[Bug 43829] Resuming my AMD A4-3300 based laptop leaves the screen black

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43829

--- Comment #57 from Jose P. <lbdkmjdf at sharklasers.com> ---
(In reply to comment #55)
> (In reply to comment #49)
> > I have a similar issue with a samsumg series 3 laptop with "VGA compatible
> > controller: Advanced Micro Devices, Inc. [AMD/ATI] BeaverCreek [Radeon HD
> > 6620G]" and "VGA compatible controller: Advanced Micro Devices, Inc.
> > [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series]". after resume an external
> > monitor show the system is still responsive.
> > 
> > BUT I can make the screen turn on after suspend with the next command:
> > sudo pm-suspend --quirk-test --quirk-s3-bios
> > 
> > so if you can try and this work maybe we can kick this issue.
> 
> GREAT, it works for me, thank you very much!
> I did try pm-suspend with different flags some months ago.. I guess my
> testing was too conservative :(
> @ klausenbusk at hotmail.com and austin.hoppe7 at live.com , thank you too! and
> once again, thanks AMD devs :)

I see now... I DID test the '--quirk-s3-bios' flag, but I need '--quirk-test',
which is not documented in the manpage...

from pm-utils-1.4.1/README.debugging:
"* To override the usual quirk filtering (for kernel modesetting, binary
drivers, and exotic hardware), pass --quirk-test along with any other quirks
you want to try.  This may make your system crash in new and exciting ways by
conflicting with the kernel when suspending or resuming, but is very useful for
debugging.  You have been warned."
Oh, well, I'm happy that someone found a solution and shared it with us all :D

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