[gdm-list] Since update from Gnome 3.18 to 3.20 gdm X server terminates after a while

[Manuel Reimer <Manuel Spam nurfuerspam de>]

Hello,

yesterday, I got the updated from Gnome 3.18 to 3.20 (Arch Linux).

Since I got this update, I have the following issue:

As soon as I've logged in, there are usually two X servers (one on VT1 
which still shows the login screen and one on VT2 where my desktop 
session runs).

Since update to Gnome 3.20, the first X server terminates after some time:

[    92.389] (II) systemd-logind: got resume for 13:64
[    92.389] (II) systemd-logind: got resume for 13:67
[    92.389] (II) systemd-logind: got resume for 13:65
[    92.389] (II) systemd-logind: got resume for 13:66
[    95.021] (II) systemd-logind: got pause for 226:0
[    95.021] (II) systemd-logind: got pause for 13:64
[    95.021] (II) systemd-logind: got pause for 13:67
[    95.021] (II) systemd-logind: got pause for 13:65
[    95.021] (II) systemd-logind: got pause for 13:66
[   405.532] (II) evdev: Sun USB Keyboard: Close
[   405.532] (II) UnloadModule: "evdev"
[   405.532] (II) systemd-logind: releasing fd for 13:65
[   405.546] (II) evdev: USB Mouse: Close
[   405.546] (II) UnloadModule: "evdev"
[   405.546] (II) systemd-logind: releasing fd for 13:64
[   405.567] (II) evdev: Power Button: Close
[   405.567] (II) UnloadModule: "evdev"
[   405.567] (II) systemd-logind: releasing fd for 13:66
[   405.593] (II) evdev: Power Button: Close
[   405.593] (II) UnloadModule: "evdev"
[   405.593] (II) systemd-logind: releasing fd for 13:67
[   405.634] (II) NVIDIA(GPU-0): Deleting GPU-0
[   405.857] (II) Server terminated successfully (0). Closing log file.

This wouldn't be a big problem, if this wouldn't cause a VT switch back 
to VT1.

I'm using the closed source Nvidia driver and unfortunately, I can 
reproduce this every time on every login. My only solution, to have a 
system running stable right away, is to switch VT to a text terminal, 
login as root, do "pgrep X" and kill the lower PID number found by this 
to kill this "login X server" right away, so it doesn't throw me out of 
something when it terminates "automatically".

Can someone please point me to any solution for this?

- Is it possible to configure gdm in a way it does not keep an X server 
open?
- Is it possible to prevent the VT switch when the X server terminates?
- Is there anything, I could do to provide information, so this problem 
can be fixed?

Thanks in advance

Manuel