14/04/2011 09:26, Joost Kraaijeveld wrote: > Hi, > > Somewhere this week the video card performance dropped spectacularly. > All drag and drop operations and (web) page scrolling are suddenly > excruciating slow. Glxgears went from > 5000 to 60 frames per second (I > know, glxgears is no benchmark). Also my screen is not painted > correctly: it seems that the system "forgets" to paint all the pixels > and I am forced to change the size of my windows to get it repainted, > even if I have enabled the "Tear Free Desktop" option in the Catalyst > Control Center. > [snip] > TIA >
Hi, the "tear free desktop" feature enables automatically the vertical refresh sync, that's why glxgears is giving you roughly the same frame-rate as your display refresh frequency. This is not an indication of an absolute drop in performances. You don't tell us which desktop environment you are using, but I know that this tear-free "feature" is inducing rendering bugs with kwin (kde) compositing, sometimes simply crashing it, and it may be the same with others D-E. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4da74e7c.1060...@googlemail.com
