Public bug reported:
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
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ubuntu xenial
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https://bugs.launchpad.net/bugs/1556724
Title:
External monitor not working on Helix Thinkpad
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