RTX3090 driver(460.73.01) issue on ubuntu 18.04

Hello sir/madam,

We bought this brand new card, and running for a while, driver stays same. Recently, Ubuntu 18.04 somehow not detect the driver once, and restart PC resolve the issue.

My client is asking me which driver version is stable? He prefer to downgrade. Or please tell us how to retrieve hisotry log.

Thanks,
Ray