For Ubuntu 16.04, see update below . . .
Issue:
Updated packages recommended on sidebar package update software.
Once reboot completed, the display was either blank. The Cntl + Alt + F1 and F5 worked to bring up a terminal. If you clicked and typed blindly, you could login, but then the screen had a snowy moire pattern.
Solution:
Tried reverting to generic drivers - did not work.
Installed latest amd driver from fglrx.
Steps:
Used the steps on the AMD Binary Driver How To page.
Opened the terminal and completed the following:
$ sudo apt-get purge fglrx*
Answered Y to confirm.
$ sudo reboot
Once rebooted, got back to terminal and continued:
$ sudo apt-get install linux-headers-generic
Answered Y to confirm.
$ sudo apt-get install fglrx fglrx-updates
Answered Y to confirm.
$ sudo apt-get install fglrx-updates xvba-va-driver libva-glx1 libva-egl1 vainfo
Answered Y to confirm.
(Don't reboot)
$ sudo amdconfig --initial
$ sudo reboot
After reboot, the login screen appeared.
To confirm the OpenGL driver in use:
$ fglrxinfo
Note: Above command didn't work remotely. Only worked when logged into already into the XWindows desktop.
___________________________
Ubuntu 16.04
Following the upgrade to Ubuntu 16.04, it broke again. The fgirx drivers were uninstalled as expected, but the stock Radeon drivers didn't work.
Solution:
Followed the instructions for the AMDGPU-PRO video drivers installation for Ubuntu 16.04
1. Make sure system is up-to-date.
$ sudo apt update
$ sudo apt dist-upgrade
$ sudo reboot
See which driver you have installed:
$ sudo dpkg -l amdgpu-pro
<system returns no packages found>
You are using the stock drivers. Since the upgrade and dist-upgrade with reboot didn't work. Time to switch drivers.
Search the AMD site for this article number for detailed instructions: GPU-635
2. Download the current version of AMDGPU-PRO.
(A local wget didn't work because we received a 302 redirect page as the download. So we downloaded via another workstation and transferred it. )
3. Copy it to the server using FileZilla, and expand/uncompress the archive:
$ cd /home/myadminid/tmp/
$ sudo tar -Jxvf amdgpu-pro-17.10-446706.tar.xz
4. Install the package:
$ cd amdgpu-pro-17.10-446706
$ sudo ./amdgpu-pro-install -y
5. Add yourself to the video group:
$ sudo usermod -a -G video $LOGNAME
6. Reboot to use the new video drivers:
$ sudo reboot
Upon reboot, we were greeted with the login screen. :-)
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