This issue is also affecting me. I booted up with kernel 5.4.0-65-generic which resolved the issue.
Ubuntu 20.04.2 LTS 5.4.0-66-generic
AMD Radeon RX5700XT
This issue is also affecting me. I booted up with kernel 5.4.0-65-generic which resolved the issue.
Ubuntu 20.04.2 LTS
5.4.0-66-generic
AMD Radeon RX5700XT