Re: DP1 Monitor Flashes

[Raul Dias <raul@xxxxxxxxxxx>]

I got this when the DP1 went to sleep mode on scenario (3):

------------------------------------------------ 8< ------------------------------------------------

[16031.915938] [drm:i915_driver_open], 

[16031.916651] [drm:i915_getparam], Unknown parameter 22

[16031.919833] [drm:i915_gem_context_create_ioctl], HW context 1 created

[16031.924433] [drm:i915_gem_context_destroy_ioctl], HW context 1 destroyed

[16032.479148] [drm:i915_driver_open], 

[16032.479696] [drm:i915_getparam], Unknown parameter 22

[16032.482869] [drm:i915_gem_context_create_ioctl], HW context 1 created

[16032.488433] [drm:i915_gem_context_create_ioctl], HW context 2 created

[16032.703555] [drm:i915_gem_context_create_ioctl], HW context 3 created

[16031.915938] [drm:i915_driver_open], 

[16031.916651] [drm:i915_getparam], Unknown parameter 22

[16031.919833] [drm:i915_gem_context_create_ioctl], HW context 1 created

[16031.924433] [drm:i915_gem_context_destroy_ioctl], HW context 1 destroyed

[16032.479148] [drm:i915_driver_open], 

[16032.479696] [drm:i915_getparam], Unknown parameter 22

[16032.482869] [drm:i915_gem_context_create_ioctl], HW context 1 created

[16032.488433] [drm:i915_gem_context_create_ioctl], HW context 2 created

[16032.703555] [drm:i915_gem_context_create_ioctl], HW context 3 created

[16236.444611] [drm:drm_mode_getconnector], [CONNECTOR:7:?]

[16236.444626] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:LVDS-1]

[16236.444655] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:LVDS-1] probed modes :

[16236.444660] [drm:drm_mode_debug_printmodeline], Modeline 23:"1920x1080" 60 142000 1920 1980 2028 2094 1080 1090 1100 1130 0x48 0x9

[16236.444672] [drm:drm_mode_getconnector], [CONNECTOR:7:?]

[16236.445002] [drm:drm_mode_getconnector], [CONNECTOR:14:?]

[16236.445008] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:VGA-1]

[16236.445015] [drm:intel_ironlake_crt_detect_hotplug], ironlake hotplug adpa=0xf40000, result 0

[16236.445020] [drm:intel_crt_detect], CRT not detected via hotplug

[16236.457851] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter i915 gmbus vga

[16236.457861] [drm:intel_crt_detect_ddc], CRT not detected via DDC:0x50 [no valid EDID found]

[16236.457868] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:VGA-1] disconnected

[16236.457922] [drm:drm_mode_getconnector], [CONNECTOR:17:?]

[16236.457932] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:17:HDMI-A-1]

[16236.465879] [drm:gmbus_xfer], GMBUS [i915 gmbus dpc] NAK for addr: 0050 r(1)

[16236.465890] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter i915 gmbus dpc

[16236.465897] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:17:HDMI-A-1] disconnected

[16236.465944] [drm:drm_mode_getconnector], [CONNECTOR:21:?]

[16236.465951] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:21:DP-1]

[16236.466273] [drm:intel_dp_detect], DPCD: 11 0a 84 01 01 00 01 00 02 02 06 00 00 00 00

[16236.467320] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.494763] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.522117] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.522126] [drm:drm_detect_monitor_audio], Monitor has basic audio support

[16236.523244] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.550636] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.578083] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16236.578219] [drm:drm_edid_to_eld], ELD monitor DELL U2713HM

[16236.578228] [drm:drm_edid_to_eld], ELD size 9, SAD count 1

[16236.578292] [drm:drm_mode_debug_printmodeline], Modeline 83:"1440x576i" 0 27000 1440 1464 1590 1728 576 580 586 625 0x40 0x101a

[16236.578300] [drm:drm_mode_prune_invalid], Not using 1440x576i mode 3

[16236.578305] [drm:drm_mode_debug_printmodeline], Modeline 80:"1440x480i" 0 27000 1440 1478 1602 1716 480 488 494 525 0x40 0x101a

[16236.578311] [drm:drm_mode_prune_invalid], Not using 1440x480i mode 3

[16236.578322] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:21:DP-1] probed modes :

