After upgrade to Kubuntu 13.10 there was a pure crash in kwin which finally led in finding the source of the bug and solving it. Related descussion about kwin crash created by this:
https://bugs.kde.org/show_bug.cgi?id=326321 The problem is created by loading the wrong libGL.so.1 in a system with bumblebee and dual graphics cards (Intel HD 3000 and nvidia NVS 4200M). When this version of libGL.so.1 => /usr/lib/nvidia-304/libGL.so.1 (detected using ldd `which kwin`| grep libGL) is used as primary it creates this problem in the graphics which in later version leads to a kwin crash or restricts compositing to XRenderer. For more information and debugging trace please read the above link. How to reproduce the bug: In an optimus capable laptop loading kwin with /usr/lib/nvidia-3**/libGL.so.1 instead of the mesa should show a similar screen in Kubuntu 13.04 or even crash in a later distribution (13.10). /* ln -s /usr/lib/nvidia-3**/libGL.so.1 /usr/lib/libGL.so.1 */ Solution: Create a link for libGL.so.1 pointing to /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1 instead of the nvidia path (and similar for lib32). Tested only in Kubuntu 13.10 under 304, 313, 319 version of nvidia driver. ** Bug watch added: KDE Bug Tracking System #326321 https://bugs.kde.org/show_bug.cgi?id=326321 -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-workspace in Ubuntu. https://bugs.launchpad.net/bugs/1240122 Title: After log in the geometry of the widgets and windows are shown rotated. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/1240122/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
