I just swapped my 3570k with a 9600k and an asus z390 board. Set explicitly to enable onboard video, and have a dummy HDMI plug (I even tried with a monitor attached), and I'm getting the same problem as Teixeira. I set it up no problem on a friend's 8600k/z370, but it's definitely not working for me either. I have the required lines in my go file, and even tried the "i915.alpha_support=1" in syslinux.cfg (though I thought I read somewhere that's no longer required). Output of grep | lsmod i915 is as follows:
i915 1245184 0
i2c_algo_bit 16384 1 i915
iosf_mbi 16384 1 i915
drm_kms_helper 126976 1 i915
drm 319488 2 drm_kms_helper,i915
intel_gtt 20480 1 i915
i2c_core 40960 5 drm_kms_helper,i2c_algo_bit,i2c_i801,i915,drm
video 40960 1 i915
backlight 16384 2 video,i915
Any thoughts?
Additionally, I just noticed on Intel's site that while both the 8600k and 9600k use the 630 graphics, the device id for is different.
https://ark.intel.com/products/126685/Intel-Core-i5-8600K-Processor-9M-Cache-up-to-4-30-GHz- lists the 8600k with a device id of 0x3E92
and
https://ark.intel.com/products/134896/Intel-Core-i5-9600K-Processor-9M-Cache-up-to-4-60-GHz- lists the 9600k with 0x3E98
Could it be something as simple as unRAID needing to add that 0x3E98 somewhere?