I have just upgraded to 15.10 from 15.04 and now my Ubuntu will not get past the ubuntu loading screen? It just hangs...
Managed to get back into the desktop briefly using recovery mode and reinstalled the proprietary drivers, but now I cannot get into anything on any boot option!
Ok, I couldn't get it to work and also checked out the link Charles sent me but to no avail.
I reinstalled the system and installed the proprietary drivers again and I got the same symptoms, the system hung on the plymouth screen so this looks like an AMD graphics compatibility issue. Will just have to use the xorg driver untill AMD update it.
I managed to get back in by holding shift while powering up and booting the older kernel in recovery mode. Got garbage on screen but up/down arrow revealed some options. I enabled networking which does some stuff and returns to same menu, then choose continue booting. In Settings/Other Drivers I disabled proprietary ATI driver and then restarted. I chose the stable (not 'updates') driver then. Seems to be OK now...
