igt@kms_chamelium_frames@* - dmesg-warn - Failed to read DPCD register
<7> [126.924001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [126.953001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [126.982001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.011002] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.040001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.069002] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.069111] i915 0000:03:00.0: [drm:drm_dp_dpcd_access [drm_display_helper]] AUX A/DDI A/PHY A: Too many retries, giving up. First error: -110
<3> [127.069120] i915 0000:03:00.0: [drm] *ERROR* Failed to read DPCD register 0x92
<7> [127.076326] i915 0000:03:00.0: [drm:intel_dp_set_edid [i915]] PCON ENCODER DSC DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00
<7> [127.076437] i915 0000:03:00.0: [drm:intel_dp_set_edid [i915]] [CONNECTOR:236:DP-1] RGB->YcbCr conversion? no, YCbCr 4:2:0 allowed? yes, YCbCr 4:4:4->4:2:0 conversion? no
<7> [127.105002] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.134001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.163002] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)
<7> [127.192001] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c10023f)