(In reply to Alex Deucher from comment #3)
> (In reply to Shawn Anastasio from comment #2)
> > Upon further testing, the issue seems to go away when the firmware is
> > removed from petitboot, preventing it from initializing the card before the
> > host OS. This indicates that it may have something to do with the GPU being
> > initialized twice.
> 
> The hw requires a special reset before it can be initialized again.  This is
> handled in driver for things like hibernate (S4) support.

Does the driver do the reset on a kexec reboot? If so, it seems insufficient to
mitigate this issue.