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[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

** Description changed:

- On my Z600, with a fresh Precise installation, after installing the
- NVIDIA driver 295.40 (same version as in gPrecise), glxgears runs
- extremely slowly full-screen. When running on Precise, Chrome's GPU
- accelerated rendering path produces correct results, albeit extremely
- slowly.
+ The main problem is that OpenGL apps run slower with unityshell compared
+ to plain compiz (Gnome Classic).
+ 
+ In extreme cases, running glmark2 under Unity only achieves 0-3 FPS. Yet
+ on the same machine reports frame rates of several hundred FPS in Gnome
+ Classic. See comments #28-#30.
+ 
+ In other cases, game performance is OK but still visibly worse under
+ Unity. ioquake3 drops in frame rate by around 20% in Unity compared to
+ plain Compiz in Gnome Classic (see duplicate bug 1005074).
+ 
+ ORIGINAL DESCRIPTION:
+ On my Z600, with a fresh Precise installation, after installing the NVIDIA driver 295.40 (same version as in gPrecise), glxgears runs extremely slowly full-screen. When running on Precise, Chrome's GPU accelerated rendering path produces correct results, albeit extremely slowly.

** Also affects: unity (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: unity (Ubuntu)
       Status: New => In Progress

** Changed in: unity (Ubuntu)
     Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Also affects: unity
   Importance: Undecided
       Status: New

** Changed in: unity
       Status: New => Incomplete

** Changed in: unity
       Status: Incomplete => In Progress

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

** Changed in: unity
     Assignee: (unassigned) => Daniel van Vugt (vanvugt)

-- 
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https://bugs.launchpad.net/bugs/988079

Title:
  Much slower OpenGL frame rates with unityshell loaded, than plain
  compiz

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