All tests - dmesg-warn - *ERROR* Failed to read DPCD register
<6> [121.070291] [IGT] kms_chamelium: starting subtest hdmi-crc-fast
<7> [121.536665] i915 0000:00:02.0: [drm:i915_hotplug_work_func [i915]] running encoder hotplug functions
<7> [121.536728] i915 0000:00:02.0: [drm:i915_hotplug_work_func [i915]] Connector DP-1 (pin 5) received hotplug event. (retry 1)
<7> [121.536786] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:95:DP-1]
<7> [121.536862] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling always-on
<7> [121.537249] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling DC off
<7> [121.537307] i915 0000:00:02.0: [drm:gen9_set_dc_state [i915]] Setting DC state from 02 to 00
<7> [121.537857] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling power well 2
<7> [121.538488] i915 0000:00:02.0: [drm:intel_dp_lttpr_init [i915]] LTTPR common capabilities: 00 00 00 00 00 00 00 00
<7> [121.565159] [drm:drm_dp_dpcd_access] AUX B/DDI B/PHY B: Too many retries, giving up. First error: -5
<7> [121.565812] [drm:drm_dp_read_dpcd_caps] AUX B/DDI B/PHY B: DPCD: 11 0a 84 01 01 00 01 00 02 00 00 00 00 00 00
<7> [121.566321] [drm:drm_dp_read_desc] AUX B/DDI B/PHY B: DP sink: OUI 00-00-00 dev-ID HW-rev 0.0 SW-rev 0.0 quirks 0x0000
<7> [121.566398] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [ENCODER:94:DDI B/PHY B] MST support: port: yes, sink: no, modparam: yes
<7> [121.566473] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] source rates: 162000, 216000, 270000, 324000, 432000, 540000
<7> [121.566568] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] sink rates: 162000, 270000
<7> [121.566638] i915 0000:00:02.0: [drm:intel_dp_print_rates [i915]] common rates: 162000, 270000
<7> [121.569737] [drm:drm_dp_i2c_xfer] AUX B/DDI B/PHY B: Partial I2C reply: requested 16 bytes got 2 bytes
<7> [121.597649] [drm:drm_dp_i2c_xfer] AUX B/DDI B/PHY B: Partial I2C reply: requested 16 bytes got 2 bytes
<7> [121.617398] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: I2C defer
<7> [121.618624] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: I2C defer
<7> [121.619809] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: I2C defer
<7> [121.622968] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00200000, dig 0x00001012, pins 0x00000020, long 0x00000020
<7> [121.623031] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:94:DDI B/PHY B] - long
<7> [121.623090] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] Received HPD interrupt on PIN 5 - cnt: 10
<7> [121.623162] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:94:DDI B/PHY B] - long
<7> [121.628981] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.629051] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.635825] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00400000, dig 0x00001110, pins 0x00000040, long 0x00000000
<7> [121.635885] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:111:DDI C/PHY C] - short
<7> [121.635957] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:111:DDI C/PHY C] - short
<7> [121.637669] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.637982] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.646796] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.646829] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.655304] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.663787] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.663817] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.672300] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.680781] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.680810] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.689293] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.697773] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.697802] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.706286] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.714764] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.714795] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.723287] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.731771] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.731800] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.740279] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.748763] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.748793] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.757274] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.765760] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.765790] [drm:drm_dp_i2c_do_msg] AUX B/DDI B/PHY B: transaction timed out
<7> [121.765806] [drm:drm_connector_update_edid_property] [CONNECTOR:95:DP-1] Edid was changed.
<7> [121.765811] [drm:drm_connector_update_edid_property] Updating change counter to 34
<7> [121.765882] i915 0000:00:02.0: [drm:intel_dp_set_edid [i915]] [CONNECTOR:95:DP-1] DFP max bpc 0, max dotclock 0, TMDS clock 0-0, PCON Max FRL BW 0Gbps
<7> [121.774280] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.782807] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.791312] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.799832] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.808335] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.816857] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.825358] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.833879] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.842379] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.850935] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.859434] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.867952] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.876457] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.885006] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.893544] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.902049] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX C/DDI C/PHY C: timeout (status 0x7c1003ff)
<7> [121.910568] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.919447] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.919973] i915 0000:00:02.0: [drm:intel_dp_lttpr_init [i915]] LTTPR common capabilities: 00 00 00 00 00 00 00 00
<7> [121.928418] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.937390] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.946391] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.955390] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.964368] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.973373] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.982373] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [121.991389] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.000397] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.009391] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.018370] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.027372] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.036390] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.045292] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.054193] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.063111] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.072040] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.080922] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.089808] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.098695] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.107594] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.116482] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.125404] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7c1003ff)
<7> [122.125435] [drm:drm_dp_dpcd_access] AUX B/DDI B/PHY B: Too many retries, giving up. First error: -110
<3> [122.125441] i915 0000:00:02.0: [drm] *ERROR* Failed to read DPCD register 0x92Edited by LAKSHMINARAYANA VUDUM