Gnome suspends or blanks external monitor when laptop is docked
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-shell (Ubuntu) |
Confirmed
|
Low
|
Unassigned |
Bug Description
In the default configuration, resuming my T440s on the Lenovo ultradock results in not detecting the external monitor followed by a suspend.
If I open the lid while on the dock, gnome detects the external monitor and blanks the laptop display. Then, closing the lid results in suspend.
As a work around, using tweak tool (or UPower) to ignore the lid, does prevent the suspend. But it is not automatic; each time, one must bring up the gnome control panel->
This worked fine in 17.04, so I'm hoping that the provides enough clues that this can be fixed easily.
Thanks! I am enjoying the new Ubuntu 17.10 generally, but this situation is annoying.
System details:
linux magpie 4.13.9-
I'm trying a kernel from mainline, just to see if that matters; it doesn't. Same behavior on stock 17.10 kernel.
Software version:
Package: gnome-settings-
Versions:
3.26.1-0ubuntu5 (/var/lib/
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-settings-
Uname: Linux 4.13.9-
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 4 12:32:43 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-05-06 (546 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-settings-
UpgradeStatus: Upgraded to artful on 2017-10-20 (15 days ago)
Just to make sure, I again repeated the sequence of events outlined above on the stock 17.10 kernel:
Linux magpie 4.13.0-16-generic #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
The behavior is identical to that reported above.
One minor elaboration: when I open the control panel-> Devices- >Displays with the lid action set to "ignore", I have to toggle the external monitor, even if it is currently selected, in order to prevent the lid close from blanking the display.