Re: Issues with intelfb(4) and USB keyboards

[RVP <rvp%SDF.ORG@localhost>]

On Sat, 19 Dec 2020, Brian Buhrow wrote:

> When the machine boots, the BIOS sets up the display as it should
> and the VGA port works.  when the kernel takes over, it configures
> the intelfb(4) device and the screen goes black and the monitor
> claims there's no signal.

The display should be mirrored after i915drmkms takes over (at least
it does on 9.99.77).

> [     7.124810] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/i915/i915_drv.c:636)i915_firmware_load_error_print] *ERROR* failed to load firmware i915/skl_dmc_ver1.bin (0)
> [     7.124810] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/i915/i915_drv.c:651)i915_firmware_load_error_print] *ERROR* The driver is built-in, so to load the firmware you need to
> [     7.124810] include it either in the kernel (see CONFIG_EXTRA_FIRMWARE) or
> [     7.124810] in your initrd/initramfs image.
> [     7.134810] warning: ../../../../external/bsd/drm2/dist/drm/i915/intel_pm.c:3276: WARN_ON(p->pixel_rate == 0)kern error: [drm:(../../../../external/bsd/drm2/dist/drm/i915/intel_guc_loader.c:560)guc_fw_fetch] *ERROR* Failed to fetch GuC firmware from i915/skl_guc_ver4.bin (error -2)
> [     7.134810] kern error: [drm:(../../../../external/bsd/drm2/dist/drm/i915/i915_gem.c:5417)i915_gem_init_hw] *ERROR* Failed to initialize GuC, error -5 (ignored)

Looks like you need to load the GPU firmware.
Create a directory called /libdata/firmware/i915drmkms and copy the
/lib/firmware/i915/*.bin files from some Linux system into it.
Create symbolic links, if needed, from what the kernel expects
(see above) to the latest `skl_*' (Skylake) versions of the same files.

-RVP