[16236.578327] [drm:drm_mode_debug_printmodeline], Modeline 11:"2560x1440" 60 241500 2560 2608 2640 2720 1440 1443 1448 1481 0x48 0x9

[16236.578334] [drm:drm_mode_debug_printmodeline], Modeline 29:"1920x1200" 60 193250 1920 2056 2256 2592 1200 1203 1209 1245 0x40 0x6

[16236.578340] [drm:drm_mode_debug_printmodeline], Modeline 55:"1920x1080" 50 148500 1920 2448 2492 2640 1080 1084 1089 1125 0x40 0x5

[16236.578346] [drm:drm_mode_debug_printmodeline], Modeline 41:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x40 0x5

[16236.578351] [drm:drm_mode_debug_printmodeline], Modeline 22:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1082 1087 1125 0x40 0x5

[16236.578357] [drm:drm_mode_debug_printmodeline], Modeline 56:"1920x1080" 24 74250 1920 2558 2602 2750 1080 1084 1089 1125 0x40 0x5

[16236.578363] [drm:drm_mode_debug_printmodeline], Modeline 54:"1920x1080i" 50 74250 1920 2448 2492 2640 1080 1084 1094 1125 0x40 0x15

[16236.578369] [drm:drm_mode_debug_printmodeline], Modeline 42:"1920x1080i" 60 74250 1920 2008 2052 2200 1080 1084 1094 1125 0x40 0x15

[16236.578375] [drm:drm_mode_debug_printmodeline], Modeline 31:"1600x1200" 60 162000 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5

[16236.578381] [drm:drm_mode_debug_printmodeline], Modeline 28:"1680x1050" 60 146250 1680 1784 1960 2240 1050 1053 1059 1089 0x40 0x6

[16236.578387] [drm:drm_mode_debug_printmodeline], Modeline 37:"1280x1024" 75 135000 1280 1296 1440 1688 1024 1025 1028 1066 0x40 0x5

[16236.578393] [drm:drm_mode_debug_printmodeline], Modeline 32:"1280x1024" 60 108000 1280 1328 1440 1688 1024 1025 1028 1066 0x40 0x5

[16236.578398] [drm:drm_mode_debug_printmodeline], Modeline 27:"1280x800" 60 83500 1280 1352 1480 1680 800 803 809 831 0x40 0x9

[16236.578405] [drm:drm_mode_debug_printmodeline], Modeline 30:"1152x864" 75 108000 1152 1216 1344 1600 864 865 868 900 0x40 0x5

[16236.578411] [drm:drm_mode_debug_printmodeline], Modeline 53:"1280x720" 50 74250 1280 1720 1760 1980 720 725 730 750 0x40 0x5

[16236.578417] [drm:drm_mode_debug_printmodeline], Modeline 43:"1280x720" 60 74250 1280 1390 1430 1650 720 725 730 750 0x40 0x5

[16236.578422] [drm:drm_mode_debug_printmodeline], Modeline 38:"1024x768" 75 78800 1024 1040 1136 1312 768 769 772 800 0x40 0x5

[16236.578428] [drm:drm_mode_debug_printmodeline], Modeline 39:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa

[16236.578433] [drm:drm_mode_debug_printmodeline], Modeline 40:"800x600" 75 49500 800 816 896 1056 600 601 604 625 0x40 0x5

[16236.578440] [drm:drm_mode_debug_printmodeline], Modeline 33:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5

[16236.578445] [drm:drm_mode_debug_printmodeline], Modeline 51:"720x576" 50 27000 720 732 796 864 576 581 586 625 0x40 0xa

[16236.578451] [drm:drm_mode_debug_printmodeline], Modeline 45:"720x480" 60 27000 720 736 798 858 480 489 495 525 0x40 0xa

[16236.578457] [drm:drm_mode_debug_printmodeline], Modeline 34:"640x480" 75 31500 640 656 720 840 480 481 484 500 0x40 0xa

[16236.578463] [drm:drm_mode_debug_printmodeline], Modeline 35:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa

[16236.578468] [drm:drm_mode_debug_printmodeline], Modeline 48:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa

[16236.578474] [drm:drm_mode_debug_printmodeline], Modeline 36:"720x400" 70 28320 720 738 846 900 400 412 414 449 0x40 0x6

[16236.578556] [drm:drm_mode_getconnector], [CONNECTOR:21:?]

