[Bug 94990] [GM204] GTX 970 + 4GB VRAM fails at secboot (v4.6+)

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

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https://bugs.freedesktop.org/show_bug.cgi?id=94990

--- Comment #106 from Karol Herbst <karolherbst-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to fariouche from comment #105)
> Hi,
> 
> I'm joining the group of gtx970 4GB owners who have issues with nouveau :)
> 
> I've applied 0001-nvkm_gpuobj-size-is-smaller-then-nvkm_gpuobj-size-ca.patch
> and now I have at least a console.
> However, no x11 with acceleration.
> 
> I've check the kernel messages, and besides the tons of traces ("disp:") I
> see this line:
> : #### nvkm_gpuobj_heap_acquire gpuobj->addr 4286832640, gpuobj->size 4096
> : #### nv50_instobj_size 32768
> : nouveau 0000:03:00.0: priv: GPC0: 419df4 00000000 (1840820e)
> : nouveau 0000:03:00.0: priv: GPC1: 419df4 c0000000 (1a40820d)
> : nouveau 0000:03:00.0: priv: GPC2: 514884 c0000000 (1c40820e)
> : nouveau 0000:03:00.0: priv: GPC3: 51d084 c0000000 (1f40820e)
> : nouveau 0000:03:00.0: gr: init failed, -28
> 
> 
> Seems like secboot failed somewhere. Looking at the code, GR failed most
> likely when secboot tried to initiate the reset command.
> 
> Forgot to say that I'm using kernel 4.9.
> 
> If you need me to do some tests, let me know

don't use that hack.

use the "limit ram to 3 bars" one instead.

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