[Bug 35697] System locks up when watching fullscreen flash video

bugzilla-daemon
2011-03-28T02:28:18Z

--- Comment #12 from Nikos Chantziaras <realnc@gmail.com> 2011-03-27 19:28:16 PDT ---
(In reply to comment #11)
> [...]
> If UnredirectFullscreen=false fixes the problem then it really sounds like it
> is bug 35452 and that xserver patch should help. Without that patch and
> unredirected rendering you should observe screen corruption in most other
> fullscreen apps as well, esp. when they switch out of fullscreen mode. At least
> Compiz is almost unuseable without that patch with unredirected fullscreen
> windows.

This isn't the case here. There's no screen corruption whatsoever without that
patch. The problem I'm having with Flash never results in actuall screen
corruption either. It's mostly a black screen, a system freeze or the screen
just "hangs" and only the mouse is able to move. I never observe any corruption
(which I understand to mean "random garbage" on the screen.)

> The frameskipping with redirected windows is probably because the compositor
> doesn't run at the same composition rate as the redraw rate of the app or the
> refresh rate of the monitor.

I've set MaxFPS=60 in kwinrc and my monitor runs at 60Hz. I guess KWin isn't
good in keeping things synced, that's why it skips frames.