Comment 56 for bug 1243557

(In reply to comment #18)
> It still doesn't find the firmware after updating the initramfs (sudo
> update-initramfs -u -k all), whether it is placed at
> /lib/firmware/nouveau/nvd9_fuc*, /lib/firmware/nouveau/fuc*,
> /lib/firmware/<kernel_version>/nouveau/nvd9_fuc* or
> /lib/firmware/<kernel_version>/nouveau/fuc*. (The script uses nvd9_fuc* but
> http://nouveau.freedesktop.org/wiki/NVC0_Firmware/ says just fuc* for
> pre-NVE0 cards.)

Erm, that's a lie. I've been meaning to fix it. I'm like 99.999% sure it always has to be nvXX_fucYYY[cd]. I'll double-check it again before updating the wiki. Putting it in /lib/firmware/nouveau is sufficient -- adding in the kernel version also works, but you'd normally just do that for firmware that was kernel version dependent, which this isn't.

>
> My 3.13-rc7 test kernel was compiled with the procedure in
> https://wiki.ubuntu.com/KernelTeam/GitKernelBuild; the .config lines
> containing "nouveau" are
> CONFIG_DRM_NOUVEAU=m
> CONFIG_NOUVEAU_DEBUG=5
> CONFIG_NOUVEAU_DEBUG_DEFAULT=3
> CONFIG_DRM_NOUVEAU_BACKLIGHT=y
> and kernel/drivers/gpu/drm/nouveau/nouveau.ko is on the modules.order list,
> not the modules.builtin list.

Don't know what to say. It just uses request_firmware() so it's whatever the kernel's normal mechanism for loading firmware.