I am able to reproduce this bug report in every detail on my machine. The only
difference is that I am never present to directly observe the driver deadlock;
it always occurs when I have left the machine idle for at least a few hours.

Both tests dwagner proposed yielded negative results.

I am attaching dmesg logs from the most recent instance of the problem.

Please advise. I run Gentoo, and am able to easily introduce patches into any
part of the system for testing.