*** This bug is a duplicate of bug 1626935 ***
https://bugs.launchpad.net/bugs/1626935
I also have this problem, and I don't think it's a duplicate:
* The entire external screen turns black intermittently
* The background image is not affected
* The laptop screen does not flicker
Please reopen this bug.
The issue was already fixed in 16.04 by updating to the 4.6/4.8 kernel,
unfortunately it seems to pop up again after upgrading to 16.10. I
updated to Kernel 4.8.4 and 4.8.0-997, which both don't solve the issue.
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https://bugs.launchpad.net/bugs/1634449
Title:
Black flicker when leaving monitor
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