On Sat, Jan 17, 2009 at 10:57 PM, Peter Clifton <[email protected]> wrote: > On Sat, 2009-01-17 at 18:48 +0100, Khashayar Naderehvandi wrote: >> Hi! >> >> I'm trying out the newly released intel driver on a X4500 chipset. >> The stack is composed of: >> >> * kernel 2.6.28 with the patches from >> http://intellinuxgraphics.org/2008Q4.html applied >> * libdrm 2.4.4 >> * mesa 7.3rc1 >> * xorg-server 1.5.99.901. >> * intel driver 2.6.0 >> >> With EXA compiz becomes unusably choppy and slow. I don't know how to >> explain the behavior in a good way, but it's like everything is run >> through a stroboscope. Sort of. >> With UXA, on the other hand, everything's smooth and nice, but there >> are certain artifacts. Like this: >> http://dl.getdropbox.com/u/175461/uxa-artifacts.png. >> >> Are these issues known? Any workarounds? > > The screen-saver you're previewing probably uses GL. Sounds like there > is a chance you've not got DRI2 working properly? > > I've got a similar setup to you, and UXA is working nicely. (Just turn > sync to vblank off in Compiz if you want framerate > 1/3 fps!) > > Check the Xorg.0.log to see if DRI2 is enabled. >
DRI2 definitely seems to be working well: khasha...@dionysos ~ $ cat /var/log/Xorg.0.log | grep -i dri2 (II) LoadModule: "dri2" (II) Loading /usr/lib/xorg/modules/extensions//libdri2.so (II) Module dri2: vendor="X.Org Foundation" (II) Loading extension DRI2 (II) intel(0): [DRI2] Setup complete (II) intel(0): direct rendering: DRI2 Enabled (II) GLX: Initialized DRI2 GL provider for screen 0 Sync to VBlank is off. I've noticed that the artifacts come from translucency effects. If you look at the screenshot I linked to, all those windows have some translucency to them. I don't understand the part about the screen saver, though. Thanks for commenting! Khashayar > -- > Peter Clifton > > Electrical Engineering Division, > Engineering Department, > University of Cambridge, > 9, JJ Thomson Avenue, > Cambridge > CB3 0FA > > Tel: +44 (0)7729 980173 - (No signal in the lab!) > > _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
