[Nouveau] [Bug 89558] [NV118] GM108 not supported by nouveau

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89558

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Unknown chipset error for   |[NV118] GM108 not supported
                   |GeForce 840M                |by nouveau

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
There is presently no support in nouveau for this particular chip. However it
_ought_ to be pretty similar to the GM107, so you can just add a

case 0x118:

right above the "case 0x117:" in
drivers/gpu/drm/nouveau/core/engine/device/gm100.c (approximate path, going by
memory). In hypothetical scenario where that works fine, you still wouldn't be
able to use this for acceleration [but you would be able to use any displays
direct-attached to the controller, if any].

For acceleration, you can either grab blob fw (see
http://nouveau.freedesktop.org/wiki/NVC0_Firmware/), or you may want to build
the (out-of-tree style) module available at

http://cgit.freedesktop.org/~darktama/nouveau

which just 2 days ago gained support for GM107 acceleration without any blob
fw. All of these will require the extra "case" statement of course.

If you end up going through with any parts of this advice, let us know how it
works out. We'd love to add support for this chip, but no one on the nouveau
team presently has access to it.

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