Resume without drm driver results in black screen

[Johannes Lundberg]

Hi

I revived this old bug
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213501

Considering this also affects all X users using scfb driver it's worth
investigating.

[John Baldwin]

Post by Johannes Lundberg
Hi
I revived this old bug
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213501
Considering this also affects all X users using scfb driver it's worth
investigating.

It's just not doable. You need some sort of driver for the GPU that knows
how to turn the display back on. That isn't a portable thing, it's GPU-specific.
You could perhaps write smaller drivers that only support resume and not
graphics acceleration, but that doesn't seem trivial.