------------------------------------------------ >8 ------------------------------------------------

After 

     $xrandr --output DP1 --off

------------------------------------------------ 8< ------------------------------------------------

[16427.890836] [drm:drm_mode_getconnector], [CONNECTOR:7:?]

[16427.890851] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:LVDS-1]

[16427.890880] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:LVDS-1] probed modes :

[16427.890885] [drm:drm_mode_debug_printmodeline], Modeline 23:"1920x1080" 60 142000 1920 1980 2028 2094 1080 1090 1100 1130 0x48 0x9

[16427.890897] [drm:drm_mode_getconnector], [CONNECTOR:7:?]

[16427.891251] [drm:drm_mode_getconnector], [CONNECTOR:14:?]

[16427.891257] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:VGA-1]

[16427.891265] [drm:intel_ironlake_crt_detect_hotplug], ironlake hotplug adpa=0xf40000, result 0

[16427.891269] [drm:intel_crt_detect], CRT not detected via hotplug

[16427.906490] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter i915 gmbus vga

[16427.906499] [drm:intel_crt_detect_ddc], CRT not detected via DDC:0x50 [no valid EDID found]

[16427.906508] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:VGA-1] disconnected

[16427.906554] [drm:drm_mode_getconnector], [CONNECTOR:17:?]

[16427.906566] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:17:HDMI-A-1]

[16427.914490] [drm:gmbus_xfer], GMBUS [i915 gmbus dpc] NAK for addr: 0050 r(1)

[16427.914500] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter i915 gmbus dpc

[16427.914506] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:17:HDMI-A-1] disconnected

[16427.914552] [drm:drm_mode_getconnector], [CONNECTOR:21:?]

[16427.914559] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:21:DP-1]

[16427.914884] [drm:intel_dp_detect], DPCD: 11 0a 84 01 01 00 01 00 02 02 06 00 00 00 00

[16427.915930] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16427.943447] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16427.970847] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16427.970855] [drm:drm_detect_monitor_audio], Monitor has basic audio support

[16427.971915] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16427.999101] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16428.026517] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return 2

[16428.026611] [drm:drm_edid_to_eld], ELD monitor DELL U2713HM

[16428.026617] [drm:drm_edid_to_eld], ELD size 9, SAD count 1

[16428.026671] [drm:drm_mode_debug_printmodeline], Modeline 83:"1440x576i" 0 27000 1440 1464 1590 1728 576 580 586 625 0x40 0x101a

[16428.026674] [drm:drm_mode_prune_invalid], Not using 1440x576i mode 3

[16428.026675] [drm:drm_mode_debug_printmodeline], Modeline 80:"1440x480i" 0 27000 1440 1478 1602 1716 480 488 494 525 0x40 0x101a

[16428.026677] [drm:drm_mode_prune_invalid], Not using 1440x480i mode 3

[16428.026680] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:21:DP-1] probed modes :

[16428.026682] [drm:drm_mode_debug_printmodeline], Modeline 11:"2560x1440" 60 241500 2560 2608 2640 2720 1440 1443 1448 1481 0x48 0x9

[16428.026683] [drm:drm_mode_debug_printmodeline], Modeline 29:"1920x1200" 60 193250 1920 2056 2256 2592 1200 1203 1209 1245 0x40 0x6

[16428.026685] [drm:drm_mode_debug_printmodeline], Modeline 55:"1920x1080" 50 148500 1920 2448 2492 2640 1080 1084 1089 1125 0x40 0x5

[16428.026687] [drm:drm_mode_debug_printmodeline], Modeline 41:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x40 0x5

[16428.026688] [drm:drm_mode_debug_printmodeline], Modeline 22:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1082 1087 1125 0x40 0x5

[16428.026691] [drm:drm_mode_debug_printmodeline], Modeline 56:"1920x1080" 24 74250 1920 2558 2602 2750 1080 1084 1089 1125 0x40 0x5

[16428.026692] [drm:drm_mode_debug_printmodeline], Modeline 54:"1920x1080i" 50 74250 1920 2448 2492 2640 1080 1084 1094 1125 0x40 0x15

