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[Bug 303697] Re: [RV730XT] [fglrx] video tearing / vsync problems - independent of compiz use

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: psarhjinian <dfavro@xxxxxxxxx>
Date: Sat, 24 Oct 2009 05:31:40 -0000
Reply-to: Bug 303697 <303697@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Still happens with Karmic (updated to 20091023), with Totem set to use
Xv and fglrx 2:8.660-0ubuntu4 driving a Radeon HD4770.  No modifications
to xorg.conf.  Tests with fullscreen video

Without Compiz
In Totem, normal X output doesn't tear (or if it does, it's subtle) but does more than double CPU usage.  Using OpenGL in VLC doesn't tear, uses less CPU (but not as little as Xv).  Xv tears with a progressive tear line proceeding distractingly down the screen

With Compiz (and with sync to vblank and refresh set to match amdcc)
In Totem, normal X and Xv tear in a progressive manner, with the tear line progressing down the screen a bit more haphazardly than without Compiz.  VLC with GL tears, but in an odd, flickery fashion.  CPU is slightly higher (10%) across the board.

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[RV730XT] [fglrx] video tearing / vsync problems - independent of compiz use
https://bugs.launchpad.net/bugs/303697
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