[Intel-gfx] debugging Haswell eDP black screen after S3

Ben Guthro ben at guthro.net
Thu May 16 15:24:05 CEST 2013


On Wed, May 15, 2013 at 4:42 PM, Ben Guthro <ben at guthro.net> wrote:
> On Tue, May 14, 2013 at 5:01 PM, Ben Guthro <ben at guthro.net> wrote:
>> I am attempting to debug an issue with some Haswell laptop systems
>> which do not restore their screen after resuming from S3 when running
>> on the stable 3.8 kernel (3.8.13)
>> The backlight is OK, but the screen is just black.
>>
>> In trying to determine what was going wrong, I tried looking at the
>> output of intel_reg_dumper, in a good, and bad case:
>>
>> diff -u good_reg.txt bad_reg.txt
>> --- good_reg.txt        2013-05-14 15:08:44.361997000 +0000
>> +++ bad_reg.txt 2013-05-14 15:09:20.480000000 +0000
>> @@ -1,5 +1,4 @@
>> -                 DCC: 0x00000000 (0x00000000f3400000
>> 0x00000000f37fffff 0x00000000��
>> -� )
>> +                 DCC: 0x00000000 (0x00000000f3400000
>> 0x00000000f37fffff 0x00000000��= � )
>>             CHDECMISC: 0x00000000 (none, ch2 enh disabled, ch1 enh
>> disabled, ch0 enh disabled, flex disabled, ep not present)
>>                C0DRB0: 0x00000000 (0x0000)
>>                C0DRB1: 0x00000000 (0x0000)
>> @@ -63,17 +62,17 @@
>>       PIPEA_DP_LINK_N: 0x00000000
>>         CURSOR_A_BASE: 0x01061000
>>      CURSOR_A_CONTROL: 0x04000027
>> -   CURSOR_A_POSITION: 0x03a3032f
>> +   CURSOR_A_POSITION: 0x01bb03fb
>>                  FPA0: 0x00000000 (n = 0, m1 = 0, m2 = 0)
>>                  FPA1: 0x00000000 (n = 0, m1 = 0, m2 = 0)
>>                DPLL_A: 0x00000000 (disabled, non-dvo, VGA, default
>> clock, unknown mode, p1 = 0, p2 = 0)
>>             DPLL_A_MD: 0x00000000
>> -            HTOTAL_A: 0x0821077f (1920 active, 2082 total)
>> -            HBLANK_A: 0x0821077f (1920 start, 2082 end)
>> -             HSYNC_A: 0x081307af (1968 start, 2068 end)
>> -            VTOTAL_A: 0x045f0437 (1080 active, 1120 total)
>> -            VBLANK_A: 0x045f0437 (1080 start, 1120 end)
>> -             VSYNC_A: 0x044b0441 (1090 start, 1100 end)
>> +            HTOTAL_A: 0x00000000 (1 active, 1 total)
>> +            HBLANK_A: 0x00000000 (1 start, 1 end)
>> +             HSYNC_A: 0x00000000 (1 start, 1 end)
>> +            VTOTAL_A: 0x00000000 (1 active, 1 total)
>> +            VBLANK_A: 0x00000000 (1 start, 1 end)
>> +             VSYNC_A: 0x00000000 (1 start, 1 end)
>>             BCLRPAT_A: 0x00000000
>>          VSYNCSHIFT_A: 0x00000000
>>              DSPBCNTR: 0x00004000 (disabled, pipe A)
>>
>>
>> It appears the registers that are saved, and restored in
>> i915_save_modeset_reg / i915_restore_modeset_reg is not working
>> properly.
>>
>> When I put some debug in, I discovered that it was bailing out of
>> i915_save_modeset_reg early since the DRIVER_MODESET bit was cleared.
>> However, it was set at the end of i915_init()
>> This, of course, confuses me.
>>
>> Am I seeing memory corruption here?
>
> It looks like I misread the code here, inversing an if statement state.
>
> That said, I don't really have any clues as to why the display is
> black after resuming from S3
>
> Is this an eDP training issue? Are there any changesets I can try backporting?
> I tried this, but it didn't seem to help:
> https://patchwork.kernel.org/patch/2516601/


Below is a serial dump with drm.debug=4, after resuming from S3

If anyone sees anything awry, being pointed in the right direction
would be appreciated:


