[Bug 67813] [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67813

Paulo Zanoni <przanoni at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |przanoni at gmail.com

--- Comment #10 from Paulo Zanoni <przanoni at gmail.com> ---
(In reply to comment #9)
> (In reply to comment #8)
> > Created attachment 84069 [details] [review] [review]
> > Fix for the bug
> > 
> > Hi
> > 
> > Can you please verify this patch fixes the bug?
> > 
> > Please notice that this patch only fixes the "unclaimed register" messages.
> > When running module_reload I still see many problems which are not fixed by
> > this patch:
> > - We get a gpu hang most of the time
> > - Backlight doesn't work
> > - Sometimes we get an oops
> > - There's a big lockdep warning every time.
> > 
> > Thanks,
> > Paulo
> 
> I test this patch. This issue still exists.

Which issue specifically: the black screen or the "unclaimed register"
messages? Can you please post the new dmesg output?

Thanks,
Paulo

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