The nouveau driver doesn't seem to work with my GTX 960 card - I'm getting "Unknown chipset: NV126" message in the logs. Looks like it's then falling back to mesa (gnome-control-center shows graphics as Gallium 0.4 on llvmpipe (LLVM 3.7, 256 bits)). I'm on the latest version Fedora 23, although I haven't seen this work since I got the card. Output of journalctl -b _COMM=gdm-x-session attached. Let me know if you need anymore info - many thanks. (II) [drm] nouveau interface version: 1.3.1 (EE) Unknown chipset: NV126 (II) [drm] nouveau interface version: 1.3.1 (EE) Unknown chipset: NV126 (II) [drm] nouveau interface version: 1.3.1 (EE) Unknown chipset: NV126 (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -13 (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -13
Created attachment 122594 [details] Output of ournalctl -b _COMM=gdm-x-session
Yes, you need a more up-to-date kernel and mesa version. That is to say Linux 4.6 and mesa 11.2 which are not released yet. You will also need to update linux-firmware. Maybe rawhide would work for you?
As you can see, it's falling back to modesetting, as expected. The xf86-video-nouveau DDX does not support any maxwell GPUs at the moment. Separately, modesetting isn't able to start up glamor because of the reasons that Martin pointed out. This means that you'll get swrast when running applications inside X as well.
Makes sense. Thanks for the quick replies - and the good work in maintaining nouveau :)
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