.

Perhaps a better approach would be to alter gnome-settings-daemon such
that when it does a mode change during login, to either blank or scale
the existing framebuffer, rather than the ugly tiling.


** Also affects: gnome-control-center (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gnome-control-center (Ubuntu)
       Status: New => Triaged

** Changed in: gnome-control-center (Ubuntu)
   Importance: Undecided => High

** Also affects: ayatana-design
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/850885

Title:
  (oneiric) greeter screen displayed incorrectly with external monitor
  during login

Status in Ayatana Design:
  New
Status in Unity Greeter:
  New
Status in “gnome-control-center” package in Ubuntu:
  Triaged

Bug description:
  I am running up to date (as of 15 Sept) Oneirc beta on a laptop with
  an external monitor.  When booting with the monitor plugged in, I see
  the following:

  - what appears to be the default greeter/sign in screen displayed correctly for a second or two
  - a white flash
  - that same sign in screen re-displayed but this time it is only in the top 2/3 of the laptop screen, with the bottom third of that screen blank.

  It functions (i.e., I can log in), but looks shoddy.

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