Comment 28 for bug 1432171

I've got the same problem.
the unit:
UbuntuMate 15.04
HP G62 laptop
4 Gb ram 1.5Ghz quad core
APU w/ radeon graphics
Performed updates Aug18th. doesn't boot into DE( no GUI).

I only get the text "starting version 219" on the screen. then nothing. left the room for ten minutes to make a coffee and still the same thing upon return.
so, I can still tty however that is all I can do.
I have only just tried the upstart-sysv fix however still no x session.
I've tried command line to initiate X however now the following is just some of the message.

modprobe: ERROR: could not insert 'fglrx': Function not implemented
(EE) fatal server error:(EE) no screens found(EE)

What is going on?
Whilst this has mostly broken the GUI side of the system, I'm able to get the data off the machine, reformat, reinstall and see what happens..... but I'd far rather just fix it.

Linux reliant since 2008 but still a newbie.