Re: screen goes blank when loading gma500_gfx (atom D2500)

From: Michael Tokarev
Date: Sat Apr 05 2014 - 04:16:17 EST

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Hello again

It's been about 2 months since I sent the original debugging output. Today I tried
out 3.14 kernel. And this one behaves quite similarly, screen goes blank right
when loading gma500_gfx module. Here's the dmesg from a freshly booted system
after doing

modprobe drm debug=6
modprobe gma500_gfx

with a monitor connected to VGA port (before loading gma500_gfx, it displays the
regular text console):

[ 39.863330] Linux agpgart interface v0.103
[ 39.900511] [drm] Initialized drm 1.1.0 20060810
[ 45.012300] [drm:psb_intel_opregion_setup], Public ACPI methods supported
[ 45.012308] [drm:psb_intel_opregion_setup], ASLE supported
[ 45.012345] gma500 0000:00:02.0: irq 50 for MSI/MSI-X
[ 45.012371] [drm:psb_intel_init_bios], Using VBT from OpRegion: $VBT CEDARVIEW d
[ 45.012384] [drm:drm_mode_debug_printmodeline], Modeline 0:"1920x1080" 0 144000 1920 2016 2080 2176 1080 1088 1092 1100 0x8 0xa
[ 45.012389] [drm:parse_sdvo_device_mapping], No SDVO device info is found in VBT
[ 45.012397] [drm:parse_edp], EDP timing in vbt t1_t3 2000 t8 10 t9 2000 t10 500 t11_t12 5000
[ 45.012401] [drm:parse_edp], VBT reports EDP: Lane_count 1, Lane_rate 6, Bpp 24
[ 45.012405] [drm:parse_edp], VBT reports EDP: VSwing 0, Preemph 0
[ 45.012478] gma500 0000:00:02.0: GPU: power management timed out.
[ 45.026195] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 45.026891] acpi device:29: registered as cooling_device2
[ 45.027104] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input11
[ 45.027681] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 45.027726] [drm] No driver support for vblank timestamp query.
[ 45.078928] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm LVDSDDC_C
[ 45.079839] [drm:cdv_intel_dp_i2c_init], i2c_init DPDDC-B
[ 45.080383] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
[ 45.080388] [drm:cdv_intel_dp_i2c_aux_ch], aux_ch failed -110
[ 45.080896] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
[ 45.080899] [drm:cdv_intel_dp_i2c_aux_ch], aux_ch failed -110
[ 45.081754] [drm:cdv_intel_dp_i2c_init], i2c_init DPDDC-C
[ 45.082062] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.082272] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.122742] [drm:cdv_intel_single_pipe_active], pipe enabled 0
[ 45.142780] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 1
[ 45.142826] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 1
[ 45.183207] [drm:cdv_intel_single_pipe_active], pipe enabled 0
[ 45.203249] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:VGA-1]
[ 45.332286] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:VGA-1] probed modes :
[ 45.332297] [drm:drm_mode_debug_printmodeline], Modeline 23:"1280x1024" 60 108000 1280 1328 1440 1688 1024 1025 1028 1066 0x48 0x5
[ 45.332304] [drm:drm_mode_debug_printmodeline], Modeline 33:"1280x1024" 75 135000 1280 1296 1440 1688 1024 1025 1028 1066 0x40 0x5
[ 45.332311] [drm:drm_mode_debug_printmodeline], Modeline 26:"1280x1024" 72 132840 1280 1368 1504 1728 1024 1025 1028 1067 0x0 0x6
[ 45.332318] [drm:drm_mode_debug_printmodeline], Modeline 25:"1152x864" 75 108000 1152 1216 1344 1600 864 865 868 900 0x40 0x5
[ 45.332325] [drm:drm_mode_debug_printmodeline], Modeline 34:"1024x768" 75 78800 1024 1040 1136 1312 768 769 772 800 0x40 0x5
[ 45.332332] [drm:drm_mode_debug_printmodeline], Modeline 35:"1024x768" 70 75000 1024 1048 1184 1328 768 771 777 806 0x40 0xa
[ 45.332338] [drm:drm_mode_debug_printmodeline], Modeline 36:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
[ 45.332345] [drm:drm_mode_debug_printmodeline], Modeline 37:"832x624" 75 57284 832 864 928 1152 624 625 628 667 0x40 0xa
[ 45.332352] [drm:drm_mode_debug_printmodeline], Modeline 38:"800x600" 75 49500 800 816 896 1056 600 601 604 625 0x40 0x5
[ 45.332359] [drm:drm_mode_debug_printmodeline], Modeline 39:"800x600" 72 50000 800 856 976 1040 600 637 643 666 0x40 0x5
[ 45.332365] [drm:drm_mode_debug_printmodeline], Modeline 27:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
[ 45.332372] [drm:drm_mode_debug_printmodeline], Modeline 28:"640x480" 75 31500 640 656 720 840 480 481 484 500 0x40 0xa
[ 45.332379] [drm:drm_mode_debug_printmodeline], Modeline 29:"640x480" 73 31500 640 664 704 832 480 489 491 520 0x40 0xa
[ 45.332385] [drm:drm_mode_debug_printmodeline], Modeline 30:"640x480" 67 30240 640 704 768 864 480 483 486 525 0x40 0xa
[ 45.332392] [drm:drm_mode_debug_printmodeline], Modeline 31:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa
[ 45.332398] [drm:drm_mode_debug_printmodeline], Modeline 32:"720x400" 70 28320 720 738 846 900 400 412 414 449 0x40 0x6
[ 45.332405] [drm:drm_mode_debug_printmodeline], Modeline 24:"640x350" 70 25170 640 656 752 800 350 387 389 449 0x40 0x9
[ 45.332411] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:9:LVDS-1]
[ 45.336961] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm LVDSBLC_B
