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[Bug 1355562] Re: An "Unknown" display appears with no external display connected on 12.04.5

 

** Tags added: bios-outdated-a19

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https://bugs.launchpad.net/bugs/1355562

Title:
  An "Unknown" display appears with no external display connected on
  12.04.5

Status in HWE Next:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  CID: 201202-10511 Dell Inspiron 5420

  After boot to desktop, there will be an "Unknown" display work as an
  extended display on this system with 12.04.5

  The problem with this issue is that you will be able to move the
  cursor out of your screen, even open an application on the extended
  display.

  Steps:
  1. Install 12.04.5, boot to desktop with no external monitor connected
  2. Open the "Display" utility, check whether there is an "Unknown" display

  Expected result:
  * There should be only a "Laptop" display

  Actual result:
  * An "Unknown" display available

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57~precise1 [modified: boot/vmlinuz-3.13.0-32-generic]
  ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  Date: Mon Aug 11 22:36:12 2014
  InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-lts-trusty
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-85-generic.
  ApportVersion: 2.0.1-0ubuntu17.13
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: CX20590 Analog [CX20590 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1930 F.... pulseaudio
  CRDA:
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xb1a10000 irq 46'
     Mixer name	: 'Intel PantherPoint HDMI'
     Components	: 'HDA:14f1506e,1028055e,00100002 HDA:80862806,80860101,00100000'
     Controls      : 27
     Simple ctrls  : 10
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=0cbc4d1f-a6f7-4398-a928-15aee8a03533
  InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
  MachineType: Dell Inc. Inspiron 5420
  MarkForUpload: True
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-85-generic root=UUID=34d03260-41c4-47df-b29f-e585414ee516 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-85.129~precise1-generic 3.13.11-ckt36
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-85-generic N/A
   linux-backports-modules-3.13.0-85-generic  N/A
   linux-firmware                             1.79.18
  StagingDrivers: rts5139
  Tags:  precise running-unity staging
  Uname: Linux 3.13.0-85-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 07/24/2012
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: X58
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrX58:bd07/24/2012:svnDellInc.:pnInspiron5420:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Inspiron 5420
  dmi.sys.vendor: Dell Inc.

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