Comment 11 for bug 1496163

(In reply to Timo Aaltonen from comment #0)
> Booting 4.3-rc1 or nightly on SKL-S results in
>
> [ 1.139104] [drm:i915_dump_device_info] i915 device info: gen=9,
> pciid=0x1912 rev=0x06 flags
> =need_gfx_hws,is_skylake,has_fbc,has_hotplug,has_llc,has_ddi,
> [ 1.139115] [drm:intel_detect_pch] Found SunrisePoint PCH
> [ 1.139419] [drm:intel_csr_ucode_init] Loading i915/skl_dmc_ver1.bin
> [ 1.139434] i915 0000:00:02.0: Direct firmware load for
> i915/skl_dmc_ver1.bin failed with error -2
> [ 1.139448] [drm:i915_firmware_load_error_print [i915]] *ERROR* failed to
> load firmware i915/skl_dmc_ver1.bin (0)
>
> the firmware is there though, and of the latest version.

i915 loading at 1.139104 seems rather early, maybe you have i915 built-in but no firmware in initrd?