I wonder if this is a distant relation to bug 1716857... Can you try this?;
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-418/+bug/1716857/comments/26
I wonder if this is a distant relation to bug 1716857... Can you try this?;
https:/ /bugs.launchpad .net/ubuntu/ +source/ nvidia- graphics- drivers- 418/+bug/ 1716857/ comments/ 26