Comment 32 for bug 303697
Revision history for this message
| psarhjinian (psarhjinian) wrote Re: [RV730XT] [fglrx] video tearing / vsync problems - independent of compiz use | #32 |
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(Get the code!)
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.