*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
I encountered same problem, and I found the work around.
I believe this was because libglx from xorg over-written the one from
amd/nvidia.
For people using nvidia graphic cards, you can do:
sudo mv /usr/lib/xorg/modules/extensions/libglx.so
/usr/lib/xorg/modules/extensions/libglx.so.bac
sudo ln -s /usr/lib/nvidia-396/xorg/libglx.so
/usr/lib/xorg/modules/extensions/libglx.so
Then restart.
I belive amd users can do the similar thing.
reference: https://devtalk.nvidia.com/default/topic/830711/linux/failed-
to-initialize-the-glx-module-please-check-in-your-x-log-file-that-the-
glx-module-has-been-lo/
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https://bugs.launchpad.net/bugs/1752938
Title:
Upgrading Ubuntu 18.04 disables GPU hardware acceleration
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