I attempted a fresh install of Ubuntu Gnome 16.04 LTS yesterday via LiveDVD. The installation went smoothly, but upon boot I am presented with a black screen with a single line of text at the top that states :
[drm:radeon_init [radeon]] * ERROR * no UMS support in radeon module!
Then, after a few seconds it does to a grayish screen where i can move my cursor around but nothing else appears.
I've done a fair amount of research on this error but can't seem to find much help. I'm aware of the AMD/ATi driver issues people have been having surrounding the removal of fglrx and such, but the issues result in poor gpu performance. I can't boot. I can however boot it if I try it without installing.
I've tried turning "nomodeset" on and off, same outcome.
I also don't believe it has anything to do with the Gnome environment because other forums seem to show people having this issue in multiple different environments.
Please help, I'm at a loss! Thank you in advance for your help!!