If I remove my laptop from the docking station, and then close the lid (which brings the computer to sleeping mode - "mise en veille" in French- meaning it turns off the screen), the computer freezes, stay black and the only thing I can do is to hardware reboot.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-75-generic 4.4.0-75.96
ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59
Uname: Linux 4.4.0-75-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: steph 2120 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed May 3 08:59:48 2017
HibernationDevice: RESUME=UUID=fff995fa-c753-4ead-b49f-b24880af86f6
MachineType: Dell Inc. Latitude E7270
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-75-generic root=UUID=5974b776-ac48-449b-9db5-c46ef7feabda ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-75-generic N/A
linux-backports-modules-4.4.0-75-generic N/A
linux-firmware 1.157.8
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/18/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.5.3
dmi.board.name: 0K4CNR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.5.3:bd04/18/2016:svnDellInc.:pnLatitudeE7270:pvr:rvnDellInc.:rn0K4CNR:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7270
dmi.sys.vendor: Dell Inc.
Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https:/
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-
If the mainline kernel does not fix this bug, please add the tag: 'kernel-
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
[0] http://