touch-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Madper Xie, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect -p xorg 1382494

Please ensure you have the package xdiagnose installed, and that you
click the Yes button for attaching additional debugging information.

When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.

** Package changed: xserver-xorg-video-intel (Ubuntu) => xorg (Ubuntu)

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

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

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Touch seeded 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:
  Incomplete

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.

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