(In reply to comment #51)
> maybe the same issue? https://bugs.freedesktop.org/show_bug.cgi?id=42960
> 
> also, isn't pm-utils somehow deprecated?
> if we add the parameter in /etc/pm/config.d/ will the command "systemctl
> suspend" be able to turn on the screen? i think that "systemctl suspend"
> doesn't rely on pm-utils

I looked in the pm-utils sourcecode, and adding acpi_sleep=s3_bios to the
cmdline fix it for me.

You can read a little about it here:
https://www.kernel.org/doc/Documentation/power/video.txt