Hi Steve, it looks like you are using drivers from a PPA (I can tell because the version is 390.129-0ubuntu0~gpu18.04.1), and that, perhaps, the nouveau driver is still loaded (?).
Can you attach the output of "journalctl -S today" and your /var/log/gpu-manager.log after reproducing the problem, please?
Hi Steve, it looks like you are using drivers from a PPA (I can tell because the version is 390.129- 0ubuntu0~ gpu18.04. 1), and that, perhaps, the nouveau driver is still loaded (?).
Can you attach the output of "journalctl -S today" and your /var/log/ gpu-manager. log after reproducing the problem, please?