https://bugs.freedesktop.org/show_bug.cgi?id=91779
--- Comment #14 from Ilia Mirkin <imir...@alum.mit.edu> ---
(In reply to Jeremy Huddleston Sequoia from comment #13)
> As you can see, the loading of /lib/firmware/vbios.rom fails with ENOENT,
> but it's certainly there. I verified that /lib/firmware/vbios.rom is
> exactly the same as /sys/kernel/debug/dri/0/vbios.rom in BIOS-emulation mode.
>
> Odd... gonna have to dig into it a bit more later, but if you have any
> ideas, I'd appreciate them.
The usual situation is that it's not there, and so ENOENT is returned. Note
that it has to be there when nouveau loads, not at some later point in time,
when, say, the real root partition is mounted. To maximize confusion, distro
kernel builds like to load modules from initrd, and if nouveau is loaded there,
you'll want to ensure that your vbios.rom is available from there as well.
If you build your own kernel and don't plan on soldering in random hardware
(esp not new disk controllers) into your laptop without first doing a rebuild,
you can stick the vbios.rom directly into the kernel and avoid this frustration
via CONFIG_EXTRA_FIRMWARE or something similar.
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