many tests - Dmesg-warn/Dmesg/fail - *ERROR* Link Training Unsuccessful

http://gfx-ci.igk.intel.com/cibuglog-ng/testresult/1588525025?query_key=e71be395ff876cf0075e55a49975757ece17cdc9

<7> [655.058491] xe 0000:03:00.0: [drm:intel_dp_get_adjust_train [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] 8b/10b, lanes: 1, vswing request: 2/0/0/0, pre-emphasis request: 1/0/0/0
<7> [655.058669] xe 0000:03:00.0: [drm:intel_dp_set_signal_levels [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] 8b/10b, lanes: 1, vswing levels: 2/2/2/2, pre-emphasis levels: 1/1/1/1
<7> [655.060382] xe 0000:03:00.0: [drm:intel_dp_get_adjust_train [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] 8b/10b, lanes: 1, vswing request: 2/0/0/0, pre-emphasis request: 1/0/0/0
<7> [655.060555] xe 0000:03:00.0: [drm:intel_dp_set_signal_levels [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] 8b/10b, lanes: 1, vswing levels: 2/2/2/2, pre-emphasis levels: 1/1/1/1
<7> [655.060961] xe 0000:03:00.0: [drm:intel_dp_dump_link_status [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] ln0_1:0x1 ln2_3:0x0 align:0x0 sink:0x2 adj_req0_1:0x6 adj_req2_3:0x0
<7> [655.061164] xe 0000:03:00.0: [drm:intel_dp_link_train_phy [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] Channel equalization failed 5 times
<7> [655.061356] xe 0000:03:00.0: [drm:intel_dp_link_train_phy [xe]] [CONNECTOR:264:DP-3][ENCODER:263:DDI C/PHY C][DPRX] Link Training failed at link rate = 162000, lane count = 1
<3> [655.061889] xe 0000:03:00.0: [drm] *ERROR* Link Training Unsuccessful
<7> [655.078451] xe 0000:03:00.0: [drm:update_display_info [drm]] [CONNECTOR:264:DP-3] Supported Monitor Refresh rate range is 40 Hz - 61 Hz
<7> [655.078554] xe 0000:03:00.0: [drm:update_display_info [drm]] [CONNECTOR:264:DP-3] Assigning EDID-1.4 digital sink color depth as 10 bpc.
<7> [655.078620] xe 0000:03:00.0: [drm:update_display_info [drm]] [CONNECTOR:264:DP-3] ELD monitor LG HDR 4K
<7> [655.078685] xe 0000:03:00.0: [drm:update_display_info [drm]] [CONNECTOR:264:DP-3] ELD size 32, SAD count 1
<7> [655.078801] xe 0000:03:00.0: [drm:intel_dp_set_edid [xe]] [CONNECTOR:264:DP-3] VRR capable: yes
<7> [655.078954] xe 0000:03:00.0: [drm:intel_dp_set_edid [xe]] [CONNECTOR:264:DP-3] DFP max bpc 0, max dotclock 0, TMDS clock 0-0, PCON Max FRL BW 0Gbps
<7> [655.079832] xe 0000:03:00.0: [drm:intel_dp_set_edid [xe]] PCON ENCODER DSC DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00
<7> [655.080162] xe 0000:03:00.0: [drm:intel_dp_set_edid [xe]] [CONNECTOR:264:DP-3] RGB->YcbCr conversion? no, YCbCr 4:2:0 allowed? yes, YCbCr 4:4:4->4:2:0 conversion? no
<7> [655.082976] [drm:drm_mode_debug_printmodeline [drm]] Modeline "3840x2160": 60 533250 3840 3888 3920 4000 2160 2214 2219 2222 0x48 0x9
<7> [655.083169] [drm:drm_mode_prune_invalid [drm]] Not using 3840x2160 mode: CLOCK_HIGH
<7> [655.083338] [drm:drm_mode_debug_printmodeline [drm]] Modeline "3840x2160": 30 266640 3840 3848 3992 4000 2160 2214 2219 2222 0x40 0x9
<7> [655.083485] [drm:drm_mode_prune_invalid [drm]] Not using 3840x2160 mode: CLOCK_HIGH