[ 45.336970] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:9:LVDS-1] probed modes :
[ 45.336977] [drm:drm_mode_debug_printmodeline], Modeline 40:"1920x1080" 60 144000 1920 2016 2080 2176 1080 1088 1092 1100 0x8 0xa
[ 45.336982] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:12:DVI-D-1]
[ 45.341442] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIB
[ 45.341448] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:12:DVI-D-1] disconnected
[ 45.341453] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:DP-1]
[ 45.341961] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
[ 45.341966] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:DP-1] disconnected
[ 45.341971] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:18:DVI-D-2]
[ 45.346467] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIC
[ 45.346474] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:18:DVI-D-2] disconnected
[ 45.346479] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:20:DP-2]
[ 45.346686] [drm:cdv_dp_detect], DPCD: Rev=11 LN_Rate=a LN_CNT=82 LN_DOWNSP=41
[ 45.346993] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.347199] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.347202] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.347508] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.347713] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.347717] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.348022] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.348227] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.348231] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.348537] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.348742] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.348745] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.349051] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.349257] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.349261] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.349568] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.349773] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.349776] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.350082] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.350288] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.350291] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.350598] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.350804] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.350807] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.351114] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.351319] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.351322] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.351628] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.351833] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
[ 45.351836] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[ 45.351854] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:20:DP-2] probed modes :
[ 45.351861] [drm:drm_mode_debug_printmodeline], Modeline 45:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
[ 45.351867] [drm:drm_mode_debug_printmodeline], Modeline 43:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
[ 45.351874] [drm:drm_mode_debug_printmodeline], Modeline 42:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
[ 45.351881] [drm:drm_mode_debug_printmodeline], Modeline 44:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
[ 45.351888] [drm:drm_mode_debug_printmodeline], Modeline 41:"640x480" 60 25175 640 656 752 800 480 489 492 525 0x40 0xa
[ 45.351892] [drm:drm_setup_crtcs],
[ 45.351897] [drm:drm_enable_connectors], connector 7 enabled? yes
[ 45.351901] [drm:drm_enable_connectors], connector 9 enabled? yes
[ 45.351904] [drm:drm_enable_connectors], connector 12 enabled? no
[ 45.351908] [drm:drm_enable_connectors], connector 14 enabled? no
[ 45.351912] [drm:drm_enable_connectors], connector 18 enabled? no
[ 45.351916] [drm:drm_enable_connectors], connector 20 enabled? yes
[ 45.351920] [drm:drm_target_preferred], looking for cmdline mode on connector 7
[ 45.351924] [drm:drm_target_preferred], looking for preferred mode on connector 7
[ 45.351927] [drm:drm_target_preferred], found mode 1280x1024
[ 45.351931] [drm:drm_target_preferred], looking for cmdline mode on connector 9
[ 45.351935] [drm:drm_target_preferred], looking for preferred mode on connector 9
[ 45.351938] [drm:drm_target_preferred], found mode 1920x1080
[ 45.351942] [drm:drm_target_preferred], looking for cmdline mode on connector 20
[ 45.351945] [drm:drm_target_preferred], looking for preferred mode on connector 20
[ 45.351949] [drm:drm_target_preferred], found mode 1024x768
[ 45.351953] [drm:drm_setup_crtcs], picking CRTCs for 4096x4096 config
[ 45.351962] [drm:drm_setup_crtcs], desired mode 1280x1024 set on crtc 3
[ 45.351967] [drm:drm_setup_crtcs], desired mode 1920x1080 set on crtc 4
[ 45.351987] [drm] Initialized gma500 1.0.0 2011-06-06 for 0000:00:02.0 on minor 0

Thank you!

