Am 27.05.2017 um 17:50 schrieb 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? >
I've narrowed this down. It seems to be a regression introduced by 4.9.25-1, 4.9.18-1 still works fine for me. Ben, were there any DRM related changes in 4.9.25 which seem like they could be relevant? -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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