I've got a VM which uses an R9 Nano via passthrough. Like Mich=
ael said, my
system hangs both the VM and the host machine when installing AMD drier
updates. Likewise my VM freezes and the fan revs up to maximum upon a normal
resart of the VM, or I change anything in the QEMU startup command (e.g. ad=
ding
another hard drive to the VM). And the only way to stop either of those iss=
ues
is to power off the host machine.

The only way I have been able to change the driver for my card is during a
fresh install of Windows when no drivers are previously installed (aside fr=
om
the basic prepackaged ones are within Windows). Then I can get the lastest
drivers I already downloaded from another hard drive and install them on my
system, and it will work for the most part. However this doesn't address the
core issue.

Whilst I'm unsure if this website is the appropriate place to file this bug
report, the previous two posts are the only place I've seen this exact issue
mentioned.