Dmesg
<6> [407.919760] Console: switching to colour dummy device 80x25
<6> [407.920718] [IGT] kms_addfb_basic: executing
<7> [408.033018] i915 0000:00:02.0: [drm:i915_gem_open [i915]]
<7> [408.044726] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping caches: 0x000001dc [0x000001dc]
<7> [408.054536] i915 0000:00:02.0: [drm:i915_gem_open [i915]]
<7> [408.062836] i915 0000:00:02.0: [drm:drm_internal_framebuffer_create] bad framebuffer format .... little-endian (0x00000000)
<7> [408.064802] i915 0000:00:02.0: [drm:drm_mode_addfb2] [FB:140]
<7> [408.067001] i915 0000:00:02.0: [drm:drm_mode_addfb2] [FB:140]
<7> [408.068888] i915 0000:00:02.0: [drm:drm_mode_addfb2] [FB:140]
<6> [408.074337] [IGT] kms_addfb_basic: starting subtest basic-y-tiled-legacy
<7> [408.074878] i915 0000:00:02.0: [drm:intel_framebuffer_init [i915]] No Y tiling for legacy addfb
<7> [408.077070] i915 0000:00:02.0: [drm:drm_internal_framebuffer_create] could not create framebuffer
<6> [408.077843] [IGT] kms_addfb_basic: finished subtest basic-y-tiled-legacy, SUCCESS
<7> [408.137827] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:103:DP-1]
<7> [408.137897] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:103:DP-1]
<7> [408.140751] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:103:DP-1] disconnected
<7> [408.148544] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:113:HDMI-A-1]
<7> [408.148608] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:113:HDMI-A-1]
<7> [408.202367] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [408.213891] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [408.213965] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.216030] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpb. force bit now 1
<7> [408.228454] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [408.228513] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpb. force bit now 0
<7> [408.230162] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:113:HDMI-A-1] disconnected
<7> [408.238658] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:119:DP-2]
<7> [408.238723] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:119:DP-2]
<7> [408.240652] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:119:DP-2] disconnected
<7> [408.249476] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:125:HDMI-A-2]
<7> [408.249555] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:125:HDMI-A-2]
<7> [408.303304] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [408.314475] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [408.314533] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.315847] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpc. force bit now 1
<7> [408.326506] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [408.326562] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpc. force bit now 0
<7> [408.328000] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:125:HDMI-A-2] disconnected
<7> [408.336452] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:129:DP-3]
<7> [408.336515] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:129:DP-3]
<7> [408.338428] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:129:DP-3] disconnected
<7> [408.345885] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:135:HDMI-A-3]
<7> [408.345948] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:135:HDMI-A-3]
<7> [408.399374] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] timed out, falling back to bit banging on pin 6
<7> [408.410768] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
<7> [408.410826] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.412219] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpd. force bit now 1
<7> [408.423322] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
<7> [408.423380] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpd. force bit now 0
<7> [408.425229] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:135:HDMI-A-3] disconnected
<7> [408.432531] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:95:eDP-1]
<7> [408.432595] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:95:eDP-1]
<7> [408.436809] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [ENCODER:94:DDI A/PHY A] MST support: port: no, sink: no, modparam: yes
<7> [408.438253] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] source rates: 162000, 216000, 270000, 324000, 432000, 540000
<7> [408.439707] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] sink rates: 162000, 270000
<7> [408.441265] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] common rates: 162000, 270000
<7> [408.443033] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:95:eDP-1] Assigning EDID-1.4 digital sink color depth as 8 bpc.
<7> [408.443196] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:95:eDP-1] ELD monitor
<7> [408.443259] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:95:eDP-1] ELD size 20, SAD count 0
<7> [408.443469] i915 0000:00:02.0: [drm:intel_dp_set_edid [i915]] [CONNECTOR:95:eDP-1] VRR capable: no
<7> [408.444952] i915 0000:00:02.0: [drm:intel_dp_set_edid [i915]] [CONNECTOR:95:eDP-1] DFP max bpc 0, max dotclock 0, TMDS clock 0-0, PCON Max FRL BW 0Gbps
<7> [408.448729] i915 0000:00:02.0: [drm:intel_dp_set_edid [i915]] PCON ENCODER DSC DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00
<7> [408.450059] i915 0000:00:02.0: [drm:intel_dp_set_edid [i915]] [CONNECTOR:95:eDP-1] RGB->YcbCr conversion? no, YCbCr 4:2:0 allowed? no, YCbCr 4:4:4->4:2:0 conversion? no
<7> [408.455690] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:95:eDP-1] probed modes :
<7> [408.455755] [drm:drm_mode_debug_printmodeline] Modeline "2400x1600": 60 252750 2400 2448 2480 2560 1600 1603 1613 1646 0x48 0xa
<7> [408.456166] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:103:DP-1]
<7> [408.456239] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:103:DP-1]
<7> [408.458003] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:103:DP-1] disconnected
<7> [408.458308] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:113:HDMI-A-1]
<7> [408.458356] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:113:HDMI-A-1]
<7> [408.511370] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
<7> [408.522512] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [408.522571] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.523887] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpb. force bit now 1
<7> [408.535545] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
<7> [408.535606] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpb. force bit now 0
<7> [408.537416] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:113:HDMI-A-1] disconnected
<7> [408.537780] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:119:DP-2]
<7> [408.537852] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:119:DP-2]
<7> [408.540380] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:119:DP-2] disconnected
<7> [408.540700] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:125:HDMI-A-2]
<7> [408.540770] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:125:HDMI-A-2]
<7> [408.594332] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpc] timed out, falling back to bit banging on pin 4
<7> [408.605638] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [408.605696] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.607010] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpc. force bit now 1
<7> [408.618270] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
<7> [408.618328] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpc. force bit now 0
<7> [408.619907] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:125:HDMI-A-2] disconnected
<7> [408.620315] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:129:DP-3]
<7> [408.620381] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:129:DP-3]
<7> [408.622449] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:129:DP-3] disconnected
<7> [408.622755] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:135:HDMI-A-3]
<7> [408.622808] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:135:HDMI-A-3]
<7> [408.676355] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] timed out, falling back to bit banging on pin 6
<7> [408.687482] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
<7> [408.687538] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBUS EDID read failed, retry using GPIO bit-banging
<7> [408.689035] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enabling bit-banging on i915 gmbus dpd. force bit now 1
<7> [408.700167] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
<7> [408.700238] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabling bit-banging on i915 gmbus dpd. force bit now 0
<7> [408.701707] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:135:HDMI-A-3] disconnected
<6> [408.707172] [IGT] kms_addfb_basic: exiting, ret=0
<7> [408.710718] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping caches: 0x000001dc [0x000001dc]
<6> [408.773596] Console: switching to colour frame buffer device 300x100