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[趙惟倫 <chaoweilun@xxxxxxxxx>]

Confirmed this bug still in 14.04 and 14.10

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https://bugs.launchpad.net/bugs/859389

Title:
  [i915] DVI monitor via adapter to DisplayPort is reported as HDMI.

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I have a DisplayPort with a passive DVI adapter plugged into it to run
  my DVI monitor. However the i915 module seems to want to call this
  connection "HDMI1".

  Call it DisplayPort or DVI. Either would be correct. But HDMI is
  wrong.

  This occurs on Ubuntu 11.04 and 11.10beta2.

  $ grep conn /sys/class/drm/*/status
  /sys/class/drm/card0-DP-1/status:disconnected
  /sys/class/drm/card0-HDMI-A-1/status:connected
  /sys/class/drm/card0-VGA-1/status:disconnected

  $ xrandr
  Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
  VGA1 disconnected (normal left inverted right x axis y axis)
  HDMI1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 519mm x 324mm
     1920x1200      60.0*+
     1600x1200      60.0  
     1680x1050      60.0  
     1280x1024      75.0     60.0  
     1152x864       75.0  
     1024x768       75.1     60.0  
     800x600        75.0     60.3  
     640x480        75.0     60.0  
     720x400        70.1  
  DP1 disconnected (normal left inverted right x axis y axis)

  This is probably because the DisplayPort is running in DVI/HDMI mode
  [http://en.wikipedia.org/wiki/DisplayPort#Compatibility_with_HDMI.2FDVI]

  But it's still wrong to call a DVI connection through DisplayPort
  "HDMI".

  This bug might be caused by the fix for bug 702125.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-generic 2.6.38.11.26
  ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dan        1747 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xe1a60000 irq 45'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,1028047e,00100100 HDA:80862805,80860101,00100000'
     Controls      : 22
     Simple ctrls  : 13
  Date: Mon Sep 26 13:46:15 2011
  HibernationDevice: RESUME=UUID=645f2665-86aa-445c-9bbc-0c7a6883336b
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth1      no wireless extensions.
   
   vboxnet0  no wireless extensions.
  MachineType: Dell Inc. OptiPlex 990
  ProcEnviron:
   LANGUAGE=en_AU:en
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=e79b78d3-ed94-4285-8af0-4c7803ef2097 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-11-generic N/A
   linux-backports-modules-2.6.38-11-generic  N/A
   linux-firmware                             1.52
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/28/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0D6H9T
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd05/28/2011:svnDellInc.:pnOptiPlex990:pvr01:rvnDellInc.:rn0D6H9T:rvrA00:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex 990
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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