GNOME Bugzilla – Bug 316181
bad redrawing when switching desktops
Last modified: 2020-11-06 20:05:24 UTC
When switching desktops, it can happen that the windows from the old desktop are above the ones on the new desktop for a short time. This results in multiple exposes for applications on the new desktop and slows down the redrawing.
iirc right now the order of maps/unmaps would be effectively random (all just happening in an idle handler) maybe the idle could sort windows to unmap ahead of windows to map, and unmap first. while we're at it, we could unmap bottom-to-top and map from top-to-bottom.
Thanks for the bug report. This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find. *** This bug has been marked as a duplicate of 86590 ***
Reopening (yeah, it has been ages since I first reported it). This is bug #86590 I think. The problem here is with the order of maps/unmaps, and that windows are redrawn before all the changes happened. I have just come across this again with the metacity compositor enabled. For example when I switch to another workspace now, I get this (epiphany) window, to be underneath a terminal for a short time. The terminal is first composited on top of this window, and only then it disappears. I would expect that I see the new desktop (without any windows from the old one) after a short delay.
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