To reproduce:
1. open a terminal (though it's definitely not just terminals)
2. half screen "maximize" it with CTRL+SUPER+right arrow
3. go to the workspace to the right with CTRL+ALT+right arrow
4. hit and hold ALT+TAB
this will show the window just opened on the other workspace. Alt tabbing to it will sometimes yank the viewport to the other workspace and sometimes yank the window to the currently viewed workspace. This makes it very hard to work in the way I am accustomed to.
It may also be related to bug #926359 (my intuition is that they have the same root cause: windows being placed in two workspaces)
---
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
DistUpgraded: 2012-01-05 13:59:00,548 DEBUG enabling apt cron job
DistroCodename: precise
DistroRelease: Ubuntu 12.04
DistroVariant: ubuntu
DkmsStatus:
fglrx, 8.960, 3.2.0-27-generic, x86_64: installed
fglrx, 8.960, 3.2.0-29-generic, x86_64: installed
GraphicsCard:
Advanced Micro Devices [AMD] nee ATI Redwood [Radeon HD 5670] [1002:68d8] (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:68e0]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
JockeyStatus:
xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Dell Inc. Studio XPS 9100
NonfreeKernelModules: fglrx
Package: unity 5.14.0-0ubuntu1
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=9d92d81a-3264-4e5b-a401-af2631dd2d9c ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Tags: precise running-unity precise running-unity precise running-unity precise running-unity ubuntu referred-by-support compiz-0.9
Uname: Linux 3.2.0-29-generic x86_64
UpgradeStatus: Upgraded to precise on 2012-01-05 (223 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev pulse pulse-access sambashare
dmi.bios.date: 05/26/2010
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A02
dmi.board.name: 05DN3X
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA02:bd05/26/2010:svnDellInc.:pnStudioXPS9100:pvr00:rvnDellInc.:rn05DN3X:rvrA00:cvnDellInc.:ct3:cvrNotSpecified:
dmi.product.name: Studio XPS 9100
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.8-0ubuntu1.4
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3+8.0.2-0ubuntu3.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3+8.0.2-0ubuntu3.2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2
I can't reproduce this bug on 12.04 using the steps provided...
Could you please run:
apport-collect 1037109
That will upload information about your system and attach it to the bug.