kernel-packages team mailing list archive

[Taihsiang Ho <taihsiang.ho@xxxxxxxxxxxxx>]

Please refer to the screenshot when the system  connected to an external HDMI monitor.
It shows two displays but at the same time the built-in monitor is black.


** Also affects: hwe-next
   Importance: Undecided
       Status: New

** Attachment added: "Screenshot from 2015-04-10 13:43:55.png"
   https://bugs.launchpad.net/hwe-next/+bug/1442487/+attachment/4371168/+files/Screenshot%20from%202015-04-10%2013%3A43%3A55.png

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https://bugs.launchpad.net/bugs/1442487

Title:
  [Dell Inspiron 3147] blackscreen in some scenarios

Status in HWE Next Project:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  CID 201403-14889
  with updated 14.04.2 (3.16.0-34-generic #45~14.04.1)

  Steps to reproduce this bug:
  scenario A:
  connected external HDMI --> settings --> display --> try different display mode --> built-in screen will be black but alt+b+prntScr works. (external monitor still works)

  scenario B:
  system power on --> try to boot desktop --> could not boot to desktop , built-in screen will be black but alt+b+prntScr works.
  failure rate: 1 out 3

  ---------------------------------------------

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-34-generic 3.16.0-34.45~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-34.45~14.04.1-generic 3.16.7-ckt8
  Uname: Linux 3.16.0-34-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Apr 10 13:56:51 2015
  InstallationDate: Installed on 2015-04-09 (0 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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