On my Laptop (Acer 3820) I updated from 15.04 to 15.10 After the restart I just get only a black screen. At first you can see the ubuntu loading Logo, but after that just nothing. So I tried to use F1 or Ctrl+Alt+F1 but that is not working, just nothing.
I figured out that F1 or Ctrl+Alt+F1 only works at beginning of the loading screen, if I press that right at the start I can see some cryptic text (see picture):
This is the last thing you can see, after that the screen just gets black again and nothing. Cannot continue, F1 or Ctrl+Alt+F1 is not working anymore.
Well... any ideas? Does the picture help?
I could create an USB with the Ubuntu 15.10 installation on it and start a "reinstall", that way I can keep at least my home folder right? But any other settings will be lost - maybe there is another solution for that. Any ideas? Thank you.