Switching applications back from fullscreen may trigger screen corruption or flickering
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| cinnamon (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
If applications like most games switch back from fullscreen to the cinnamon desktop, there is some chance that the screen corrupts.
The display aggresively flickers on any update then (menu fading, window movement), revealing corrupted screens that contains of sometimes an old desktop state, white, and blue surfaces.
Happens for me on Ubuntu 12.04 on multiple systems. Occurs on intel sandybridge as well as nvidia with proprietary binary drivers. Candidate applications are wine games, but also fullscreen playback of VLC and something. Maybe every application that go windowless fullscreen (eg. SDL) may trigger this.
This bug also applies to the gnome-shell, where it can be stopped by resetting gnome shell (Alt F2, r, enter).
This bug does not trigger on Ubuntu 12.04 gnome fallback, unity and lxde.
An older report of the same effect on the gnome-shell is here: https:/
May impose a light security risk, if old screen content is revealed while flickering, eg. in screen lock mode.
