Centos 7, How to restart frozen Gnome 3

[mimbik]

Hello,
When I left my computer alone yesterday, the screen went black (just normal case) after a few minutes, but I was not able to bring system back. Youtube in Google Chrome was still playing but I had only a mouse and black screen. I logged out using ctrl+alt+F5 and than I typed init 5
I saw centos logo and spinning wheel. Later I think that everything crashed, I was not able to use keyboard.

The same day I had a second problem with gnome but In general I have a question how to deal with frozen GUI, and not to lost currently running process. I just want to simply restart Gnome. Ctrl+Alt+Backspace is not working.. I know that tracking this bug can be difficult but it is essential for me to know how to deal with corrupted interface.

Thanks

Centos 7
Nvidia 780Ti

[belgeadmin]

systemctl restart gdm.service should work. if its nonlogin u can try with ssh.

[mimbik]

Thank you, I will check that but can you write in more clear way for begginers..
What does it mean if its "nonlogin u can try with ssh"

[belgeadmin]

I mean if u cant login from gnome desktop u can try to connect from another machine with ssh.

[mimbik]

This systemctl restart gdm.service is quite good but It force a new login and I will lost all data every time. Is there any other solution or am I doing something wrong?

[TrevorH]

I think you need to read your logs and try to work out why it happens in the first place. Restarting things once they are frozen is one thing, stopping it freezing is better...

[desertcat]

Hello,
When I left my computer alone yesterday, the screen went black (just normal case) after a few minutes, but I was not able to bring system back. Youtube in Google Chrome was still playing but I had only a mouse and black screen. I logged out using ctrl+alt+F5 and than I typed init 5
I saw centos logo and spinning wheel. Later I think that everything crashed, I was not able to use keyboard.

The same day I had a second problem with gnome but In general I have a question how to deal with frozen GUI, and not to lost currently running process. I just want to simply restart Gnome. Ctrl+Alt+Backspace is not working.. I know that tracking this bug can be difficult but it is essential for me to know how to deal with corrupted interface.

Thanks

Centos 7
Nvidia 780Ti

One other thing to check is /var/log/Xorg.0.log and /var /log/gdm/:0.log these two log keep growing and growing. You might be hitting the upper end of your partition space.

[TrevorH]

Also read /var/log/messages and /var/log/secure and see if either have entries around the relevant times.