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[Bug 952486] Re: External monitor on display port has no sync with radeon driver


Géza Búza, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .

If it remains an issue, could you please just make a comment to this.

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:

If the mainline kernel does not fix this bug, please add the following tags:

As well, please remove the tag:

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your

** Tags added: bios-outdated-3.23 needs-upstream-testing regression-

** Tags removed: needs-upstream-testing
** Tags added: needs-upstream-testing-v3.3-rc7

** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

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  External monitor on display port has no sync with radeon driver

Status in The Linux Kernel:
Status in “linux” package in Ubuntu:

Bug description:
  When I turn on the external monitor, it displays an error message:
  "The current input timing is not supported by the monitor display.
  Please change your input timing to 1920x1080@60Hz or any other monitor listed timing as per the monitor specifications."

  The GNOME display settings dialog shows exacty this recommended setting as current.
  I even tried to set it up using xrand with:
  $ xrandr --output DisplayPort-0 --auto -s 24/1920x1080 -r 60

  $ xrandr -q
  Screen 0: minimum 320 x 200, current 3200 x 1080, maximum 8192 x 8192
  DVI-0 unknown connection (normal left inverted right x axis y axis)
     1360x768       59.8  
     1152x864       60.0  
     1024x768       60.0  
     800x600        60.3  
     640x480        59.9  
     680x384       119.6    119.9  
     576x432       120.1  
     512x384       120.0  
     400x300       120.6  
     320x240       120.1  
  LVDS connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
     1280x800       60.0*+   50.1  
     1280x720       59.9  
     1152x768       59.8  
     1024x768       59.9  
     800x600        59.9  
     848x480        59.7  
     720x480        59.7  
     640x480        59.4  
  DisplayPort-0 connected 1920x1080+1280+0 (normal left inverted right x axis y axis) 509mm x 286mm
     1920x1080      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  
  VGA-0 disconnected (normal left inverted right x axis y axis)

  External monitor is a Dell U2311H unit.

  I have found a similar bug like this:

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-18-generic 3.2.0-18.29
  ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC0:  geza       2080 F.... pulseaudio
   country HU:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5490 - 5710 @ 40), (N/A, 27), DFS
   Card hw:0 'Intel'/'HDA Intel at 0xfc220000 irq 50'
     Mixer name	: 'Conexant CX20561 (Hermosa)'
     Components	: 'HDA:14f15051,17aa2100,00100000 HDA:14f12c06,17aa2122,00100000'
     Controls      : 17
     Simple ctrls  : 12
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7VHT16WW-1.06'
     Mixer name	: 'ThinkPad EC 7VHT16WW-1.06'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Sun Mar 11 20:15:41 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
  MachineType: LENOVO 2081CTO
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=540742bc-9ee9-4c77-8e80-91f88cc9f368 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.2.0-18-generic N/A
   linux-backports-modules-3.2.0-18-generic  N/A
   linux-firmware                            1.71
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/14/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6FET92WW (3.22 )
  dmi.board.name: 2081CTO
  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:bvr6FET92WW(3.22):bd12/14/2011:svnLENOVO:pn2081CTO:pvrThinkPadT500:rvnLENOVO:rn2081CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2081CTO
  dmi.product.version: ThinkPad T500
  dmi.sys.vendor: LENOVO

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