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[Timo Aaltonen <tjaalton@xxxxxxxxxx>]

Ah.. I didn't try inverted, just 90/270 degrees.. yes, inverted gives
black screen on BDW, tested on 3.19.0-14

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https://bugs.launchpad.net/bugs/1446979

Title:
  [bug] screen is black after xrandr  rotate command

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Vivid:
  Triaged

Bug description:
  When running "xrandr --output xxxxx --rotate inverted " on intel
  platforms with ubuntu 15.04, screen becomes black.

  Steps to reproduce:
  1. install ubuntu 15.04 with intel graphic card  and boot up into desktop
  2. run xrandr --output eDP1 --rotate inverted

  Expect result:
  eDP screen rotate inverted

  Actual result:
  eDP screen is black.

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