OK. Since the problem seems to be in the Nvidia-415 driver, and that driver is not part of Ubuntu then this bug is not a valid Ubuntu bug right now. Sorry.
You can potentially make this a valid Ubuntu bug if you install (downgrade) to a supported version of the Nvidia driver like version 390.
1. Uninstall the nvidia driver version 415.
2. sudo apt install nvidia-driver-390
Then if the bug still occurs in a supported version of the driver we can reopen this bug.
OK. Since the problem seems to be in the Nvidia-415 driver, and that driver is not part of Ubuntu then this bug is not a valid Ubuntu bug right now. Sorry.
You can potentially make this a valid Ubuntu bug if you install (downgrade) to a supported version of the Nvidia driver like version 390.
1. Uninstall the nvidia driver version 415.
2. sudo apt install nvidia-driver-390
Then if the bug still occurs in a supported version of the driver we can reopen this bug.