igt@kms_vblank@ subtests - incomplete - No warnings/errors

https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_123955v6/shard-glk7/igt@kms_vblank@pipe-a-ts-continuation-modeset-hang.html

<6> [449.407848] Console: switching to colour dummy device 80x25
<6> [449.408752] [IGT] kms_vblank: executing
<7> [449.445172] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [449.446410] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping caches: 0x000001dc [0x000001dc]
<7> [449.446987] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [449.464041] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:144:HDMI-A-1]
<7> [449.464062] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:144:HDMI-A-1]
<7> [449.489803] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HDMI: DVI dual 0, max TMDS clock 340000 kHz
<7> [449.489830] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HDMI sink does deep color 30.
<7> [449.489842] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HDMI sink does deep color 36.
<7> [449.489854] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] Assigning HDMI sink color depth as 12 bpc.
<7> [449.489866] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HDMI sink does YCRCB444 in deep color.
<7> [449.489878] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HF-VSDB: max TMDS clock: 600000 KHz, HDMI 2.1 support: no, DSC 1.2 support: no
<7> [449.489893] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] ELD monitor 28E850
<7> [449.489905] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] HDMI: latency present 0 0, video latency 0 0, audio latency 0 0
<7> [449.489919] i915 0000:00:02.0: [drm:update_display_info] [CONNECTOR:144:HDMI-A-1] ELD size 32, SAD count 1
<7> [449.490158] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
<7> [449.490787] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK on first message, retry
<7> [449.491406] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
<7> [449.491829] i915 0000:00:02.0: [drm:drm_dp_dual_mode_detect [drm_display_helper]] DP dual mode HDMI ID:  (err -6)
<7> [449.493458] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:144:HDMI-A-1] probed modes :
<7> [449.493474] [drm:drm_mode_debug_printmodeline] Modeline "1920x1080": 60 148500 1920 2008 2052 2200 1080 1083 1088 1125 0x48 0x9
<7> [449.493561] [drm:drm_mode_debug_printmodeline] Modeline "4096x2160": 60 594000 4096 4184 4272 4400 2160 2168 2178 2250 0x40 0x5