[16428.026694] [drm:drm_mode_debug_printmodeline], Modeline 42:"1920x1080i" 60 74250 1920 2008 2052 2200 1080 1084 1094 1125 0x40 0x15

[16428.026696] [drm:drm_mode_debug_printmodeline], Modeline 31:"1600x1200" 60 162000 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5

[16428.026697] [drm:drm_mode_debug_printmodeline], Modeline 28:"1680x1050" 60 146250 1680 1784 1960 2240 1050 1053 1059 1089 0x40 0x6

[16428.026699] [drm:drm_mode_debug_printmodeline], Modeline 37:"1280x1024" 75 135000 1280 1296 1440 1688 1024 1025 1028 1066 0x40 0x5

[16428.026700] [drm:drm_mode_debug_printmodeline], Modeline 32:"1280x1024" 60 108000 1280 1328 1440 1688 1024 1025 1028 1066 0x40 0x5

[16428.026702] [drm:drm_mode_debug_printmodeline], Modeline 27:"1280x800" 60 83500 1280 1352 1480 1680 800 803 809 831 0x40 0x9

[16428.026704] [drm:drm_mode_debug_printmodeline], Modeline 30:"1152x864" 75 108000 1152 1216 1344 1600 864 865 868 900 0x40 0x5

[16428.026705] [drm:drm_mode_debug_printmodeline], Modeline 53:"1280x720" 50 74250 1280 1720 1760 1980 720 725 730 750 0x40 0x5

[16428.026707] [drm:drm_mode_debug_printmodeline], Modeline 43:"1280x720" 60 74250 1280 1390 1430 1650 720 725 730 750 0x40 0x5

[16428.026709] [drm:drm_mode_debug_printmodeline], Modeline 38:"1024x768" 75 78800 1024 1040 1136 1312 768 769 772 800 0x40 0x5

[16428.026710] [drm:drm_mode_debug_printmodeline], Modeline 39:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa

[16428.026712] [drm:drm_mode_debug_printmodeline], Modeline 40:"800x600" 75 49500 800 816 896 1056 600 601 604 625 0x40 0x5

[16428.026714] [drm:drm_mode_debug_printmodeline], Modeline 33:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5

[16428.026715] [drm:drm_mode_debug_printmodeline], Modeline 51:"720x576" 50 27000 720 732 796 864 576 581 586 625 0x40 0xa

[16428.026717] [drm:drm_mode_debug_printmodeline], Modeline 45:"720x480" 60 27000 720 736 798 858 480 489 495 525 0x40 0xa

[16428.026719] [drm:drm_mode_debug_printmodeline], Modeline 34:"640x480" 75 31500 640 656 720 840 480 481 484 500 0x40 0xa

[16428.026720] [drm:drm_mode_debug_printmodeline], Modeline 35:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa

[16428.026722] [drm:drm_mode_debug_printmodeline], Modeline 48:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa

[16428.026724] [drm:drm_mode_debug_printmodeline], Modeline 36:"720x400" 70 28320 720 738 846 900 400 412 414 449 0x40 0x6

[16428.026754] [drm:drm_mode_getconnector], [CONNECTOR:21:?]

[16428.031681] [drm:intel_panel_actually_set_backlight], set backlight PWM = 0

[16428.031721] [drm:drm_mode_setcrtc], [CRTC:3]

[16428.031724] [drm:intel_crtc_set_config], [CRTC:3] [NOFB]

[16428.031729] [drm:intel_modeset_stage_output_state], [CONNECTOR:7:LVDS-1] to [NOCRTC]

[16428.031731] [drm:intel_modeset_stage_output_state], encoder changed, full mode switch

[16428.031733] [drm:intel_modeset_stage_output_state], [CONNECTOR:21:DP-1] to [CRTC:5]

[16428.031736] [drm:intel_modeset_stage_output_state], crtc changed, full mode switch

[16428.031738] [drm:intel_set_mode], set mode pipe masks: modeset: 0, prepare: 0, disable: 1

[16428.031747] [drm:intel_panel_actually_set_backlight], set backlight PWM = 0

[16428.422412] [drm:intel_disable_pch_pll], disable PCH PLL c6014 (active 1, on? 1) for crtc 3

