applying steps described at : https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/982485/comments/24 solved my problem. Reverting back to 295.33 from 925.40 solves the problem.
applying steps described at : https:/ /bugs.launchpad .net/ubuntu/ +source/ nvidia- graphics- drivers/ +bug/982485/ comments/ 24 solved my problem. Reverting back to 295.33 from 925.40 solves the problem.