*** This bug is a duplicate of bug 1742602 ***
https://bugs.launchpad.net/bugs/1742602
Looks like this is occurring on hybrid graphics systems. Not only Ubuntu, Arch,
Fedora all affected by this bug.
I have two Dell Latitude 5580 and Dell Latitude e5570 laptops. One has
Intel+Nvidia hybrid graphic system and other one has Intel+ATi hybrid graphic
system. Both having the same issue HDMi goes to sleep immediately after X
server starts.
The only desktop environment I found fixed this is Linux Mint Cinnamon and Mate
both initially had the issue but after updating issue is gone. Looks like the
bug is in the kernel.
** This bug has been marked a duplicate of bug 1742602
Blank screen when starting X after upgrading from 4.10 to 4.13.0-26
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https://bugs.launchpad.net/bugs/1574617
Title:
External monitor keeps going blank
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