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I have ubuntu 13.04 installed and normally I use MATE as desktop viewer. After I logout and login with the default desktop viewer (Unity? gnome?) the screen is black and just the ubuntu logo appears. I can work via console (control+alt+f1), how can I restart all with MATE?

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Does sudo restart lightdm work? –  Danatela Sep 9 '13 at 7:40
    
I did so, and the terminal says "restart: unknown instance... –  matteo Sep 9 '13 at 7:43
    
Then try service lightdm restart, sudo stop lightdm && sudo start lightdm and if this doesn't work then install lightdm. –  Danatela Sep 9 '13 at 7:45
    
I tried ´sudo restart gdm´and then I rebooted. It seems working now! So I guess it was a gnome problem.. –  matteo Sep 9 '13 at 7:48
    
OK. Should I post my comment as an answer now? –  Danatela Sep 9 '13 at 7:49

1 Answer 1

up vote 0 down vote accepted

Normally, Ubuntu uses lightdm as session manager. But the older versions of Ubuntu used GDM. Once you logged in to the terminal, you can use these commands to re-enable graphical login:

sudo restart lightdm

or, if that fails

sudo restart gdm
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