/mjt

15.02.2014 22:28, Michael Tokarev wrote:
> 10.02.2014 14:44, One Thousand Gnomes wrote:
>>> fbcon is loaded so it isn't an issue.
>>>
>>> I tried 3.10 kernel initially (the above messages are from it), next
>>> I tried 3.13 kernel too, and that one behaves exactly the same.
>>>
>>> As far as I remember, this system never worked with graphics well.
>>> Previous kernel (from which I updated) was 3.2 which had no
>>> gma500 module (local build).
>>>
>>> What are the steps to debug this further?
>>
>> Check you have X86_SYSFB and SIMPLEFB disabled
>
> Neither of these options exists in 3.10 config. In 3.13 I had X86_SYSFB set
> to y initially (SIMPLEFB doesn't exist there too), but setting it to n does
> not make any difference.
>
>> Boot with drm.debug=6
>>
>> collect the logs
>
> I used `modprobe drm debug=6' (initially booting with gma500_gfx module
> disabled), followed with `modprobe gma500_gfx'. After loading module
> the screen goes blank as before, and monitor says 'no signal detected'.
>
> Here are the logs:
>
> [599286.739923] Linux agpgart interface v0.103
> [599286.765176] [drm] Initialized drm 1.1.0 20060810
> [599303.673734] gma500 0000:00:02.0: setting latency timer to 64
> [599303.673883] [drm:psb_intel_opregion_setup], Public ACPI methods supported
> [599303.673887] [drm:psb_intel_opregion_setup], ASLE supported
> [599303.673923] gma500 0000:00:02.0: irq 50 for MSI/MSI-X
> [599303.673950] [drm:psb_intel_init_bios], Using VBT from OpRegion: $VBT CEDARVIEW d
> [599303.673959] [drm:drm_mode_debug_printmodeline], Modeline 0:"1920x1080" 0 144000 1920 2016 2080 2176 1080 1088 1092 1100 0x8 0xa
> [599303.673969] [drm:parse_sdvo_device_mapping], No SDVO device info is found in VBT
> [599303.673975] [drm:parse_edp], EDP timing in vbt t1_t3 2000 t8 10 t9 2000 t10 500 t11_t12 5000
> [599303.673980] [drm:parse_edp], VBT reports EDP: Lane_count 1, Lane_rate 6, Bpp 24
> [599303.673984] [drm:parse_edp], VBT reports EDP: VSwing 0, Preemph 0
> [599303.688094] acpi device:29: registered as cooling_device2
> [599303.688446] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
> [599303.688557] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input11
> [599303.689160] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> [599303.689188] [drm] No driver support for vblank timestamp query.
> [599303.740423] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm LVDSDDC_C
> [599303.741222] [drm:cdv_intel_dp_i2c_init], i2c_init DPDDC-B
> [599303.741732] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
> [599303.741736] [drm:cdv_intel_dp_i2c_aux_ch], aux_ch failed -110
> [599303.742242] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
> [599303.742246] [drm:cdv_intel_dp_i2c_aux_ch], aux_ch failed -110
> [599303.742997] [drm:cdv_intel_dp_i2c_init], i2c_init DPDDC-C
> [599303.743305] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.743510] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.783922] [drm:cdv_intel_single_pipe_active], pipe enabled 0
> [599303.803958] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 1
> [599303.803996] gma500 0000:00:02.0: trying to get vblank count for disabled pipe 1
> [599303.844370] [drm:cdv_intel_single_pipe_active], pipe enabled 0
> [599303.864408] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:VGA-1]
> [599303.877172] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:7:VGA-1] disconnected
> [599303.877184] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:9:LVDS-1]
> [599303.881764] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm LVDSBLC_B
> [599303.881778] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:9:LVDS-1] probed modes :
> [599303.881783] [drm:drm_mode_debug_printmodeline], Modeline 22:"1920x1080" 60 144000 1920 2016 2080 2176 1080 1088 1092 1100 0x8 0xa
> [599303.881791] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:12:DVI-D-1]
> [599303.886292] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIB
> [599303.886298] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:12:DVI-D-1] disconnected
> [599303.886304] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:DP-1]
> [599303.886811] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
> [599303.886815] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:14:DP-1] disconnected
> [599303.886820] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:18:DVI-D-2]
> [599303.891350] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIC
> [599303.891357] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:18:DVI-D-2] disconnected
> [599303.891362] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:20:DP-2]
> [599303.891569] [drm:cdv_dp_detect], DPCD: Rev=11 LN_Rate=a LN_CNT=82 LN_DOWNSP=41
