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Message #57139
[Bug 1275794]
So no matter what we do, we can only reach a maximum of two unique
displays (the builtin and one external) without MST?
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https://bugs.launchpad.net/bugs/1275794
Title:
Lenovo T440s freezes when connected to docking station
Status in The Linux Kernel:
Fix Released
Status in “linux” package in Ubuntu:
Triaged
Bug description:
This bug report looks to be for the same issue:
https://bugs.freedesktop.org/show_bug.cgi?id=71267
I came across the above bug report here:
https://bbs.archlinux.org/viewtopic.php?pid=1374408
I'm running with a Thinkpad T440s and ultra dock with hdmi<->hdmi. In
my case if I dock when hdmi is connected to the dock, the mouse and
keyboard freeze once connected. When I undock they unfreeze. If I
dock when hdmi is not connected to the dock, the mouse and keyboard
don't freeze.
Ubuntu release: 14.04 Trusty Tahr (development branch)
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ApportVersion: 2.13.2-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: corey 2385 F.... pulseaudio
/dev/snd/controlC0: corey 2385 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=12d1435c-d652-4aab-8da6-3b043f3da722
InstallationDate: Installed on 2014-01-31 (3 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140130)
MachineType: LENOVO 20AQCTO1WW
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-5-generic.efi.signed root=UUID=d17999de-2672-48e5-b628-403d311d3251 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
RelatedPackageVersions:
linux-restricted-modules-3.13.0-5-generic N/A
linux-backports-modules-3.13.0-5-generic N/A
linux-firmware 1.123
Tags: trusty
Uname: Linux 3.13.0-5-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip kvm libvirtd lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/10/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET67WW (2.17 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20AQCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98405 STD
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGJET67WW(2.17):bd12/10/2013:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20AQCTO1WW
dmi.product.version: ThinkPad T440s
dmi.sys.vendor: LENOVO
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