On one rig I meet the problem:
after start it prints an error to the log mulltiple times: "cannot get current settings, error -1", after that rig can freeze (i suggest that AMD driver resets).
What does this message mean?
Did anyone meet the same problem?

This rig has 4 x Radeon VII installed, downvolted, at stock memory clock, and it was rock stable before (>1k hours uptime).
Virtual memory is set to 65-70GB that should be enought.