[16428.422426] [drm:intel_disable_pch_pll], disabling PCH PLL c6014

[16428.422841] [drm:sandybridge_update_wm], FIFO watermarks For pipe B - plane 13, cursor: 6

[16428.422847] [drm:ironlake_check_srwm], watermark 1: display plane 25, fbc lines 3, cursor 6

[16428.422853] [drm:ironlake_check_srwm], watermark 2: display plane 33, fbc lines 3, cursor 6

[16428.422858] [drm:ironlake_check_srwm], watermark 3: display plane 169, fbc lines 4, cursor 10

[16428.422864] [drm:intel_update_fbc], fbc set to per-chip default

[16428.422867] [drm:intel_update_fbc], fbc disabled per module param

[16428.422892] [drm:intel_connector_check_state], [CONNECTOR:21:DP-1]

[16428.422901] [drm:intel_modeset_check_state], [ENCODER:8:LVDS-8]

[16428.422907] [drm:intel_modeset_check_state], [ENCODER:15:DAC-15]

[16428.422913] [drm:intel_modeset_check_state], [ENCODER:16:TMDS-16]

[16428.422918] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]

[16428.422926] [drm:intel_modeset_check_state], [CRTC:3]

[16428.422930] [drm:intel_modeset_check_state], [CRTC:5]

[16428.424485] [drm:drm_mode_setcrtc], [CRTC:5]

[16428.424494] [drm:intel_crtc_set_config], [CRTC:5] [NOFB]

[16428.424504] [drm:intel_modeset_stage_output_state], [CONNECTOR:21:DP-1] to [NOCRTC]

[16428.424509] [drm:intel_modeset_stage_output_state], encoder changed, full mode switch

[16428.424515] [drm:intel_modeset_stage_output_state], crtc changed, full mode switch

[16428.424522] [drm:intel_set_mode], set mode pipe masks: modeset: 0, prepare: 0, disable: 2

[16428.424760] [drm:intel_dp_link_down], 

[16428.498433] [drm:intel_disable_pch_pll], disable PCH PLL c6018 (active 1, on? 1) for crtc 5

[16428.498446] [drm:intel_disable_pch_pll], disabling PCH PLL c6018

[16428.498862] [drm:intel_update_fbc], no output, disabling

[16428.498884] [drm:intel_modeset_check_state], [ENCODER:8:LVDS-8]

[16428.498891] [drm:intel_modeset_check_state], [ENCODER:15:DAC-15]

[16428.498897] [drm:intel_modeset_check_state], [ENCODER:16:TMDS-16]

[16428.498902] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]

[16428.498907] [drm:intel_modeset_check_state], [CRTC:3]

[16428.498911] [drm:intel_modeset_check_state], [CRTC:5]

[16428.503552] [drm:drm_mode_addfb], [FB:44]

[16428.503557] [drm:drm_mode_setcrtc], [CRTC:3]

[16428.503562] [drm:drm_mode_setcrtc], [CONNECTOR:7:LVDS-1]

[16428.503564] [drm:intel_crtc_set_config], [CRTC:3] [FB:44] #connectors=1 (x y) (0 0)

[16428.503567] [drm:intel_set_config_compute_mode_changes], crtc has no fb, full mode set

[16428.503569] [drm:intel_modeset_stage_output_state], encoder changed, full mode switch

[16428.503571] [drm:intel_modeset_stage_output_state], [CONNECTOR:7:LVDS-1] to [CRTC:3]

[16428.503573] [drm:intel_modeset_stage_output_state], crtc changed, full mode switch

[16428.503575] [drm:intel_crtc_set_config], attempting to set mode from userspace

[16428.503576] [drm:drm_mode_debug_printmodeline], Modeline 46:"" 0 142000 1920 1980 2028 2094 1080 1090 1100 1130 0x0 0x9

[16428.503580] [drm:intel_set_mode], set mode pipe masks: modeset: 1, prepare: 1, disable: 0

[16428.503583] [drm:intel_modeset_adjusted_mode], [CRTC:3]

[16428.503588] [drm:ironlake_get_refclk], using SSC reference clock of 120 MHz

[16428.503615] [drm:intel_choose_pipe_bpp_dither], clamping display bpc (was -1) to LVDS (6)

[16428.503616] [drm:intel_choose_pipe_bpp_dither], setting pipe bpc to 8 (max display bpc 6)

[16428.503620] [drm:ironlake_crtc_mode_set], Mode for pipe 0:

[16428.503622] [drm:drm_mode_debug_printmodeline], Modeline 46:"" 0 142000 1920 1980 2028 2094 1080 1090 1100 1130 0x0 0x9

[16428.503625] [drm:intel_get_pch_pll], CRTC:3 allocated PCH PLL c6014

[16428.503626] [drm:intel_get_pch_pll], using pll 0 for pipe 0

[16428.503628] [drm:intel_get_pch_pll], switching PLL c6014 off

[16428.503942] [drm:ironlake_check_fdi_lanes], checking fdi config on pipe 0, lanes 2

[16428.558327] [drm:ironlake_wait_for_vblank], vblank wait timed out

[16428.573429] [drm:ironlake_update_plane], Writing base 073F1000 00000000 0 0 12800

[16428.573440] [drm:intel_update_fbc], no output, disabling

[16428.573450] [drm:intel_crtc_mode_set], [ENCODER:8:LVDS-8] set [MODE:46:]

[16428.573458] [drm:sandybridge_update_wm], FIFO watermarks For pipe A - plane 9, cursor: 6

[16428.573464] [drm:ironlake_check_srwm], watermark 1: display plane 16, fbc lines 3, cursor 6

[16428.573470] [drm:ironlake_check_srwm], watermark 2: display plane 20, fbc lines 3, cursor 6

[16428.573474] [drm:ironlake_check_srwm], watermark 3: display plane 100, fbc lines 3, cursor 6

[16428.626340] [drm:ironlake_wait_for_vblank], vblank wait timed out

[16428.682378] [drm:ironlake_wait_for_vblank], vblank wait timed out

[16428.683199] [drm:gen6_fdi_link_train], FDI_RX_IIR 0x100

[16428.683206] [drm:gen6_fdi_link_train], FDI train 1 done.

[16428.683861] [drm:gen6_fdi_link_train], FDI_RX_IIR 0x600

[16428.683865] [drm:gen6_fdi_link_train], FDI train 2 done.

[16428.683868] [drm:gen6_fdi_link_train], FDI train done.

[16428.683872] [drm:ironlake_enable_pch_pll], enable PCH PLL c6014 (active 0, on? 0)for crtc 3

[16428.683879] [drm:ironlake_enable_pch_pll], enabling PCH PLL c6014

[16428.685104] [drm:intel_update_fbc], fbc set to per-chip default

[16428.685107] [drm:intel_update_fbc], fbc disabled per module param

[16428.882262] [drm:intel_panel_get_max_backlight], max backlight PWM = 4648

[16428.882278] [drm:intel_panel_actually_set_backlight], set backlight PWM = 4648

[16428.890255] [drm:intel_connector_check_state], [CONNECTOR:7:LVDS-1]

[16428.890275] [drm:intel_modeset_check_state], [ENCODER:8:LVDS-8]

[16428.890282] [drm:intel_modeset_check_state], [ENCODER:15:DAC-15]

[16428.890288] [drm:intel_modeset_check_state], [ENCODER:16:TMDS-16]

[16428.890294] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]

[16428.890299] [drm:intel_modeset_check_state], [CRTC:3]

[16428.890304] [drm:intel_modeset_check_state], [CRTC:5]

[16428.890441] [drm:intel_panel_actually_set_backlight], set backlight PWM = 4648

------------------------------------------------ >8 ------------------------------------------------

2013/12/11 Raul Dias <raul@xxxxxxxxxxx>

I will put into a few scenarios:

1 - LVDS1 + DP1

Dell U2713HM using a Display Port cable (display) to a Mini Display Port (Notebook).

No adapters.

This is where the logs belongs to.

Some random  time after boot (15min, 1hour), the DP1 screen will blank for a period between 2s to 5s and come back again.

This will keep repeating for 5 to 15 min endless.

2 - LVDS1 + HDMI1

In this case, the U2713M display is using the HDMI port and a HDMI do mini Display Port adapter.

I can get the 2560x1440 resolution only if I lower the frequence to 41hz or lower (which I believe is a HDMI limitation).

No problem at all.

