few kms tests - dmesg-warn - Step 2 of creating MST payload for * failed: -22
<7> [172.573218] i915 0000:00:02.0: [drm:intel_mst_enable_dp [i915]] active links 1
<7> [172.578307] i915 0000:00:02.0: [drm:drm_dp_mst_topology_get_port_validated [drm_display_helper]] port ffff88813d1e9000 (2)
<7> [172.578388] i915 0000:00:02.0: [drm:drm_dp_mst_topology_try_get_mstb [drm_display_helper]] mstb ffff8881273eb5e8 (2)
<7> [172.631408] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:267:DDI TC4/PHY TC4] - short
<7> [172.635490] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] DPRX ESI: 41 10 00 02
<7> [172.642474] i915 0000:00:02.0: [drm:drm_dp_mst_topology_try_get_mstb [drm_display_helper]] mstb ffff8881273eb5e8 (3)
<7> [172.645359] i915 0000:00:02.0: [drm:drm_dp_mst_hpd_irq_handle_event [drm_display_helper]] Got NAK reply: req 0x11 (ALLOCATE_PAYLOAD), reason 0x04 (BAD_PARAM), nak data 0x00
<7> [172.645461] i915 0000:00:02.0: [drm:drm_dp_mst_topology_put_mstb [drm_display_helper]] mstb ffff8881273eb5e8 (2)
<7> [172.645810] i915 0000:00:02.0: [drm:drm_dp_mst_topology_put_mstb [drm_display_helper]] mstb ffff8881273eb5e8 (1)
<7> [172.645941] i915 0000:00:02.0: [drm:drm_dp_mst_topology_put_port [drm_display_helper]] port ffff88813d1e9000 (1)
<3> [172.646043] i915 0000:00:02.0: [drm] *ERROR* Step 2 of creating MST payload for ffff88813d1e9000 failed: -22
<7> [172.646157] i915 0000:00:02.0: [drm:intel_get_hpd_pins [i915]] hotplug event received, stat 0x00080000, dig 0x00009888, pins 0x00001000, long 0x00000000
<7> [172.646131] i915 0000:00:02.0: [drm:intel_enable_transcoder [i915]] enabling pipe D
<7> [172.646708] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:267:DDI TC4/PHY TC4] - short
<7> [172.650362] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] DPRX ESI: 41 00 00 00
<7> [172.651037] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:267:DDI TC4/PHY TC4] - short
<7> [172.653902] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] DPRX ESI: 41 00 00 00
<7> [172.665401] i915 0000:00:02.0: [drm:intel_audio_codec_enable [i915]] [CONNECTOR:280:DP-6][ENCODER:272:DP-MST D] Enable audio codec on [CRTC:233:pipe D], 32 bytes ELD
<7> [172.681812] i915 0000:00:02.0: [drm:hsw_audio_config_update [i915]] using automatic Maud, Naud
<7> [172.683811] i915 0000:00:02.0: [drm:verify_connector_state [i915]] [CONNECTOR:280:DP-6]
<7> [172.684753] i915 0000:00:02.0: [drm:intel_modeset_verify_crtc [i915]] [CRTC:233:pipe D]
<7> [172.688518] i915 0000:00:02.0: [drm:verify_single_dpll_state.isra.0 [i915]] TC PLL 4
<7> [172.690340] i915 0000:00:02.0: [drm:i915_fifo_underrun_reset_write [i915]] Re-arming FIFO underruns on pipe D
<7> [172.691391] i915 0000:00:02.0: [drm:drm_dp_mst_put_port_malloc [drm_display_helper]] port ffff88813d1e9000 (10)
<7> [172.782850] i915 0000:00:02.0: [drm:drm_mode_addfb2] [FB:379]