Created attachment 52225 [details] Intel opengl problem Version: unspecified (using KDE 4.4.5) OS: Linux Hi, Compositing shuts off on an Intel GM45 regardless of the method used. I get an error that says it's too slow. I was on an OLD single-core thinkpad t400 with Intel GMA and had some compositing effects. Now I'm on a dual-core pci-express machine and the compositing shuts off in less than 5 minutes. Attempts to use the OpenGL option result in the window manager color being completely blown-out before ending as described. See attached screenshot. 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) I tried lots of tricks like Option "AccelMethod" "EXA" which helped generate a bit more speed. But basically compositing and animation don't work. Reproducible: Always Steps to Reproduce: Log into machine. Expect some compositing once the desktop is ready. Actual Results: Compositing shuts off. Expected Results: Plenty of cool animation
Sorry, that's Option "AccelMethod" "uxa". UXA option makes things snappier than the default.
- is compositing still shutdown despite you checked "disable functionality checks"? - was this on the xrender or the opengl backend then? - is it related to the activation of a particular (fullscreen) effect, like "present windows" or "desktop grid" - the overexposure only affects ARGB elements and looks like a shader bug (mesa / the intel driver is known to do this ;-), please a) list the active effects: grep -iE 'kwin4_effect_.*Enabled=true' `kde4-config --path config | cut -d":" -f1`/kwinrc | sed -e 's/kwin4_effect_//g; s/Enabled=true//g' b) try to disable direct rendering
Thomas, Thanks for the quick reply. I intentionally disabled all of the effects under the "all effects" tab. and left "improved window management" and shadows enabled. -In xrender, the colors are okay, but very slow for a modern machine.. The compositing shuts off if I do not have the "disable functionality checks" It seems like a modern machine should just fly. -In openGL, the colors get overexposed per the attached picture. Acceleration is better than xrender. -I tried all permutations of "Enable direct rendering" and "Use Vsync" it didn't affect the issue. Where do you recommend I submit the bug. I am beyond my limited skill set with graphics programming. Thanks again.
bugs.freedesktop.org, product (for opengl) is mesa and for Xrender - Xrender ;-) ensure that you're using some "up-to-date" version. reg. the overexposure: you're using really 4.4.5 and not some 4.5 and bugzilla just didn't let you enter, are you? (see bug #243181 because of this) i think scaling etc. isn't too fast with the intel xrender implementation, but just alphablending (translucency/shadows) should work.
in case of 4.4 driver bug, in case of 4.5 see bug #243181