Bug#863257: gdm3: stretch - login box displayed off-screen

[Michael Biebl]

Control: tags -1 + confirmed


Hi Ross

Am 24.05.2017 um 15:11 schrieb Ross Vandegrift:
> Package: gdm3
> Version: 3.22.3-2
> Severity: normal
> 
> Hello,
> 
> After upgrading to stretch, I cannot see gdm3's login box, only the
> background.  If I press enter and type my password, I'm logged in correctly.
> So I think the login box is being displayed off-screen.
> 
> My system is a ThinkPad T450 in a dock.  The lid is closed, and two external
> monitors are attached.  Under jessie, gdm3 displayed the login box on one of
> the external displays.

Looks like I can reproduce the issue. I do have an X220 with a docking
station and external display. If I start the system with the lid closed,
the internal display is apparently not deactivated.

I remember that this worked in the past, and I suspect an issue related
to a kernel update:

> Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)

I could reproduce the problem with
linux-image-4.9.0-3-amd64  4.9.25-1

I then pulled 4.8.15-2 from
http://snapshot.debian.org/package/linux/4.8.15-2/

With that kernel, the internal display was correctly disabled when I
booted with the lid closed.

Can you confirm this observation? Does 4.8 work properly?

Regards,
Michael

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

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