This is actually a Unity issue in how it handles the unmapped Software Updater window. I'm able to reproduce the issue using the instructions in https://bugs.launchpad.net/compiz/+bug/1003950/comments/87.
I think I have a fix and will propose the solution very soon. ** Package changed: compiz (Ubuntu) => unity (Ubuntu) ** No longer affects: update-manager (Ubuntu) ** No longer affects: update-manager (Ubuntu Precise) ** Also affects: unity Importance: Undecided Status: New ** Changed in: unity Status: New => In Progress ** Changed in: unity Importance: Undecided => High ** Changed in: unity Assignee: (unassigned) => Christopher Townsend (townsend) ** Changed in: unity Milestone: None => 7.3.3 ** Changed in: unity (Ubuntu) Status: Triaged => In Progress ** Changed in: unity (Ubuntu) Assignee: (unassigned) => Christopher Townsend (townsend) ** Also affects: unity/7.2 Importance: Undecided Status: New ** Changed in: unity/7.2 Status: New => Triaged ** Changed in: unity/7.2 Importance: Undecided => High ** Changed in: unity/7.2 Assignee: (unassigned) => Christopher Townsend (townsend) ** Changed in: unity/7.2 Milestone: None => 7.2.6 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. Matching subscriptions: dp-unity https://bugs.launchpad.net/bugs/989588 Title: update-manager popup is shown on launcher and alt-tab list but window doesn't show up Status in Unity: In Progress Status in Unity 7.2 series: Triaged Status in unity package in Ubuntu: In Progress Status in unity source package in Precise: Triaged Bug description: Yesterday I got a "popup" from update-manager that shows on the launcher how many updated packages there are available, but left- clicking the icon didn't show the window. Alt-tabbing didn't help either, so I closed it from the right-click menu and the next time it showed I did get a proper popup window. Today this happened again, so filing a bug now. Steps to reproduce, hastily written: 0. (create another user account) 1. login to my main account 2. lock screen 3. switch user 4. update package lists 5. switch back to main user Update-manager window is shown in Launcher and Alt-Tab, but does not appear when selected, by either means. Closing update-manager from the quicklist, and restarting, makes a visible window, as we've said. Also, starting the upgrade from the quicklist worked, and the in-progress dialog appeared normally. BUT, when the upgrade was done, and should return to the main window, that window was still inaccessible. I don't know if the two-session scenario is the only way this bug shows up, currently. I used to have this problem, under Precise, with only one user session. But I haven't seen that behaviour in a while. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: compiz 1:0.9.7.6-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu5 Architecture: amd64 CompizPlugins: [core,composite,opengl,decor,vpswitch,compiztoolbox,imgpng,snap,unitymtgrabhandles,mousepoll,place,resize,regex,wall,move,grid,gnomecompat,session,animation,fade,expo,scale,workarounds,unityshell] CompositorRunning: compiz Date: Fri Apr 27 13:22:22 2012 DistUpgraded: 2012-01-14 13:59:33,902 DEBUG enabling apt cron job DistroCodename: precise DistroVariant: ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation Device [8086:2210] InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: Intel Corporation SandyBridge Platform PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, user) LANG=fi_FI.UTF-8 SHELL=/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=921d8d6a-73e4-4693-8a6a-10cbceb5b51c ro quiet splash vt.handoff=7 SourcePackage: compiz UpgradeStatus: Upgraded to precise on 2012-01-14 (103 days ago) dmi.bios.date: 01/13/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: ASNBCPT1.86C.0061.P00.1101131110 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: LosLunas CRB dmi.board.vendor: Intel Corporation dmi.board.version: To be filled by O.E.M. dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrASNBCPT1.86C.0061.P00.1101131110:bd01/13/2011:svnIntelCorporation:pnSandyBridgePlatform:pvrTobefilledbyO.E.M.:rvnIntelCorporation:rnLosLunasCRB:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: SandyBridge Platform dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Intel Corporation version.compiz: compiz 1:0.9.7.6-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu35 version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 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 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/989588/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp