Many KMS tests - dmesg-warn/dmesg-fail - *ERROR* Timeout waiting for DDI BUF .* to get idle
<7> [343.377489] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [CRTC:182:pipe C] enable: no [modeset]
<7> [343.377535] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:133:plane 1C] fb: [NOFB], visible: no
<7> [343.377580] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:142:plane 2C] fb: [NOFB], visible: no
<7> [343.377625] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:151:plane 3C] fb: [NOFB], visible: no
<7> [343.377671] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:160:plane 4C] fb: [NOFB], visible: no
<7> [343.377716] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:169:plane 5C] fb: [NOFB], visible: no
<7> [343.377760] xe 0000:03:00.0: [drm:intel_crtc_state_dump [xe]] [PLANE:178:cursor C] fb: [NOFB], visible: no
<7> [343.378297] xe 0000:03:00.0: [drm:intel_power_well_enable [xe]] enabling PW_A
<7> [343.378389] xe 0000:03:00.0: [drm:intel_audio_codec_disable [xe]] [CONNECTOR:255:HDMI-A-6][ENCODER:254:DDI B/PHY B] Disable audio codec on [CRTC:131:pipe B]
<7> [343.409178] xe 0000:03:00.0: [drm:intel_disable_transcoder [xe]] disabling pipe B
<7> [343.429051] xe 0000:03:00.0: [drm:intel_power_well_disable [xe]] disabling DDI_IO_B
<7> [343.429215] xe 0000:03:00.0: [drm:intel_disable_transcoder [xe]] disabling pipe C
<3> [343.449299] xe 0000:03:00.0: [drm] *ERROR* Timeout waiting for DDI BUF C to get idle
<7> [343.449307] xe 0000:03:00.0: [drm:intel_power_well_disable [xe]] disabling DDI_IO_C
<7> [343.449377] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:235:DDI A/PHY A]
<7> [343.449426] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:237:DP-MST A]
<7> [343.449471] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:238:DP-MST B]
<7> [343.449515] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:239:DP-MST C]
<7> [343.449558] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:240:DP-MST D]
<7> [343.449601] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:254:DDI B/PHY B]
<7> [343.449643] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:258:DDI C/PHY C]
<7> [343.449687] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:260:DP-MST A]
<7> [343.449732] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:261:DP-MST B]
<7> [343.449776] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:262:DP-MST C]
<7> [343.449819] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:263:DP-MST D]
<7> [343.449862] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:270:DDI D/PHY D]
<7> [343.449906] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:272:DP-MST A]
<7> [343.449951] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:273:DP-MST B]
<7> [343.449994] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:274:DP-MST C]
<7> [343.450053] xe 0000:03:00.0: [drm:intel_modeset_verify_disabled [xe]] [ENCODER:275:DP-MST D]
<7> [343.450098] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:236:DP-3]
<7> [343.450149] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:248:HDMI-A-5]
<7> [343.450201] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:259:DP-4]
<7> [343.450251] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:267:HDMI-A-7]
<7> [343.450301] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:271:DP-5]
<7> [343.450350] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:279:HDMI-A-8]
<7> [343.450402] xe 0000:03:00.0: [drm:gen9_dbuf_slices_update [xe]] Updating dbuf slices to 0xf
<7> [343.450561] xe 0000:03:00.0: [drm:intel_power_well_enable [xe]] enabling DDI_IO_B
<7> [343.450672] xe 0000:03:00.0: [drm:intel_enable_transcoder [xe]] enabling pipe A
<7> [343.451796] xe 0000:03:00.0: [drm:intel_fbc_update [xe]] reserved 8847360 bytes of contiguous stolen space for FBC, limit: 1
<7> [343.451852] xe 0000:03:00.0: [drm:intel_fbc_update [xe]] Enabling FBC on [PLANE:31:plane 1A]
<7> [343.468316] xe 0000:03:00.0: [drm:gen9_dbuf_slices_update [xe]] Updating dbuf slices to 0x3
<7> [343.468553] xe 0000:03:00.0: [drm:intel_audio_codec_enable [xe]] [CONNECTOR:255:HDMI-A-6][ENCODER:254:DDI B/PHY B] Enable audio codec on [CRTC:80:pipe A], 36 bytes ELD
<7> [343.485043] xe 0000:03:00.0: [drm:audio_config_hdmi_pixel_clock [xe]] Configuring HDMI audio for pixel clock 148500 (0x00090000)
<7> [343.485305] xe 0000:03:00.0: [drm:hsw_audio_config_update [xe]] using automatic N
<7> [343.485715] xe 0000:03:00.0: [drm:verify_connector_state [xe]] [CONNECTOR:255:HDMI-A-6]
<7> [343.486058] xe 0000:03:00.0: [drm:intel_modeset_verify_crtc [xe]] [CRTC:80:pipe A]
<7> [343.486588] xe 0000:03:00.0: [drm:intel_power_well_disable [xe]] disabling PW_B
<7> [343.486967] xe 0000:03:00.0: [drm:intel_modeset_verify_crtc [xe]] [CRTC:131:pipe B]
<7> [343.487286] xe 0000:03:00.0: [drm:intel_power_well_disable [xe]] disabling PW_C
<7> [343.487626] xe 0000:03:00.0: [drm:intel_power_well_disable [xe]] disabling PW_2
<7> [343.487970] xe 0000:03:00.0: [drm:intel_modeset_verify_crtc [xe]] [CRTC:182:pipe C]
<7> [343.488348] xe 0000:03:00.0: [drm:i915_fifo_underrun_reset_write [xe]] Re-arming FIFO underruns on pipe A
<7> [343.585450] xe 0000:03:00.0: [drm:i915_fifo_underrun_reset_write [xe]] Re-arming FIFO underruns on pipe A
<7> [343.674933] xe 0000:03:00.0: [drm:intel_atomic_check [xe]] [CONNECTOR:267:HDMI-A-7] Limiting display bpp to 24 (EDID bpp 0, max requested bpp 36, max platform bpp 36)
<7> [343.674991] xe 0000:03:00.0: [drm:intel_hdmi_compute_clock [xe]] picking 8 bpc for HDMI output (pipe bpp: 24)
<7> [343.675045] xe 0000:03:00.0: [drm:intel_atomic_check [xe]] [CRTC:182:pipe C] hw max bpp: 24, pipe bpp: 24, dithering: 0