Created attachment 129201 [details] Xorg log file After logging in in KDE session I see only desktop wallpaper and nothing more. Nothing happens later: looks like system is stopped. But in VT I found that plasmashell is crashed and that was the reason of that unusual behavior in my system: ~$ dmesg | grep -i error [ 80.251695] plasmashell[1971]: segfault at 0 ip 00007fdb276e07c6 sp 00007fff907d9570 error 4 in nouveau_dri.so[7fdb27181000+a3e000] $ lspci | grep -i vga 04:00.0 VGA compatible controller: NVIDIA Corporation NV43 [GeForce 6600 GT] (rev a2) $ uname -a Linux desktop 4.9.6-040906-generic #201701260330 SMP Thu Jan 26 08:32:10 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux I checked on Kubuntu 16.04.1LTS with distro's Mesa and with the latest git from oibaf PPA. plasma-desktop: 5.8.5-0ubuntu1~ubuntu16.04~ppa1 xserver-xorg-video-nouveau: 1.0.13+git1701262001.1516d3~gd~x / 1.0.12-1build2 libdrm-nouveau2: 2.4.75+git1701280630.d4b834~gd~x / 2.4.67-1 / 2.4.68-1~ppa OpenGL version string: 2.1 Mesa 17.1.0-devel / Mesa 11.2.0
Created attachment 129202 [details] dmesg
Created attachment 129203 [details] syslog
Could you create a gdb log of your issue? It sounds like mine i reported here: https://bugs.freedesktop.org/show_bug.cgi?id=102349 If its exactly same the developers could tell when they look in the gdb log with debugging symbols enabled for nouveau and mesa. Would be great and really helping when you could do that. Thanks
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