Application: kwin (4.6.2 (4.6.2)) KDE Platform Version: 4.6.2 (4.6.2) Qt Version: 4.7.2 Operating System: Linux 2.6.38-8-generic x86_64 Distribution: Ubuntu 11.04 -- Information about the crash: I opened desktop effects and the crash report started immediately. The crash can be reproduced every time. -- Backtrace: Application: KWin (kwin), signal: Segmentation fault [KCrash Handler] #6 memcpy () at ../sysdeps/x86_64/memcpy.S:267 #7 0x00007f96c90a2b38 in __indirect_glProgramParameters4fvNV (target=1, index=15830484, num=15835424, params=<value optimized out>) at /usr/include/bits/string3.h:52 #8 0x00007f96b329226a in KWin::ARBBlurShader::init (this=0xf18dc0) at ../../../kwin/effects/blur/blurshader.cpp:473 #9 0x00007f96b328f072 in KWin::BlurEffect::reconfigure (this=0xf1c420, flags=<value optimized out>) at ../../../kwin/effects/blur/blur.cpp:76 #10 0x00007f96b328f1d7 in KWin::BlurEffect::BlurEffect (this=0xf1c420) at ../../../kwin/effects/blur/blur.cpp:48 #11 0x00007f96b328f286 in KWin::effect_create_kwin4_effect_blur () at ../../../kwin/effects/blur/blur.cpp:29 #12 0x00007f96cbb951eb in KWin::EffectsHandlerImpl::loadEffect (this=0xe8d0b0, name=...) at ../../kwin/effects.cpp:1128 #13 0x00007f96cbb963d1 in KWin::EffectsHandlerImpl::reconfigure (this=0xe8d0b0) at ../../kwin/effects.cpp:143 #14 0x00007f96cbb7104c in KWin::Workspace::setupCompositing (this=0xebc080) at ../../kwin/composite.cpp:216 #15 0x00007f96cbaf6deb in KWin::Workspace::Workspace (this=0xebc080, restore=false) at ../../kwin/workspace.cpp:222 #16 0x00007f96cbb0e38c in KWin::Application::Application (this=<value optimized out>) at ../../kwin/main.cpp:330 #17 0x00007f96cbb0fe7d in kdemain (argc=<value optimized out>, argv=0x7fff7c20d8a8) at ../../kwin/main.cpp:516 #18 0x00007f96cb741eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fff7c20d8a8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff7c20d898) at libc-start.c:226 #19 0x0000000000400669 in _start () Possible duplicates by query: bug 274090, bug 273694, bug 270818. Reported using DrKonqi
please have a lok at the dupe, check the output of you glxinfo. If the bug is reproducable and you don't understand the issues discussed in the dupe, please attach the output of glxinfo. As a workaround you can disable the blur effect. *** This bug has been marked as a duplicate of bug 270818 ***
disabled blur and now working.
That's hardly a surprise - please ensure you're not somehow using the software renderer. "glxinfo > my_glxinfo.txt" will dump the relevant information into a text file you can attach.
Created attachment 60857 [details] glxinfo as requested.
do you have "enable direct rendering" in the 3. tab of "kcmshell4 kwincompositing" checked off?
enable direct rendering is checked