Upstream/Nouveau
http://nouveau.freedesktop.org/wiki/Bugs/
https://bugs.freedesktop.org/buglist.cgi?product=xorg&component=Drive...
If you are using packages from your distribution and are unable/unwilling to test
the latest versions of all the pieces of nouveau,
send the bug reports to your distribution and not directly to us.
If you're using an out-of-date software version,
our first question will probably be "does it still happen on latest".
Downstream/Fedora
https://apps.fedoraproject.org/packages/xorg-x11-drv-nouveau/bugs/
https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora&component=xo...