Public bug reported:
I have a Dell Latitude E7470 laptop with a docking station and two
external monitors.
I made a system update yesterday (without restart), and I tried to work
today.
When the laptop lid is laid off, all displays are black and stays that
way. When it's open, it works fine. If
*** This bug is a duplicate of bug 1813663 ***
https://bugs.launchpad.net/bugs/1813663
Yes, the main issue is the displays turn black.
However, I think that both causes (closing the laptop lid and locking) are
equally important.
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