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[Bug 1532127] Re: [SKL] Disable DP MST


I verified the kernel 3.19.0-46 (linux-image-extra-3.19.0-46-generic). 
The https://bugs.launchpad.net/somerville/+bug/1482038 can not be reproduced and the monitor works well.

** Tags removed: verification-needed-vivid
** Tags added: verification-done-vivid

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  [SKL] Disable DP MST

Status in HWE Next:
  Fix Committed
Status in linux package in Ubuntu:
Status in linux source package in Vivid:
  Fix Committed
Status in linux source package in Wily:

Bug description:
  Turns out that Displayport Multi-Stream Transport has not been
  implemented for Skylake, causing blank screen issues (now that hangs
  have been fixed..) when plugging external displays to outputs
  connected to the MST hub. Disabling DP MST allows at least one of the
  outputs to work, if there are several behind the hub.

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