[Bug 110830] [nouveau] GeForce GTX 1660 Ti (mobile) not supported (NV168/TU116)

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=110830

--- Comment #9 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Marcin Zajaczkowski from comment #7)
> > Providers: number : 2
> > Provider 0: id: 0x6b cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 3 associated providers: 1 name:modesetting
> > Provider 1: id: 0x45 cap: 0x2, Sink Output crtcs: 4 outputs: 2 associated providers: 1 name:modesetting
> 
> Hmm, why there are 3 and 4 outputs associated to them? Is it possible that
> DP output is accessible with the Intel card only (I don't have a connector
> right here to test it organoleptically)?

"crtcs: 4; outputs: 2". All modern NVIDIA GPU's have 4 CRTC's. You can see the
full list of outputs with that grep command you ran.

You can now slave the nvidia GPU's outputs to the primary (intel) GPU:

xrandr --setprovideroutputsource 1 0

which should allow you to drive on your NVIDIA GPU's outputs by configuring
them in xrandr.

This should also be possible with a Wayland compositor, however the specifics
will vary by compositor. Xwayland has no ability to control screen setup.

(In reply to Marcin Zajaczkowski from comment #8)
> I know about a lack of acceleration, but I wanted to test offloading with
> NVidia GPU. I doesn't seem to work:

Lack of acceleration = no opengl, or anything else which requires the GPU to
execute things in the "graphics" engine.

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