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[Andris Petrams <andris.petrams@xxxxxxxxx>]

I have a similar problem - when 2 monitors is connected (motherboard VGA
and DVI outputs) after computer restart then VGA monitor going to sleep.
When I choose Settings->Displays->"switch off (VGA)"->apply and then
"switch on (VGA)" apply all its ok but after restart again and again
"switch off", "switch on"

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https://bugs.launchpad.net/bugs/1515169

Title:
  [i915_bpo][SKL-U] System hangs when VGA monitor plugged in

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Vivid:
  Fix Released
Status in linux source package in Wily:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  A system being certified hangs hard when a VGA monitor is plugged in.
  The machine has a built-in DP MST bridge, but the driver has no
  support for MST. Upstream recently added a patch to add support for
  it, and it improves the situation that there's no hang anymore.
  Monitor still stays blank but that'll need another SRU once a patch
  for it is available.

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