Bug#886731: linux-image-4.9.0-4-amd64: DKMS sends system in suspend since linux-image-4.9.0-3-amd64

[Michael Biebl]

Control: tags -1 + moreinfo

On Wed, 10 Jan 2018 18:12:46 +0000 Ben Hutchings <ben at decadent.org.uk>
wrote:
> Control: reassign -1 systemd
> 
> On Tue, 2018-01-09 at 11:50 +0100, Marc-Robin Wendt wrote:
> > Package: src:linux
> > Version: 4.9.65-3+deb9u1
> > Severity: normal
> > 
> > Dear Maintainer,
> > 
> > since linux-image-4.9.0-3-amd64 DKMS sends my system into suspend.
> 
> I guess you mean DPMS (Display Power Management System).
> 
> > Switching off the monitor causes suspend of the system. 
> > With Kernel-Versions linux-image-4.9.0-1-amd64 and linux-image-4.9.0-2-
> > amd64 I had no problems.
> > This problem is rather annoying, when my system starts the screensaver
> > after 10 min, the monitor switches off and sends the system into
> > suspend. Screensaver is not meant to send the system into suspend.
> 
> The standard Linux kernel does not decide when to suspend.  This is
> usually controlled by systemd-logind.

Ben, were there any DRM related changes in the kernel which would
explain, why 4.9.0-2 behaves differently then 4.9.0-1?

Marc-Robin, can you run (as root)
systemd-analyze set-log-level debug
then run journalctl -f
and then trigger a suspend by letting the screensaver kick in.
Then attach the output of journalctl.

Which graphics gard and desktop environment do you use?

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

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