[Nouveau] Nouveau on a Jetson TK1 problems

Karol Herbst karolherbst at gmail.com
Mon Oct 17 20:39:25 UTC 2016

2016-10-17 5:48 GMT+02:00 Ilia Mirkin <imirkin at alum.mit.edu>:
> On Sun, Oct 16, 2016 at 11:39 PM, C Bergström <cbergstrom at pathscale.com> wrote:
>> Is there any particular reason you're not using the open source NVIDIA
>> Tegra drivers?
>> This is what is being used for the TX1 (Sorry I don't know if it's the
>> same for the TK1)
>> http://nv-tegra.nvidia.com/gitweb/?p=linux-3.10.git;a=summary
> That's ... not particularly helpful. Presumably non-upstream and the
> fact that it's ancient are turn-offs. Either way, he seems to have a
> desire to try to get nouveau going.
>> On Mon, Oct 17, 2016 at 11:11 AM, ben <benjaminscott at centurylink.net> wrote:
>>> I hope this is a good mailing list for this problem. I have a Jetson TK1
>>> board and I am trying to get the nouveau drivers running on it without
>>> success. I am using the following:
>>> Nouveau linux kernel 4.8.0-rc4+
>>> Nouveau DRM git master
>>> xf86-video-nouveau git master
>>> Gnurou xserver  git branch GK20A
>>> My base system is Debian.
>>> When I try to start X I get:  X: drmmode_display.c:783: drmmode_crtc_init:
>>> Assertion `ret == 0' failed. There is also a kernel log message: [drm]
>>> Cannot find any crtc or sizes - going 1024x768
> I don't think I've seen this before. The odd thing about the TK1 (and
> TX1, I believe), is that the GK20A device doesn't have any display
> capabilities - those are left up to tegra. Sounds like you're trying
> to use the nouveau ddx as the primary, which fails as there are no
> CRTC's. I believe Gnurou's xserver hacks rely on you using glamor (and
> thus the modesetting xorg ddx). Is that what you're using? Can you
> provide an xorg log?

Well it works like that basically:
modesetting DDX runs on top of the tegra 2d engine and 2d acceleration
is provided by prime offloaded glamor on top of mesa on the 3d engine
driven by nouveau.
Which basically means: remove xf86-video-nouveau

> Cheers,
>   -ilia
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