DRI3 Still Appears To Be Causing Problems For Nouveau
Written by Michael Larabel in Nouveau on 9 February 2016 at 12:00 AM EST. 6 Comments
As a quick PSA, while you may be wanting to try out DRI3 support with the open-source NVIDIA (Nouveau) driver as it is capable of enhancing the performance, so far my latest attempts have been marred by rendering issues.

My Radeon DRI3 experience continues to be quite good with the range of GPUs I've tried and different kernel/Mesa combinations from recently. As shown previously, there can be measurable performance boosts for Linux gamers when enabling Direct Rendering Infrastructure 3 on the open-source AMD driver.

For the Nouveau Linux 4.5 testing that I've been working on, I decided to try enabling DRI3 from the xorg.conf when having the latest Mesa 11.2-devel stack from the Padoka PPA on Ubuntu 15.10 with the latest xf86-video-nouveau. Unfortunately, DRI3 there is still not rendering correctly but window borders are black, etc.

That testing has been on Kepler GPUs where I haven't been able to get DRI3 working nicely. If there's some combination with say GLAMOR to get DRI3 working well on Nouveau, feel free to share via the forums. Once going back to DRI2, everything renders appropriately on this open-source NVIDIA Linux driver setup. Hopefully as we move later into 2016 and more Linux distributions are shipping with newer X.Org Server versions and other updated graphics components, hopefully we'll be able to see drivers back to enabling DRI3 by default.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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