Can you please try logging into "Ubuntu on Wayland" and tell us if that
has the same problem?
** Tags added: multimonitor
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1802573
Title:
Thinkpad x220 - Unable to use 2560x1440 external display connected via
DisplayPort due flashing black screen
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