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[Sebastien Bacher <seb128@xxxxxxxxxx>]

is that still an issue?

** Changed in: unity
   Importance: Undecided => Low

** Changed in: unity (Ubuntu)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1072499

Title:
  [regression] Remote login to Unity on quantal fails if the remote
  machine has proprietary graphics drivers installed

Status in Unity:
  New
Status in unity package in Ubuntu:
  New

Bug description:
  After upgrading this computer from Ubuntu 12.04 Precise to Ubuntu
  12.10 Quantal, I am no longer able to log in to it remotely with
  vnc4server and use Unity. Upon connecting with VNC, I am presented
  with the Unity greeter, and if I choose the default Unity session and
  log in then I get a broken desktop. i.e., the Unity launcher and top
  panel are missing, shortcuts don't work, etc.

  If I understand correctly, this is because Unity 2D has been removed
  in 12.10 and the fallback for situations without hardware acceleration
  is supposed to be Gallium3D's LLVMpipe. However, proprietary graphics
  drivers replace the Mesa libGL.so implementation, so using LLVMpipe is
  not possible on machines with proprietary graphics drivers installed
  and thus Unity/Compiz fails to run.

  To solve this without reintroducing a fallback window manager, we
  probably need the next-gen Linux OpenGL ABI to support side-by-side
  libGL implementations from different vendors and auto-detect the
  correct one to use in some way. See e.g.
  http://www.phoronix.com/scan.php?page=news_item&px=MTE4NDA.

  The work-around is to use GNOME Classic (without effects) instead of
  Unity.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: unity 6.10.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
  Uname: Linux 3.5.0-18-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom]
  Date: Sun Oct 28 15:33:02 2012
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: unity
  UpgradeStatus: Upgraded to quantal on 2012-10-28 (0 days ago)

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