few tests - dmesg-warn - GT0: GUC: excessive init time*
<7> [42.538049] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[ 5] = 0x56a00008
<7> [42.538209] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[ 6] = 0x0
<7> [42.538367] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[ 7] = 0x0
<7> [42.538524] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[ 8] = 0x0
<7> [42.538740] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[ 9] = 0x0
<7> [42.538913] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[10] = 0x0
<7> [42.539100] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[11] = 0x0
<7> [42.539258] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[12] = 0x0
<7> [42.539416] i915 0000:03:00.0: [drm:intel_guc_init [i915]] GT0: GUC: param[13] = 0x0
<7> [42.539583] i915 0000:03:00.0: [drm:intel_huc_init [i915]] GT0: HuC: loaded by GSC = yes
<6> [42.547486] i915 0000:03:00.0: [drm] GT0: GuC firmware i915/dg2_guc_70.bin version 70.20.0
<6> [42.547490] i915 0000:03:00.0: [drm] GT0: HuC firmware i915/dg2_huc_gsc.bin version 7.10.15
<4> [43.403326] i915 0000:03:00.0: [drm] GT0: GUC: excessive init time: 819ms! [status = 0x8002F034, count = 0, ret = 0]
<4> [43.403456] i915 0000:03:00.0: [drm] GT0: GUC: excessive init time: [freq = 300MHz, before = 100MHz, perf_limit_reasons = 0x11021002]
<7> [43.405605] i915 0000:03:00.0: [drm:guc_enable_communication [i915]] GT0: GUC: communication enabled
<6> [43.411468] i915 0000:03:00.0: [drm] GT0: GUC: submission enabled
<6> [43.411484] i915 0000:03:00.0: [drm] GT0: GUC: SLPC enabled
<6> [43.413849] i915 0000:03:00.0: [drm] GT0: GUC: RC enabled
<7> [43.483657] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed rcs'0 to rcs0
<7> [43.483810] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed bcs'0 to bcs0
<7> [43.483939] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed vcs'0 to vcs0
<7> [43.484066] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed vcs'2 to vcs1
<7> [43.484192] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed vecs'0 to vecs0
<7> [43.484348] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed vecs'1 to vecs1
<7> [43.484491] i915 0000:03:00.0: [drm:intel_engines_driver_register [i915]] renamed ccs'0 to ccs0
<7> [43.485054] i915 0000:03:00.0: [drm:skl_compute_wm [i915]] Enabled dbuf slices 0x3 -> 0x1 (total dbuf slices 0xf), mbus joined? no->no
<7> [43.485257] i915 0000:03:00.0: [drm:intel_bw_atomic_check [i915]] QGV point 0: max bw 50000 required 0
<7> [43.485624] i915 0000:03:00.0: [drm:gen9_dbuf_slices_update [i915]] Updating dbuf slices to 0x1
<7> [43.488654] i915 0000:03:00.0: [drm:drm_sysfs_connector_add] [CONNECTOR:241:DP-1] adding connector to sysfs
<7> [43.489198] i915 0000:03:00.0: [drm:intel_dp_connector_register [i915]] registering AUX A/DDI A/PHY A bus for card0-DP-1
<7> [43.490269] i915 0000:03:00.0: [drm:drm_sysfs_connector_hotplug_event] [CONNECTOR:241:DP-1] generating connector hotplug event
<7> [43.490359] i915 0000:03:00.0: [drm:drm_sysfs_connector_add] [CONNECTOR:254:DP-2] adding connector to sysfs
<7> [43.490700] i915 0000:03:00.0: [drm:intel_dp_connector_register [i915]] registering AUX B/DDI B/PHY B bus for card0-DP-2