Few tests - incomplete - FW not ready
<7> [764.665856] i915 0000:03:00.0: [drm:drm_dp_read_dpcd_caps [drm_display_helper]] AUX A/DDI A/PHY A: Base DPCD: 12 14 c4 81 01 1d 01 81 00 00 04 00 00 00 84
<7> [764.665870] i915 0000:03:00.0: [drm:drm_dp_read_dpcd_caps [drm_display_helper]] AUX A/DDI A/PHY A: DPCD: 14 1e c4 81 01 1d 01 81 00 00 04 00 00 00 84
<7> [764.667303] i915 0000:03:00.0: [drm:drm_dp_read_desc [drm_display_helper]] AUX A/DDI A/PHY A: DP branch: OUI 00-e0-4c dev-ID Dp1.4 HW-rev 2.0 SW-rev 130.0 quirks 0x0000
<7> [764.669537] i915 0000:03:00.0: [drm:drm_dp_read_downstream_info [drm_display_helper]] AUX A/DDI A/PHY A: DPCD DFP: 0b f0 3a 1e
<7> [764.670865] i915 0000:03:00.0: [drm:intel_dp_get_dsc_sink_cap [i915]] DSC DPCD: 03 21 00 02 2b 04 01 00 00 1f 0e 11 08 00 00
<7> [764.671880] i915 0000:03:00.0: [drm:intel_dp_detect [i915]] FEC CAPABILITY: bf
<7> [764.672942] i915 0000:03:00.0: [drm:intel_dp_detect [i915]] [ENCODER:235:DDI A/PHY A] MST support: port: yes, sink: no, modparam: yes
<4> [764.673047] mei_gsc i915.mei-gscfi.768: FW not ready: resetting: dev_state = 2 pxp = 0
<4> [764.673079] mei_gsc i915.mei-gscfi.768: unexpected reset: dev_state = ENABLED fw status = 00000355 84670000 00000000 00000000 E0020002 00000000
<7> [764.673078] i915 0000:03:00.0: [drm:intel_dp_print_rates [i915]] source rates: 162000, 216000, 270000, 324000, 432000, 540000, 648000, 810000, 1000000, 1350000
<7> [764.673235] i915 0000:03:00.0: [drm:intel_dp_print_rates [i915]] sink rates: 162000, 270000, 540000, 810000
<7> [764.673377] i915 0000:03:00.0: [drm:intel_dp_print_rates [i915]] common rates: 162000, 270000, 540000, 810000
<4> [764.673861] mei_gsc i915.mei-gsc.768: FW not ready: resetting: dev_state = 2 pxp = 2
<4> [764.673894] mei_gsc i915.mei-gsc.768: unexpected reset: dev_state = ENABLED fw status = 00000355 84670000 00000000 00000000 E0020002 00000000
<7> [764.694612] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] HDMI: DVI dual 0, max TMDS clock 300000 kHz
<7> [764.694620] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] HDMI sink does deep color 30.
<7> [764.694625] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] HDMI sink does deep color 36.
<7> [764.694629] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] Assigning HDMI sink color depth as 12 bpc.
<7> [764.694634] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] HDMI sink does YCRCB444 in deep color.
<7> [764.694639] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] HF-VSDB: max TMDS clock: 600000 KHz, HDMI 2.1 support: no, DSC 1.2 support: no
<7> [764.694644] i915 0000:03:00.0: [drm:update_display_info] [CONNECTOR:236:DP-1] CEA VCDB 0x6a