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[Thomas Wright <tvtom100@xxxxxxxxxxx>]

I have been having an issue with Blender 2.72 and Ubuntu Unity where
navigation in Blender snaps to orthographic views and it ONLY happens
with Ubuntu Unity.  I have switched to Cinnamon as a temporary fix.

http://blenderartists.org/forum/showthread.php?353511-Ubuntu-Linux-
Navigation-Issue&p

The issue involves using 3 Button Emulation (which is necessary for
tablet use).  When holding Alt to rotate the view, if the user hits the
Shift or Ctrl keys (which is common because those keys are also used for
navigation with 3 Button Emulation) the 3D view will snap to angled or
straight on orthographic views making it impossible to properly
navigate.  I have disabled all actions associated with these keys in
compiz settings and still get this issue.  When booting the same Ubuntu
but with Cinnamon instead of Unity, 3D view works as expected.

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https://bugs.launchpad.net/bugs/1375333

Title:
  [wishlist] Blender 3D needs more attention from Ubuntu

Status in “blender” package in Ubuntu:
  Confirmed

Bug description:
  Blender 3D is an OpenSource jewel, this is one of the best examples of how an OpenSource project can be well led and grow daily in their development. Blender 3D is a complex software, competing on a par with other great softwares of big companies.
  I can mention you some of the problems discussed in "www.blenderartists.org" about Blender and Ubuntu:

  * Blender 3D is outdated in Ubuntu: The development of Blender 3D is
  very fast incorporating important new features in each release. To
  date, the stable version of Blender is 2.71, and is close to release
  the 2.72. In Trusty Blender 2.69 is currently in the repositories.
  Even in the unreleased Ubuntu Utopic the version is 2.70.

  * Blender 3D Ubuntu packages do not include the precompiled CUDA
  Kernel. The GPU acceleration on nVidia cards is very important to the
  Cycles engine. The official Blender 3D binaries include precompiled
  CUDA Kernel. But in Ubuntu to compile the kernel you need to install
  CUDA Toolkit, this means installing a lot of packages for developers
  that you will never use. According to the next thread:

  https://devtalk.nvidia.com/default/topic/544289/can-applications-to-
  use-cuda-technology-just-installing-nvidia-driver-on-linux-/

  You should need to install only the runtime librerieas, but apparently
  that does not work in Ubuntu. Perhaps this should be revised in Ubuntu
  and it would be good to have  a metapackage to install corresponding
  CUDA runtime libraries for Blender, instead to need to install all
  CUDA Toolkit for developers.

  * Some Blender HotKeys malfunctions are reported and apparently only
  occur in Ubuntu / Unity:

  http://blenderartists.org/forum/showthread.php?316258-double-press-
  key-on-Linux

  Please, users of the best Linux distribution and the best 3D software will be grateful if you pay attention to these points.
  Thank you.

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