[CentOS] Gnome boot problem (again :-) )

[dominic adair-jones]

On Fri, Nov 24, 2017, 8:09 PM vychytraly . <vychytraly at gmail.com> wrote:

> Hello friends
>
> I was using EL7 on gnome 3 for few months without any problem. Even 2 hours
> ago I had the computer (Laptop running on Nvidia-Prime) turned on and
> everything was working without flaw. But when I turned on the computer few
> minutes ago, I got login screen (which does not usually happen, since I
> have autologin turned on) and when I entered my login credentials I got
> black screen and went back to login screen. Everytime I entered my
> credentials the same thing happened so I was stuck in endless login loop.
> At first I thought it was caused by gnome-extension I updated to new
> version today.
>
> So I restarted the pc, went to runlevel 3, renamed the folder with
> extension in
> /home/user/.local/share/gnome-shell/extensions/"extension_name" to another
> name as a quick and dirty way to disable it. I restarted the pc and now I
> can't even get to login screen. I get stuck at text saying: "A start job is
> running for Wait for Plymouth Boot Screen to quit (25s / no limit)".
>
> I can go to another cmdline session and when I try to run exec
> gnome-session nothing happens, I just get logged off the cmdline session
> and must log in again.
>
> When I try to run startx my screen blinks and I get this output:
> xauth: file /home/user/serverauth.2372 does not exist.
>
> Output from command systemctl status gdm says:
> Starting gnome display manager
> Started gnome display manager
> GLib-GObject: g_object_set_valist: object class "GdmSession" has no
> property named "display-is-initial", GdmDisplay: display lasted 2.909...
> Seconds
> gdm_display_finish: assertion 'GDM_IS_DISPLAY (self)' failed
>
> journalctl -r gives me these errors:
> vgargb: this pci device is not a vga device
> gdm_display_finish: assertion 'GDM_IS_Display (self)' failed
> Process 1165 (gnome-shell) of user 42 killed by SIGSEGV - dumping core
> Process 1194 (gnome-shell) of user 42 killed by SIGSEGV - ignoring
> (repeated crash)
> Unrecoverable failure in component org.gnome.Shell.desktop
>
> Please could you help me with finding the problem? I am not really sure
> what could be the issue, since I did not change or update any packages
> today, nor changed the configuration files. Only change I am aware of was
> the update of the gnome-extension.
>
> Thank you very much and have a nice day
> O.
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