Comment 43 for bug 1243557

This bug seemed to become harder to trigger when I installed git-as-of-Oct-26, then easier again when I installed git-as-of-Nov-14, but given that this change seemed to persist after returning to 3.11 (suggesting a left-behind configuration change) and the general randomness of the bug, this would not give a reliable bisection (so the date mismatch doesn't rule out #71662 being the same bug).

In 3.8.0 the same symptoms occur but the log message is
nouveau ![ PFIFO][0000:01:00.0] unhandled status 0x01000000
I suspect (but have not tested) that this change was http://cgit.freedesktop.org/nouveau/linux-2.6/commit/drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c?id=32256c87ead3edec86bed5023a0ff96a6d907931 ,i.e. this error was what is now the warning.

Is 0x00800000 unhandled because it is an inherently fatal error, or because nobody outside Nvidia knows what it means? https://github.com/envytools/envytools/blob/master/hwdocs/fifo/nvc0-pfifo.rst is a contentless stub.