igt@i915_pm_rpm@module-reload - dmesg-warn - *ERROR* Invalid/Unknown vendor OUI, *ERROR* LSPCON vendor detection failed
7> [192.404365] [drm:lspcon_wake_native_aux_ch [i915]] Native AUX CH up, DPCD version: 1.2
<7> [192.405861] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0)
<7> [192.407001] [drm:drm_dp_dual_mode_detect] DP dual mode adaptor ID: a8 (err 0)
<7> [192.407119] [drm:lspcon_resume [i915]] LSPCON detected
<7> [192.408305] [drm:lspcon_wait_mode [i915]] Waiting for LSPCON mode PCON to settle
<7> [192.482620] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00200000, dig 0x10101011, pins 0x00000020, long 0x00000000
<7> [192.482770] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:94:DDI B] - short
<7> [192.483028] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:94:DDI B] - short
<7> [192.484530] i915 0000:00:02.0: [drm:intel_dp_lttpr_init [i915]] LTTPR common capabilities: 00 00 00 00 00 00 00 00
<7> [192.485585] [drm:lspcon_wait_mode [i915]] Current LSPCON mode PCON
<7> [192.517401] [drm:drm_dp_dpcd_access] AUX B/port B: Too many retries, giving up. First error: -5
<7> [192.518952] [drm:drm_dp_read_dpcd_caps] AUX B/port B: DPCD: 12 14 c4 01 01 15 01 81 02 01 04 01 0f 00 01
<7> [192.519428] [drm:drm_dp_read_dpcd_caps] AUX B/port B: DPCD: 12 14 c4 01 01 15 01 81 02 01 04 01 0f 00 01
<7> [192.521027] [drm:drm_dp_read_desc] AUX B/port B: DP branch: OUI 12-1c-f8 dev-ID 175IB0 HW-rev 1.0 SW-rev 7.32 quirks 0x0000
<3> [192.521154] [drm:lspcon_resume [i915]] *ERROR* Invalid/Unknown vendor OUI
<3> [192.521345] [drm:lspcon_resume [i915]] *ERROR* LSPCON vendor detection failed
<7> [192.521350] [drm:drm_dp_read_desc] AUX B/port B: DP branch: OUI 00-1c-f8 dev-ID 175IB0 HW-rev 1.0 SW-rev 7.32 quirks 0x0000
<3> [192.521471] [drm:intel_dp_detect [i915]] *ERROR* LSPCON init failed on port B
<7> [192.523321] i915 0000:00:02.0: [drm:intel_dp_lttpr_init [i915]] LTTPR common capabilities: 00 00 00 00 00 00 00 00