Debian 10.7: randomly black screen

Discussion in 'Linux Guest OS Discussion' started by salvomic, Jan 28, 2021.

  1. salvomic

    salvomic Kilo Poster

    Messages:
    101
    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
     

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