External monitor not working on Helix Thinkpad

[Cay Horstmann]

Under Ubuntu 15.10, I was able to attach an external monitor using the mini DPI port of the external keyboard. Under 16.04, xrandr reports seeing the second monitor, but switching to it results in no display.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-12.28-generic 4.4.4
Uname: Linux 4.4.0-12-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: LXDE
Date: Sun Mar 13 19:44:11 2016
DistUpgraded: 2016-03-13 18:03:20,688 DEBUG enabling apt cron job
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Broadwell-U Integrated Graphics [8086:161e] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Broadwell-U Integrated Graphics [17aa:222b]
InstallationDate: Installed on 2015-12-20 (84 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20CH0022US
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-12-generic.efi.signed root=UUID=e48199f5-ebb9-4812-a803-71b19bb4647f ro
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to xenial on 2016-03-14 (0 days ago)
dmi.bios.date: 08/21/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N17ET80W (1.80 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20CH0022US
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 11
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN17ET80W(1.80):bd08/21/2015:svnLENOVO:pn20CH0022US:pvrThinkPadHelix2nd:rvnLENOVO:rn20CH0022US:rvrSDK0E50510WIN:cvnLENOVO:ct11:cvrNone:
dmi.product.name: 20CH0022US
dmi.product.version: ThinkPad Helix 2nd
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.2+16.04.20160209-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.2-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.1-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160218-1ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Sun Mar 13 19:38:34 2016
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 1121
 vendor LGD
xserver.version: 2:1.18.1-1ubuntu4

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu since that time.

Ubuntu 16.04 (xenial) reached end-of-standard-support on April 29, 2021.

Do you still see a problem related to the one that you reported when using a currently supported version of Ubuntu? Please let us know if you do otherwise this report can be left to expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]