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[Launchpad Bug Tracker <1530171@xxxxxxxxxxxxxxxxxx>]

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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.
---
.tmp.unity.support.test.0:

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
GraphicsCard:
 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 1:0.9.12.1+15.04.20150922-0ubuntu1
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
xserver.outputs:
 product id                                5568
 vendor                                     CMN
xserver.version: 2:1.17.1-0ubuntu3.1

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Incomplete


** Tags: apport-collected compiz-0.9 latest-bios-1.81 regression-release ubuntu vivid wily
-- 
[Regression] Thinkpad dock: External monitors not recognized after 15.04 upgrade
https://bugs.launchpad.net/bugs/1530171
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