Also confirmed fixed on 4.10.0-041000rc3-generic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1655450
Title: monitors not disconnected after undocking Status in linux package in Ubuntu: Confirmed Bug description: I have a Lenovo X1 Carbon (4th gen) and using the Lenovo one-link+ docking station. The laptop is connected through the docking station to 2 external monitors when docked. When undocking the laptop, the laptop does not detect that the monitors have been disconnected (leaving X in a somewhat unworkable state). Even worse, when undocking with thelid closed (which would previously have resulted in suspend) the laptop now starts working hard and the fan starts spinning up (which is particularly bad when forgetting about this and placing the laptop in a bag). The laptop also becomes very unresponsive to X actions, e.g. xrandr --query takes a a couple of seconds, switching to the console takes > 10s. This seems to be related to the following Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=1392885 which reports almost identical issues. I have not been able to try a new kernel yet to see if issues are fixed. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-30-generic 4.8.0-30.32 ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6 Uname: Linux 4.8.0-30-generic x86_64 ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jschrod 2726 F.... pulseaudio CurrentDesktop: Unity Date: Tue Jan 10 21:28:42 2017 HibernationDevice: RESUME=UUID=de3940cc-d877-44b6-9b33-16a8abd6701c InstallationDate: Installed on 2016-10-01 (101 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160922) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 13d3:5248 IMC Networks Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20FB006AMS ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-30-generic.efi.signed root=UUID=a43e313c-5c49-4859-a1aa-4446f2b9c455 ro quiet splash RelatedPackageVersions: linux-restricted-modules-4.8.0-30-generic N/A linux-backports-modules-4.8.0-30-generic N/A linux-firmware 1.161.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/02/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET43W (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FB006AMS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET43W(1.17):bd08/02/2016:svnLENOVO:pn20FB006AMS:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FB006AMS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FB006AMS dmi.product.version: ThinkPad X1 Carbon 4th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655450/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp