[Bug 67490] Intel driver 2.21.13 hangs on shutdown process

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67490

--- Comment #14 from Chris Wilson <chris at chris-wilson.co.uk> ---
You are not using SNA, which is why this is quite strange. You have two
choices, either do a normal bisect looking for the commit that introduced the
hang, or a "reversed" bisect that looks for the commit that fixes the hang. In
a reversed bisect, you would treat as any hang as good, and any working commit
as bad:

$ git bisect start good 2.21.13 # broken
$ git bisect bad master # works
$ make && sudo make install # test
$ git bisect bad # if it works (shuts down without a hang)
$ git bisect good # if it hangs

and repeat make / git bisect (bad|good).

I suspect that both bisects will be useful to understanding this mystery.

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