I'm seeing this behaviour in Ubuntu 15.10/Unity 7.3.2
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https://bugs.launchpad.net/bugs/1369293
Title:
The desktop will not shrink back to one monitor when an external
monitor is detached if system settings is not running
Status in Unity:
New
Status in unity package in Ubuntu:
Confirmed
Bug description:
When an external HDMI monitor is attached, the desktop is automatically
extended to it.
But when the same monitor is detached, the desktop will not automatically
shrink back to one monitor.
How ever if the system settings program is running while monitor is detached,
the desktop does shrink back to one monitor correctly.
The desktop will also shrink back, if the systems settings is run at any time
after detaching the monitor.
Using Ubuntu 14.04.1 LTS
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.2+14.04.20140714-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sun Sep 14 20:16:17 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation 4th Gen Core Processor Integrated Graphics Controller
[8086:0416] (rev 06) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:5024]
InstallationDate: Installed on 2014-05-07 (130 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 80B6QB0
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed
root=UUID=ced59d53-14ee-475e-a6d9-544cd0928b7e ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/07/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: J7ET57WW (2.02 )
dmi.board.asset.tag: Not Available
dmi.board.name: 80B6QB0
dmi.board.vendor: LENOVO
dmi.board.version: 31900058 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:bvrJ7ET57WW(2.02):bd11/07/2013:svnLENOVO:pn80B6QB0:pvrB5400:rvnLENOVO:rn80B6QB0:rvr31900058STD:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 80B6QB0
dmi.product.version: B5400
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.910-0ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.10-1ubuntu2
xserver.bootTime: Sat Sep 13 18:25:51 2014
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 13394
vendor SDC
xserver.version: 2:1.15.1-0ubuntu2.1
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