Bug#841712: systemd: Display black on resume from suspend

[Michael Biebl]

Am 22.10.2016 um 22:46 schrieb Bill Gribble:
> On 10/22/2016 02:13 PM, Michael Biebl wrote:
>>
>> Does /lib/systemd/systemd-sleep hibernate
>> work?
> 
> Ah, interesting!  That works fine, display resumes as expected. Works
> only as root.

This is exactly the command that is used by systemd-hibernate.service.
The only difference afaics is, that systemctl hibernate will signal
systemd-logind and logind sends out signals to other programs via D-Bus.
Those then can react on the suspend/hibernate request.

So, my guess is, that it's not actually systemd which causes this, but
some other program that reacts on that logind signal.

Those would typically be X itself and programs listed by systemd-inhibit.

I assume if you boot into a non-graphical login (say via single on the
grub command line), then systemctl hibernate works as well?

I would try a minimal X session next, where systemd-inhibit does not
list any programs. If that fails, then it sounds like an X problem.

Check the X related log messages in journal (if you have ssh access,
that should be no problem)



-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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