I can confirm that Flash videos are choppy, no matter Compiz is on or
not, but only when they are in full-screen mode in my case.

Well, I have made several reinstalls since last week, and the problem
won't disappear: when Compiz is activated, fullscreen videos are really
slow in VLC, SMPlayer, etc. Compix effects are really slow in larger
windows.

However I noticed the following thing: if I set the procesor frequency
to max through the Gnome req scaling monitor (1800Mhz) while Compiz is
on, videos and effects are a lot faster (except for Flash vids). Don't
know if this means anything, but it seems to me that the current driver
is not really optimized to use composite with my X1250 card... and that
it needs the processor to do the calculating job. Correct me if I'm
wrong :o)

I have the current values in glxgears:

>>> with procesor at 800Mhz

cristoba...@chris-karmic:~$ glxgears 
1518 frames in 5.0 seconds = 303.546 FPS
1367 frames in 5.0 seconds = 273.295 FPS
1455 frames in 5.0 seconds = 290.883 FPS
1458 frames in 5.0 seconds = 291.383 FPS
1427 frames in 5.0 seconds = 285.288 FPS

>>> with procesor at 1.80Ghz

cristoba...@chris-karmic:~$ glxgears 
2958 frames in 5.0 seconds = 591.518 FPS
2919 frames in 5.0 seconds = 583.795 FPS
2847 frames in 5.0 seconds = 569.261 FPS
2940 frames in 5.0 seconds = 587.825 FPS


One more remark: I have activated the xorg-edgers repositories, so all of the 
values come from tests made with the newest releases.
If it helps, I have attached my Xorg.0.log. i have not attached my xorg.conf 
file because I have not tweaked it.

Thanks!

Chris

** Attachment added: "Xorg log"
   http://launchpadlibrarian.net/35596255/Xorg.0.log

-- 
Ubuntu 9.10 (Karmic) - ATI x1250 - Slow fullscreen video when compiz activated
https://bugs.launchpad.net/bugs/460505
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