> [599303.891876] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.892082] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.892085] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.892391] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.892595] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.892598] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.892904] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.893109] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.893112] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.893417] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.893622] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.893625] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.893944] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.894151] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.894154] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.894460] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.894665] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.894669] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.894975] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.895180] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.895183] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.895489] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.895694] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.895697] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.896002] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.896207] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.896210] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.896515] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.896720] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599303.896723] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599303.896741] [drm:drm_helper_probe_single_connector_modes], [CONNECTOR:20:DP-2] probed modes :
> [599303.896745] [drm:drm_mode_debug_printmodeline], Modeline 27:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
> [599303.896752] [drm:drm_mode_debug_printmodeline], Modeline 25:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
> [599303.896759] [drm:drm_mode_debug_printmodeline], Modeline 24:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
> [599303.896766] [drm:drm_mode_debug_printmodeline], Modeline 26:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
> [599303.896773] [drm:drm_mode_debug_printmodeline], Modeline 23:"640x480" 60 25175 640 656 752 800 480 489 492 525 0x40 0xa
> [599303.896780] [drm:drm_setup_crtcs],
> [599303.896785] [drm:drm_enable_connectors], connector 7 enabled? no
> [599303.896789] [drm:drm_enable_connectors], connector 9 enabled? yes
> [599303.896792] [drm:drm_enable_connectors], connector 12 enabled? no
> [599303.896796] [drm:drm_enable_connectors], connector 14 enabled? no
> [599303.896800] [drm:drm_enable_connectors], connector 18 enabled? no
> [599303.896803] [drm:drm_enable_connectors], connector 20 enabled? yes
> [599303.896807] [drm:drm_target_preferred], looking for cmdline mode on connector 9
> [599303.896811] [drm:drm_target_preferred], looking for preferred mode on connector 9
> [599303.896815] [drm:drm_target_preferred], found mode 1920x1080
> [599303.896818] [drm:drm_target_preferred], looking for cmdline mode on connector 20
> [599303.896821] [drm:drm_target_preferred], looking for preferred mode on connector 20
> [599303.896825] [drm:drm_target_preferred], found mode 1024x768
> [599303.896828] [drm:drm_setup_crtcs], picking CRTCs for 4096x4096 config
> [599303.896836] [drm:drm_setup_crtcs], desired mode 1920x1080 set on crtc 4
> [599303.896841] [drm:drm_setup_crtcs], desired mode 1024x768 set on crtc 3
> [599303.896862] [drm] Initialized gma500 1.0.0 2011-06-06 for 0000:00:02.0 on minor 0
> [599546.148642] [drm:drm_helper_hpd_irq_event], [CONNECTOR:7:VGA-1] status updated from disconnected to connected
> [599546.153261] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIB
> [599546.153270] [drm:drm_helper_hpd_irq_event], [CONNECTOR:12:DVI-D-1] status updated from disconnected to disconnected
> [599546.153779] [drm:cdv_intel_dp_aux_ch], dp_aux_ch timeout status 0x51440064
> [599546.153783] [drm:drm_helper_hpd_irq_event], [CONNECTOR:14:DP-1] status updated from disconnected to disconnected
> [599546.158258] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter intel drm HDMIC
> [599546.158264] [drm:drm_helper_hpd_irq_event], [CONNECTOR:18:DVI-D-2] status updated from disconnected to disconnected
> [599546.158471] [drm:cdv_dp_detect], DPCD: Rev=11 LN_Rate=a LN_CNT=82 LN_DOWNSP=41
> [599546.158780] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.158987] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.158991] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599546.159297] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.159502] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.159505] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599546.159810] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.160015] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.160018] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599546.160324] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.160528] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
> [599546.160531] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
> [599546.160843] [drm:cdv_intel_dp_i2c_aux_ch], aux_i2c nack
>
> This is 3.10.29, monitor is connected to VGA connector.
>
> Thank you!
>
> /mjt

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