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[Bug 876099] Re: Multiple users hijack each others' windows in 11.10


Don Doumakes, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:

If the mainline kernel does not fix this bug, please add the following tags:

As well, please remove the tag:

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your

** Tags added: bios-outdated-2209

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

** Tags added: regression-release

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  Multiple users hijack each others' windows in 11.10

Status in “linux” package in Ubuntu:

Bug description:
  Under 11.04 using Gnome 2, I could have a Gnome session as one user,
  open Firefox, do business related browsing.  I could also open a
  terminal, xhost +, su to a different user, and open a different
  Firefox process for hobby related browsing, different set of
  bookmarks, different home directory and all that.  It was convenient.

  Now that I've upgraded to 11.10, the behavior is different and
  confusing.  User A opens a Firefox window, no problem.  Open a
  terminal, su to user B.  User B starts up a Firefox process from the
  command line.  Output of ps clearly shows two independent processes
  (i.e. one is not the parent of the other).  A new Firefox window
  appears, but gets User A's bookmarks and other configuration, as if
  user B were simply opening a new window in user A's original process.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-12-generic 3.0.0-12.20
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
   /dev/snd/controlC1:  don        6172 F.... pulseaudio
   /dev/snd/controlC0:  don        6172 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
   Card hw:0 'Intel'/'HDA Intel at 0xfcff8000 irq 45'
     Mixer name	: 'Realtek ALC1200'
     Components	: 'HDA:10ec0888,104382fe,00100101'
     Controls      : 41
     Simple ctrls  : 23
   Card hw:1 'NVidia'/'HDA NVidia at 0xfe8fc000 irq 17'
     Mixer name	: 'Nvidia GPU 14 HDMI/DP'
     Components	: 'HDA:10de0014,10de0101,00100100'
     Controls      : 16
     Simple ctrls  : 4
  Date: Sun Oct 16 19:04:32 2011
  HibernationDevice: RESUME=UUID=cdeebca2-1ee3-4df8-973e-68f2093c28c3
   lo        no wireless extensions.
   eth0      no wireless extensions.
  MachineType: System manufacturer P5Q
   PATH=(custom, user)
  ProcKernelCmdLine: root=UUID=15101579-e4b2-4044-8361-a1e72f822a70 ro all_generic_ide nopat
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  SourcePackage: linux
  UpgradeStatus: Upgraded to oneiric on 2011-10-15 (1 days ago)
  dmi.bios.date: 05/26/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0506
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P5Q
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0506:bd05/26/2008:svnSystemmanufacturer:pnP5Q:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5Q:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: P5Q
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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