It would seem that it didn’t work.
I just put on a youtube video and turned off the monitor, which resulted, seemingly, in a crash. however it returned beck to life upon turning on the monitor.
I tried to find a reason for this in the logs, but with not success. Presumably it is the issue I’ve been reading about, most notably here: https://bugs.freedesktop.org/show_bug.cgi?id=109001
Anyway, it’s no big issue, as long as I know how to avoid it happening, which in this case simply means minimizing the browser. (at least that has working up until now)
Only thing I could find is this:
Feb 25 23:25:00 TipTop root: ACPI group/action undefined: jack/lineout / LINEOUT
Feb 25 23:25:00 TipTop root: ACPI group/action undefined: jack/videoout / VIDEOOUT
Feb 25 23:25:21 TipTop root: ACPI group/action undefined: jack/lineout / LINEOUT
Feb 25 23:25:21 TipTop root: ACPI group/action undefined: jack/videoout / VIDEOOUT
and perhaps this, though without a proper timestamp it’s hard to say:
[ 24606.633] (EE) AMDGPU(0): drmmode_do_crtc_dpms cannot get last vblank counter
Could be relevant, but doesn’t really tell us much I think.