Updated Intel Graphics Stack On Ubuntu 14.04 Has Some Slowdowns

Written by Michael Larabel in Display Drivers on 25 May 2014 at 01:00 AM EDT. Page 1 of 5. 6 Comments.

For those curious about the impact of running Intel "Haswell" HD Graphics 4600 on Ubuntu 14.04 LTS and then pulling in the latest Mesa 10.3-devel code followed by the Linux 3.15 kernel, it's not entirely a happy story if you are looking to maximize your Intel Linux graphics performance capabilities.

Having done a clean install of Ubuntu 14.04 LTS this week on a Core i7 4770K system I figured I would do the usual graphics driver performance update of comparing Ubuntu 14.04 out-of-the-box (Linux 3.13 + Mesa 10.1) against pulling in the latest Oibaf PPA packages to have xf86-video-intel 2.99.911 DDX and the Mesa 10.3-devel Git master code (a big leap from Mesa 10.1.0). Lastly, with the updated Intel user-space graphics drivers I then updated kernel-space by moving to the Linux 3.15 kernel via the Ubuntu Mainline Kernel PPA.

Usually making these package upgrades will result in better OpenGL performance for the constantly-improving open-source Intel Linux graphics driver stack, but not always. In this article are results of the HD Graphics 4600 comparison in these three configurations. No hardware changes/settings were altered during testing, just swapping out the software components as noted above. All benchmarking was handled automatically by the Phoronix Test Suite.

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