https://bugs.freedesktop.org/show_bug.cgi?id=43829
--- Comment #55 from Jose P. lbdkmjdf@sharklasers.com --- (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@hotmail.com and austin.hoppe7@live.com , thank you too! and once again, thanks AMD devs :)