Greetings
I was happily crunching... and then...
I was running the Long Term Support version of Ubuntu Mate
( 14.04 (Trusty Tahr))
There was a fglrx driver update for my Radeon/ATI GPU card
and without thinking, installed it.

Afterwards, I got the "no GPU found." message from BOINC.
:-(

I back up my /home wipe the disk and go for a newer Ubuntu-Mate release: 15.10
Part of the Config steps for me is to install
fglrx-updates and
fglrx-amdcccle-updates

and reboot.

This time, the whole machine freezes on reboot.
:-(

Looking around, I see:
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1493888

Which describes the symptoms very well.
BUT
It was supposed to be fixed.

Before I waste another two days, I'll ask...
Anyone else at this point and have a successful fix????

I'll try to go into 'launchpad and submit a bug report
with a reference to 1493888.

Thanks in advance, Jay

partially SOLVED. My Mistake

I couldn't get BOINC to see the GPU so I went back to the
previous version.
*THAT* was the version with the bug.
Lesson Learned: Don't after 11PM.

Still need to get BOINC to see the shared object.
Hopefully I can figure that one out.

I did remember to do the sudo aticonfig -initial