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[Launchpad Bug Tracker <889996@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity (Ubuntu Precise)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/889996

Title:
  Automatic unity 2D fallback does not work with remote login

Status in Nux:
  Confirmed
Status in Unity:
  Confirmed
Status in nux package in Ubuntu:
  Confirmed
Status in unity package in Ubuntu:
  Confirmed
Status in nux source package in Precise:
  Confirmed
Status in unity source package in Precise:
  Confirmed

Bug description:
  In Oneiric, when logging in remotely with XDMCP + VNC and selecting
  the "Ubuntu" session, Unity fails to properly fall back to Unity 2D.
  Instead the user is presented with just their desktop background, with
  no widgets of any kind. Sometimes a Nautilus-like menu bar briefly
  appears at the top and then disappears (i.e., File, Edit, View, Go,
  Bookmarks, Help). Occasionally the menu bar remains visible and/or the
  user's desktop icons can be seen. In no case does the user ever get a
  functional Unity 2D session with the launcher.

  Manually selecting the "Ubuntu 2D" session results in a functional
  Unity 2D session as expected.

  Replacing /usr/lib/nux/unity_support_test with a symlink to /bin/false
  causes the "Ubuntu" session to fall back to a functional Unity 2D
  session as expected. So probably the problem occurs in
  /usr/lib/nux/unity_support_test.

  I have attached the .xsession-errors from an "Ubuntu" session login
  attempt.

  Repro steps:

  1) Enable XDMCP login in /etc/lightdm/lightdm.conf by adding:

  [XDMCPServer]
  enabled=true

  2) Install xinetd and vnc4server and set up a VNC port to use XDMCP
  login by creating a file like this in /etc/xinetd.d:

  service Xvnc
  {
  type = UNLISTED
  disable = no
  socket_type = stream
  protocol = tcp
  wait = no
  user = root
  server = /usr/bin/Xvnc
  server_args = -inetd -query 127.0.0.1 -once -geometry 1920x1200 -depth 24 -securitytypes=none -DisconnectClients=0 -NeverShared
  port = 5901
  }

  3) Restart xinetd & lightdm services.
  4) Connect to the chosen VNC port (5901 above) with Vinagre.
  5) Login with the "Ubuntu" session selected.

  Actual Behaviour:

  6) The user is presented with a nonfunctional session.

  Expected Behaviour:

  6) /usr/lib/nux/unity_support_test should detect that the X11 display
  does not support COMPOSITE and GLX and should exit with error code 1
  so that Unity 2D is used.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: nux-tools 1.14.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  280.13  Wed Jul 27 16:53:56 PDT 2011
   GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
  .tmp.unity.support.test.0:
   
  .tmp.unity.support.test.1:
   
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,grid,imgpng,gnomecompat,move,place,regex,resize,snap,animation,vpswitch,session,mousepoll,unitymtgrabhandles,compiztoolbox,wall,expo,workarounds,ezoom,fade,scale,unityshell]
  CompositorRunning: None
  Date: Sun Nov 13 14:28:21 2011
  DistUpgraded: Log time: 2011-11-12 18:25:20.734107
  DistroCodename: oneiric
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-current, 280.13, 2.6.38-11-generic, x86_64: installed
   nvidia-current, 280.13, 3.0.0-12-generic, x86_64: installed
  GraphicsCard:
   nVidia Corporation GT200b [GeForce GTX 275] [10de:05e6] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Giga-byte Technology Device [1458:34ce]
  JockeyStatus:
   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
   xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
  MachineType: System76, Inc. The Leopard Extreme
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: root=UUID=e7728359-15b1-4eb6-a7c9-db1b40e7c807 ro quiet splash
  SourcePackage: nux
  UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code 1: Error: no composite extension
  UpgradeStatus: Upgraded to oneiric on 2011-11-13 (0 days ago)
  dmi.bios.date: 12/14/2010
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: SOX5810J.86A.5529.2010.1214.2317
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: DX58SO
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAE29331-503
  dmi.chassis.type: 2
  dmi.modalias: dmi:bvnIntelCorp.:bvrSOX5810J.86A.5529.2010.1214.2317:bd12/14/2010:svnSystem76,Inc.:pnTheLeopardExtreme:pvrleo1:rvnIntelCorporation:rnDX58SO:rvrAAE29331-503:cvn:ct2:cvr:
  dmi.product.name: The Leopard Extreme
  dmi.product.version: leo1
  dmi.sys.vendor: System76, Inc.
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
  version.ia32-libs: ia32-libs 20090808ubuntu26
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

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