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[Bug 1530171] Re: [Regression] Thinkpad dock: External monitors not recognized after 15.04 upgrade


aexl, if you boot with a kernel from 14.10 (3.16.x), does the issue go

** Tags added: latest-bios-1.81

** Tags added: regression-release

** Changed in: xorg (Ubuntu)
   Importance: Low => Medium

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

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  [Regression] Thinkpad dock: External monitors not recognized after
  15.04 upgrade

Status in xorg package in Ubuntu:

Bug description:
  External monitors are not recognized in display settings when plugged
  into any dock port.

  They *are* recognized after a reboot (not after logout).
  After plugging out and the in again they are not recognized.

  A monitor plugged in and out of the non-dock VGA is recognized instantly.
  After plugging in or out of the non-dock VGA, monitors plugged to dock ports are recognized (which serves as a crazy workaround for me now)
  (update: this works sometimes, sometimes not).

  Everything used to work with 14.10, but stopped with 15.04.

  A recent test with 1510 live CD did not fix this.

  ApportVersion: 2.17.2-0ubuntu1.8
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: 2016-01-04 01:09:49,649 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroRelease: Ubuntu 15.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:501e]
  InstallationDate: Installed on 2015-03-05 (311 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 20AUS00N00
  Package: xorg 1:7.7+7ubuntu4
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.19.0-43-generic root=UUID=82cd15d9-7510-4d2f-a698-28fa51216e13 ro rootflags=subvol=@ quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10
  Tags:  vivid ubuntu compiz-0.9
  Uname: Linux 3.19.0-43-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2016-01-04 (6 days ago)
  UserGroups: adm cdrom dip lp lpadmin plugdev sambashare saned sudo
  _MarkForUpload: True
  dmi.bios.date: 08/13/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J4ET67WW(1.67)
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AUS00N00
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrJ4ET67WW(1.67):bd08/13/2014:svnLENOVO:pn20AUS00N00:pvrThinkPadL540:rvnLENOVO:rn20AUS00N00:rvrNODPK:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AUS00N00
  dmi.product.version: ThinkPad L540
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Wed Jan  6 15:29:10 2016
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
   product id                                5568
   vendor                                     CMN
  xserver.version: 2:1.17.1-0ubuntu3.1

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