3 - LVDS1 + DP1 + VIRTUAL2

Same as (1) with and extra screen on bumblebee: intel-virtual-output -b

This time the U2713M display enters in sleep mode instead of blanking and does not come back (by itself).

I believe this is the same trigger from (1), but for some reason it is not just blanking.

To revert this, I have to use xrandr to turn the display off and on (--auto).

4 - LVDS1 + HDMI1 + VIRTUAL2

Same as (2) with bumblebee.

No problem at all too.

I am not sure if this could be a faulty display or cable if not the driver. (or how to detect it).

Thanks again.

-rsd

2013/12/11 Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>

On Tue, 10 Dec 2013, Raul Dias <raul@xxxxxxxxxxx> wrote:
> Hello,
>

> The dmesg for the boot is this:
> http://pastebin.com/aXJQiprL

I was hoping for the dmesg from the start (which lets me check the
kernel command line and i915 initialization).

> The dmesg when the flashing started to occur:
> http://pastebin.com/GkRcpK80

I don't see anything particularly wrong with that. There's the
occasional dimming of the backlight - that's not what you're referring
to is it?

Could you describe the problem a bit more please?

BR,
Jani.

> I kept the config a simple as possible.  No bumblebee, just LVDS1 and DP1
> without adaptors.
>
> my Xorg.0.log is this:
> http://pastebin.com/2vK37TNr
>
>
>
> Thanks!
> -rsd
>
>
> 2013/12/10 Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
>
>> On Mon, 09 Dec 2013, Raul Dias <raul@xxxxxxxxxxx> wrote:
>> > Hello,
>> >
>> > I have a Dell L502x which have a optimus Graphic Pack:
>> >
>> > 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
>> > Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
>> > controller])
>> >         Subsystem: Dell Device 050e
>> >         Flags: bus master, fast devsel, latency 0, IRQ 51
>> >         Memory at f1400000 (64-bit, non-prefetchable) [size=4M]
>> >         Memory at e0000000 (64-bit, prefetchable) [size=256M]
>> >         I/O ports at 4000 [size=64]
>> >         Expansion ROM at <unassigned> [disabled]
>> >         Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
>> >         Capabilities: [d0] Power Management version 2
>> >         Capabilities: [a4] PCI Advanced Features
>> >         Kernel driver in use: i915
>> >
>> >
>> > Using driver:
>> >          2.99.905+git20131023.b70390b4
>> >
>> > When I use a DELL U2713HM Monitor on the DisplayPort,  it will flash
>> blank
>> > for 5 seconds in a 10 minutes interval.
>> > The monitor is at 2560x1440 (60hz).
>> >
>> > This is not ideal, but I can live with.
>> >
>> >
>> > The big problem is when using bumblebee with intel-virtual-output -b.
>> >
>> > In this case the monitor will enter in energy save state instead.
>> >
>> > The only way back is to turn it off and on with xrandr:
>> >
>> >      xrandr --output DP1 --off
>> >      xrandr --output DP1 --auto
>> >
>> > The odd thing is if I use instead a Mini DisplayPort  adapter to a Dual
>> DVI
>> > output, this problem will not happen.
>> >
>> > The downside of this solution is that I will need to add a new mode at
>> 41hz
>> > with:
>> >
>> >      xrandr --newmode "2560x1440_41"    162.00 2560 2608 2640 2720 1440
>> > 1443 1448 1468 +hsync +vsync
>> >
>> >
>> > So, What I am looking at is the source of the problem:
>> >
>> > If the source of the problem is the driver, which debug information
>> should
>> > I provide?
>>
>> Please provide dmesg with drm.debug=0xe module parameter from early boot
>> to the problem. If the problem takes a long time to reproduce, you can
>> provide two dmesgs, one from early boot and another covering the
>> problem.
>>
>> BR,
>> Jani.
>>
>>
>> >
>> > Or is it a problem with the DP of the monitor?
>> >
>> > Or a problem with the Display Card?
>> >
>> > Or should I lower the frequency in the DisplayPort (as with the DVI)?
>> >
>> >
>> > thanks
>> > -rsd
>> > _______________________________________________
>> > Intel-gfx mailing list
>> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
>> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>>
>> --
>> Jani Nikula, Intel Open Source Technology Center
>>

--
Jani Nikula, Intel Open Source Technology Center

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