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[Bug 1079933] Re: [Lenovo ThinkPad T530] External display does not work through Display port or VGA


This should work in Ubuntu 14.04. If displayport or VGA are connected to
the NVIDIA card, then you'll have to launch the nvidia-settings panel
and enable any connected outputs from there.

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  [Lenovo ThinkPad T530] External display does not work through Display
  port or VGA

Status in “linux” package in Ubuntu:
Status in “linux” source package in Precise:

Bug description:
  Connecting a display through the display port does nothing. I can try to press the key combo fn + f7 or trigger the monitor to refresh and the display is still blank on the external monitor.

  udev does not seem to notice the display port connection either.

  Expected result: External display should be mirrored when inserting a
  display port or VGA connection.

  Video info

  [    0.729694] pci 0000:00:02.0: Boot video device
  [   13.071619] Linux video capture interface: v2.00
  [   13.099290] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:02d2)
  [   13.101511] usbcore: registered new interface driver uvcvideo
  [   13.101512] USB Video Class driver (1.1.1)
  [   13.182383] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input7
  [   13.183068] ACPI: Video Device [VID] (multi-head: yes  rom: no  post: no)
  ubuntu@201205-11132:~$ dmesg | grep -i graphics
  [   12.371300] [drm] MTRR allocation failed.  Graphics performance may suffer.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-29-generic 3.2.0-29.46
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC0:  ubuntu     1539 F.... pulseaudio
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf2530000 irq 46'
     Mixer name	: 'Intel PantherPoint HDMI'
     Components	: 'HDA:10ec0269,17aa21f6,00100203 HDA:80862806,80860101,00100000'
     Controls      : 36
     Simple ctrls  : 13
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
     Mixer name	: 'ThinkPad EC (unknown)'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Fri Nov 16 18:44:51 2012
  HibernationDevice: RESUME=UUID=33af243d-8694-4458-a1eb-5c94d7303d8e
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  MachineType: LENOVO 235923U
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=212db818-8dcd-4bbd-94a9-0a9ca8d086a3 ro quiet splash initcall_debug vt.handoff=7
   linux-restricted-modules-3.2.0-29-generic N/A
   linux-backports-modules-3.2.0-29-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/29/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G4ET37WW (1.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 235923U
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG4ET37WW(1.12):bd05/29/2012:svnLENOVO:pn235923U:pvrThinkPadT530:rvnLENOVO:rn235923U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 235923U
  dmi.product.version: ThinkPad T530
  dmi.sys.vendor: LENOVO

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