Rui Matos c3bf4a325d Refresh all background instances after suspend if needed
NVIDIA drivers don't preserve FBO contents across suspend / resume
cycles which results in broken backgrounds. We can work around that by
forcing a refresh when coming out of suspend.

https://bugzilla.gnome.org/show_bug.cgi?id=739178
2015-03-24 11:45:04 +01:00
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