hi, I've always on a VM with Debian 10.7 in Big Sur (macOS 11.1) and Parallels 16.1.2 in modality full screen. Sometime, randomly, switching to it I get a black page and it non possible to solve, nevertheless shutting down and restarting the VM. Only start from a backup works. I tried CTRL-ALT-F1, CTRL-ALT-F2 and so, but nothing happens. No way to get the login window or to revert to the working state. I would understand if that's a problem of Parallels or it is concerned with video card switching (or switching to that window) or with Big Sur. Any solution or workaround, please? I must note also that a similar issue I got with FreeBSD 12.2 VM two times, with a black screen with some vertical short lines green and reds. thanks for help, Salvo
