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Right panel of Dell MST monitor turned off

    • Closed Issue created by Paul Menzel @pmenzel

    With Linux 5.4-rc8 the right panel of the over DisplayPort connected MST monitor Dell UP3214Q turned black/off during operation. Xfce 4.14 still thought the whole screen is there, so the user only saw half of the desktop. Can you see anything in the logs?

    1. Linux 5.4-rc8 messages with drm.debug=0xe
    2. xrandr --verbose
    3. /var/log/Xorg.0.log
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