https://bugs.freedesktop.org/show_bug.cgi?id=81644
--- Comment #142 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to comment #141)
If someone has a way to reliably reproduce the 'Packet0 not allowed!' error, please file a separate report for that. Or, if you know at least which process triggers it, you can run that process with the environment variable RADEON_DUMP_CS=1, and it should print a dump of the failed command stream(s) on stderr.
P.S. I'm afraid this report has turned into a train wreck, it's impossible to keep track of who encountered what issue(s) under what circumstances.
I opened Bug 84500 just for Packet0.