plasmashell segfault in nouveau_dri.so

Submitted by Eugene @Gannet

Assigned to Default DRI bug account

Link to original bug (#99581)

Description

Created attachment 129201 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

Attachment 129201, "Xorg log file":
Xorg.0.log