Ubuntu 11.04, Compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2 (compiz-core)
Adding or removing a second monitor can move windows between adjacent workspaces (presumably because the sizes of the workspaces change). I.e. if I add a second monitor to the right of the primary one, windows on the second (right) workspace may move to the - now wider - first (left) workspace. If I remove the second monitor, windows in the right part of the first workspace may move to the second workspace, as the workspaces get narrower.
This is highly annoying. (It didn't happen with my previous system, Ubuntu 10.04 without Compiz.)
This bug may be a duplicate of #255186 or #151949, but since these have been long closed without ever getting resolved, I'm opening a new one.
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Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,regex,mousepoll,imgpng,move,gnomecompat,resize,place,vpswitch,resizeinfo,wall,animation,snap,session,expo,ezoom,workarounds,staticswitcher,fade,scale]
CompositorRunning: compiz
DistUpgraded: Fresh install
DistroCodename: natty
DistroRelease: Ubuntu 11.04
DistroVariant: ubuntu
GraphicsCard:
ATI Technologies Inc Mobility Radeon HD 3400 Series [1002:95c4] (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:30dc]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: Hewlett-Packard HP EliteBook 6930p
Package: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
PackageArchitecture: all
PccardctlIdent:
Socket 0:
product info: "RICOH", "Bay8Controller", "", ""
manfid: 0x0000, 0x0000
function: 254 (unknown)
PccardctlStatus:
Socket 0:
3.3V 16-bit PC Card
Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcEnviron:
LANGUAGE=de_CH:en
PATH=(custom, user)
LANG=de_CH.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic-pae root=UUID=70d9acb5-75ac-4bf3-b80e-229c9bd3503b ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
ProcVersionSignature_: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Renderer: Unknown
Tags: natty natty ubuntu compiz-0.9
Uname: Linux 2.6.38-10-generic-pae i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 07/15/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PCD Ver. F.05
dmi.board.name: 30DC
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 87.21
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PCDVer.F.05:bd07/15/2008:svnHewlett-Packard:pnHPEliteBook6930p:pvrF.05:rvnHewlett-Packard:rn30DC:rvrKBCVersion87.21:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 6930p
dmi.product.version: F.05
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7
To add, I'm using the "Ubuntu Classic" desktop. Disabling Compiz (logging into "Ubuntu Classic (No effects)") avoids the problem.