Public bug reported:
When I login, I type the password on the laptop screen. (Maybe it's
important.) After a while, while I'm waiting to get logged in, Ubuntu
changes the display mode. Both monitor goes black, laptop screen becomes
the secondary and my external monitor becomes the primary display.
Because of Ubuntu is unable to remember to the previously set display
mode, I usually change it a bit after I have logged in. However, if I
(would like to) do this too quickly, say... less than 4-5 seconds after
I can see my desktop, my session gets terminated and I'm returned to the
login screen. You can repeat it indefinitely, it always worked (?) for
me.
I thought it's because of one of my extensions but I could reproduce it after I
have disabled them.
I haven't found any useful log entries.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
NonfreeKernelModules: vtsspp sep4_1 socperf2_0 pax
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Nov 1 21:00:45 2017
DisplayManager: gdm3
InstallationDate: Installed on 2017-08-08 (85 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to artful on 2017-10-21 (10 days ago)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful wayland-session
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https://bugs.launchpad.net/bugs/1729441
Title:
changing display mode after login terminates session
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