Thanks for the bug report.
It sounds like GNOME (in the mutter component) has frozen. When this
happens the cursor will still move because it is managed by the Xorg
process, but the screen contents are managed by the gnome-shell process.
Please try removing DisplayLink from the equation by unplugging your
dock or any other USB display adapter. Does the bug still occur using
only the laptop screen?
** Tags added: displaylink evdi
** Package changed: xorg (Ubuntu) => mutter (Ubuntu)
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
** Summary changed:
- Xorg freeze
+ Screen freeze
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1957181
Title:
Screen freeze
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1957181/+subscriptions
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