Oh, maybe the problem is simpler than that... Your kernel log is telling
you that you have the wrong driver version installed. It's asking you to
use version 340 instead:
[ 2047.082719] NVRM: The NVIDIA GeForce 8400 GS GPU installed in this system is
NVRM: supported through the NVIDIA 340.xx Legacy drivers. Please
NVRM: visit http://www.nvidia.com/object/unix.html for more
NVRM: information. The 390.138 NVIDIA driver will ignore
NVRM: this GPU. Continuing probe...
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to nvidia-graphics-drivers-390 in Ubuntu.
https://bugs.launchpad.net/bugs/1887829
Title:
graphic card not working
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1887829/+subscriptions
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