Comment 3 for bug 1481129

I am seeing the same behaviour with Ubuntu 14.04.3, Kernel 3.19.0-26-generic, x86_64, as soon as I mark some text in Writer and copy it to the clipboard. Sometimes, I cannot switch to the console at all, sometimes I can. In either case, I need to hard-shutdown the machine.

In all cases, I can find the the lines

kernel: [ 0.0] nouveau E[ PFIFO][0000:01:00.0] still angry after 101 spins, halt
kernel: [ 0.0] nouveau E[ PFIFO][0000:01:00.0] still angry after 101 spins, halt

in /var/log/syslog afterwards.

The problem seems to have been reported by others, too, e.g. in https://bugs.freedesktop.org/show_bug.cgi?id=87244 where a potential patch is presented. (Which, BTW, has not been back-ported to 3.19 yet.)