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[Launchpad Bug Tracker <1491555@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:~azzar1/unity/matrix-fix

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https://bugs.launchpad.net/bugs/1491555

Title:
  Unity unnecessarily goes to low graphics mode

Status in Unity:
  In Progress
Status in unity package in Ubuntu:
  In Progress

Bug description:
  Unity goes into low graphics mode when it detects "LLVM" in the
  renderer string.  "LLVM" is not the right pattern to match because
  there are now accelerated Gallium drivers those also report "LLVM" in
  the render string, e.g. VMWare and Radeon.

  For example, this bug that showed up recently:
  https://bugs.freedesktop.org/show_bug.cgi?id=91747#c3

  Gallium drivers may fall back to the Gallium Draw module for certain
  operations, and the Draw module can go down an LLVM path if
  necessarily and enabled.

  I think the original intention of this check is to catch "llvmpipe"
  driver, so I've attached a patch to do just that.  Also, instead of
  matching "on softpipe", it seems that "softpipe" is sufficient.

  FYI, this fix can hopefully end up in Ubuntu 14.04 onwards.

  Unfortunately, I can't get through my company's proxy to push my
  branch, so instead of a merge request, please see the patch attached.

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