Found inspiration for a work-around on this page:
http://askubuntu.com/questions/475972/error-couldnt-find-rgb-glx-visual-
or-fbconfig-ubuntu-12-04/476916#476916
This is NOT TRIVIAL. I started by trying to follow that page's
recommendations, replacing "xserver-xorg" with "xserver-common", and
BORKED X entirely, to the point where I couldn't use the keyboard or see
things on the screen. Fortunately I was able to ssh into the system.
I did a lot of mucking about, but what will probably work is:
sudo apt-get remove --purge xserver-common
sudo apt-get install xorg
I do NOT recommend this if you're shy around computers, or if you don't
have a reliable way to ssh into your sick box. I'm sure there's a very-
much-better way of solving the problem, but I'm not good enough to know
it.
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1639371
Title:
OpenGL Graphics broken on November 4th upgrades
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/freecad/+bug/1639371/+subscriptions
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