[Bug 104531] Cannot turn monitor off over DP cable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104531

--- Comment #3 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Parag from comment #2)
> This is happening to me with a R7 240 with DP or HDMI cables, with 4
> different monitors - Acer, Dell, 2x Lenovo. No errors in dmesg, just that
> screen refuses to stay off after DPMS standby/off - wakes back up instantly.
> 
> Tried on Ubuntu 18.04.1 and OpenSUSE Tumbleweed all the way up to latest
> 4.9.x kernel with same results.
> 
> Any pointers on how to debug this greatly appreciated.

Are you manually turning off the displays using xset or something like that, or
are you seeing this behavior when your desktop environment enters a dpms state?

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