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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Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/850885
Title:
(oneiric) greeter screen displayed incorrectly with external monitor
during login
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https://bugs.launchpad.net/ayatana-design/+bug/850885/+subscriptions
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