[Lenovo ThinkPad T440s] Laptop sometimes doesn't detect external monitor
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Ubuntu) |
Incomplete
|
Low
|
Unassigned |
Bug Description
Usually a reboot fixes the problem. I see stuff like this in dmesg.
[15294.887642] [drm:intel_
[15295.568309] [drm:intel_
[15295.587193] [drm:intel_
[15296.267547] [drm:intel_
[15296.286426] [drm:intel_
[15296.886015] [drm:intel_
[15296.886264] [drm:intel_
[15296.898472] [drm:intel_
[15296.899688] [drm:intel_
[15297.579305] [drm:intel_
[15297.598328] [drm:intel_
[15298.279238] [drm:intel_
[15298.298275] [drm:intel_
[15298.965500] [drm:intel_
[15298.984539] [drm:intel_
[15299.665619] [drm:intel_
[15299.684522] [drm:intel_
[15300.367119] [drm:intel_
[15300.386173] [drm:intel_
[15301.067203] [drm:intel_
[15301.086097] [drm:intel_
[15301.768998] [drm:intel_
[15301.769703] [drm:intel_
[15301.781947] [drm:intel_
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-
ProcVersionSign
Uname: Linux 4.4.0-8-generic x86_64
.tmp.unity.
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
BootLog: [[0;32m OK [0m] Started LSB: Speech Dispatcher.
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Tue Mar 1 20:58:27 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingI
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Haswell-ULT Integrated Graphics Controller [17aa:220c]
InstallationDate: Installed on 2016-02-26 (5 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224)
MachineType: LENOVO 20AQS00500
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xserver-
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/21/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: GJET85WW (2.35 )
dmi.board.
dmi.board.name: 20AQS00500
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20AQS00500
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Tue Mar 1 12:11:39 2016
xserver.configfile: default
xserver.errors: systemd-logind: failed to get session: PID 832 does not belong to any known session
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 12350
vendor AUO
xserver.version: 2:1.17.3-2ubuntu4
tags: |
added: bios-outdated-2.41 removed: bios-outdated-2.37 |
tags: |
added: bios-outdated-2.49 removed: bios-outdated-2.41 |
tags: |
added: bios-outdated-2.50 removed: bios-outdated-2.49 |
Kai Mast, thank you for reporting this and helping make Ubuntu better.
As per http:// support. lenovo. com/us/ en/products/ Laptops- and-netbooks/ ThinkPad- T-Series- laptops/ ThinkPad- T440s?linkTrack =GPS:Body_ Search% 20Products& beta=false an update to your computer's buggy, insecure, and outdated BIOS is available (2.37). If you update to this following https:/ /help.ubuntu. com/community/ BIOSUpdate does it change anything?
For more on BIOS updates and linux, please see https:/ /help.ubuntu. com/community/ ReportingBugs# Bug_reporting_ etiquette .
Please note, your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.
Also, you don't have to create a new bug report.
Once the BIOS is updated, if the problem is still reproducible:
1) Please provide the output of the following terminal command (not perform an apport-collect):
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
2) Please make a comment specifically advising on if there was an improvement or not.
3) Please mark this report Status New.
If it's not reproducible, please mark this as Invalid.
Thank you for your understanding.