Comment 52 for bug 1283938

Other than the shinier graphical boot, no improvement whatsoever from switching back to Nouveau (which does not seem to support HDMI Audio though, i.e. only usable on monitors that still alternatively allow analog sound), on HP dc7800p CMT with GT520:

The apport reporter just appears repeatedly afterwards (still not popping up the browser or indicating where the collected crash data has been stored).