desktop-packages team mailing list archive

[Launchpad Bug Tracker <1382494@xxxxxxxxxxxxxxxxxx>]

[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]

** Changed in: xorg (Ubuntu)
       Status: Incomplete => Expired

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1382494

Title:
   unexpected black screen when changing display mode.

Status in xorg package in Ubuntu:
  Expired

Bug description:
  [Testbed]
  Hardware:
  A Haswell platform laptop with an Amd Radeon R7 M265 graphics card. Connect an external monitor via HDMI port.
  Software:
  Ubuntu 14.04
  xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1

  [Reproducer]
  1. Press FN + hot key to change the display mode.
  2. Watching the built-in monitor.

  [Expect result]
  there should be 4 modes:
  Internal only  -> extended mode -> mirror mode -> external only

  [Actual result]
  mirror-mode  ->  extended mode  ->  *black mode*[1]  twice ->  mirror mode  -> internal only  ->  external only

  [1]: black mode means, the screen is black, backlight works well.
  Nothing displayed. Only cursor showed. It moves if I touch my mouse.

  [How reproducible]
  100% with my laptop.

  [old version?]
  after downgrade to xserver-xorg-video-intel 2:2.99.910-0ubuntu1, the issue can not be reproduced. So I suppose it's a regression issue.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382494/+subscriptions