[Bug 106316] issue with skylake firmware loading in 4.17-rc3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106316

--- Comment #12 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Mohit Keswani from comment #11)
> adding DMC will not solve any issue as the files loaded is just config,
> as far as i understand, grub is loading kernel from /boot and executing it.
> The kernel then is mounting root filesystem  in KMS mode, because without
> that it can never find the firmware files  as they are always  residing in
> /lib/firmware/i915 path.
> When kernel completes loading it will then call initramfs. At this point the
> KMS video driver should already be initialized.
> 
> Please correct me if im wrong.

If you build i915 into the kernel you need to also build the firmware into the
kernel (or at least that's what I assume, never tried it with i915 myself). If
OTOH you have i915 in initramfs then you also need the firmware in initramfs.
The third option is to not include i915 into the kernel nor the initramfs. I
use that last option myself because it avoids all this silly hassle with
firmwares.

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