Version: unspecified (using KDE 4.4.4) OS: Linux After xorg 1.8 update I have a systematic problem of crash/restart of xorg when deducing then reopening applications. No information found in logs (as far as I know). Not much info apart from that, except I'm on latest KDE with composition activated and I'm using opensource Radeon driver. Reproducible: Always Steps to Reproduce: With: - Open source radeon driver (my card in an X300, rv370) - KMS disabled - Desktop effects enabled 1- Open any application. 2- Reduce opened application in taskbar 3- Show app again (clik in taskbar or alt-tab, same thing) Actual Results: X crashes and restart on KDM login Expected Results: Reduced window should repoen I fisrt though of an xorg bug because of recent 1.8 update. But problem is solved when desktop effects are disabled, so there must be a KDE issue there. Bug does not occur with KMS enabled (not a solution for me as enabling KMS really slows my machine after a while). Computer config: Dell Inspiron 6000. Intel Celeron ATI X300 (open source radeon driver) Archlinux vanilla KDE
actually it _is_ a bug in X11 (the radeon driver, likely the gl part), as clients are not supposed to crash the server, ever. kwin's opengl compositor just raises it. you should try to disable minimizing effects (minimize, magic lamp, or similar) then you'll have to find the problem in X11, eg. lookup /var/log/Xorg.0.log right after the crash and make a report to the radeon developers. (debugging X is not w/o traps, see eg. https://wiki.ubuntu.com/X/Backtracing, you'll likely need remote access)