[  119.676134] ACPI: Low-level resume complete
[  119.676200] PM: Restoring platform NVS memory
[  119.676585] xen-acpi-processor: Uploading Xen processor PM info
[  119.678302] Enabling non-boot CPUs ...
[  119.678351] installing Xen timer for CPU 1
[  119.678380] cpu 1 spinlock event irq 48
[  119.679469] CPU1 is up
[  119.679496] installing Xen timer for CPU 2
[  119.679505] cpu 2 spinlock event irq 55
[  119.680524] CPU2 is up
[  119.680586] installing Xen timer for CPU 3
[  119.680590] cpu 3 spinlock event irq 62
[  119.681463] CPU3 is up
[  119.681482] installing Xen timer for CPU 4
[  119.681487] cpu 4 spinlock event irq 69
[  119.682448] CPU4 is up
[  119.682478] installing Xen timer for CPU 5
[  119.682482] cpu 5 spinlock event irq 76
[  119.683463] CPU5 is up
[  119.683490] installing Xen timer for CPU 6
[  119.683494] cpu 6 spinlock event irq 83
[  119.684483] CPU6 is up
[  119.684512] installing Xen timer for CPU 7
[  119.684517] cpu 7 spinlock event irq 90
[  119.685523] CPU7 is up
[  119.685941] ACPI: Waking up from system sleep state S3
[  120.546804] pci 0000:01:00.0: power state changed by ACPI to D0
[  120.586931] PM: noirq resume of devices complete after 160.133 msecs
[  120.587261] PM: early resume of devices complete after 0.247 msecs
[  120.587438] xen: registering gsi 16 triggering 0 polarity 1
[  120.587447] i915 0000:00:02.0: setting latency timer to 64
[  120.587449] Already setup the GSI :16
[  120.587569] xen: registering gsi 22 triggering 0 polarity 1
[  120.587578] Already setup the GSI :22
[  120.587749] pciehp 0000:00:1c.2:pcie04: pciehp_resume ENTRY
[  120.587769] pciehp 0000:00:1c.0:pcie04: pciehp_resume ENTRY
[  120.587837] pciehp 0000:00:1c.3:pcie04: pciehp_resume ENTRY
[  120.587868] pciehp 0000:00:1c.4:pcie04: pciehp_resume ENTRY
[  120.588125] pciehp 0000:00:1c.6:pcie04: pciehp_resume ENTRY
[  120.588174] pciehp 0000:00:1c.7:pcie04: pciehp_resume ENTRY
[  120.588203] pciehp 0000:00:1c.5:pcie04: pciehp_resume ENTRY
[  120.588415] ahci 0000:00:1f.2: setting latency timer to 64
[  120.633967] [drm:i915_write32] *ERROR* Unclaimed write to 70030
[  120.634919] [drm:intel_modeset_setup_hw_state], [CRTC:3] hw state
readout: disabled
[  120.634919] [drm:intel_modeset_setup_hw_state], [CRTC:5] hw state
readout: disabled
[  120.634920] [drm:intel_modeset_setup_hw_state], [CRTC:7] hw state
readout: disabled
[  120.634922] [drm:intel_modeset_setup_hw_state], [ENCODER:10:DAC-10]
hw state readout: disabled, pipe=0
[  120.634923] [drm:intel_modeset_setup_hw_state],
[ENCODER:11:TMDS-11] hw state readout: disabled, pipe=0
[  120.634924] [drm:intel_modeset_setup_hw_state],
[ENCODER:20:TMDS-20] hw state readout: disabled, pipe=0
[  120.634925] [drm:intel_modeset_setup_hw_state],
[CONNECTOR:12:eDP-1] hw state readout: disabled
[  120.634926] [drm:intel_modeset_setup_hw_state], [CONNECTOR:9:VGA-1]
hw state readout: disabled
[  120.634927] [drm:intel_modeset_setup_hw_state],
[CONNECTOR:21:HDMI-A-1] hw state readout: disabled
[  120.634928] [drm:intel_modeset_setup_hw_state], [CONNECTOR:22:DP-1]
hw state readout: disabled
[  120.634931] [drm:intel_modeset_check_state], [ENCODER:10:DAC-10]
[  120.634932] [drm:intel_modeset_check_state], [ENCODER:11:TMDS-11]
[  120.634933] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]
[  120.634934] [drm:intel_modeset_check_state], [CRTC:3]
[  120.634934] [drm:intel_modeset_check_state], [CRTC:5]
[  120.634935] [drm:intel_modeset_check_state], [CRTC:7]
[  120.634939] [drm:intel_crt_reset], pch crt adpa set to 0xf40000
[  120.658327] [drm:intel_crtc_set_config], [CRTC:3] [FB:14]
#connectors=1 (x y) (0 0)
[  120.658328] [drm:intel_set_config_compute_mode_changes], crtc has
no fb, full mode set
[  120.658330] [drm:intel_modeset_stage_output_state], encoder
changed, full mode switch
[  120.658331] [drm:intel_modeset_stage_output_state],
[CONNECTOR:12:eDP-1] to [CRTC:3]
[  120.658332] [drm:intel_modeset_stage_output_state], crtc changed,
full mode switch
[  120.658333] [drm:intel_crtc_set_config], attempting to set mode
from userspace
[  120.658336] [drm:drm_mode_debug_printmodeline], Modeline
13:"1920x1080" 60 140000 1920 1968 2068 2082 1080 1090 1100 1120 0x48
0x9
[  120.658337] [drm:intel_set_mode], set mode pipe masks: modeset: 1,
prepare: 1, disable: 0
[  120.658340] [drm:intel_dp_mode_fixup], DP link computation with max
lane count 2 max bw 0a pixel clock 140000KHz
[  120.658342] [drm:intel_dp_mode_fixup], DP link bw 0a lane count 2
clock 270000 bpp 24
[  120.658343] [drm:intel_dp_mode_fixup], DP link bw required 336000
available 432000
[  120.658344] [drm:intel_modeset_adjusted_mode], [CRTC:3]
[  120.658348] [drm:intel_choose_pipe_bpp_dither], clamping display
bpc (was -1) to EDID reported max of 6
[  120.658349] [drm:intel_choose_pipe_bpp_dither], setting pipe bpc to
8 (max display bpc 6)
[  120.658350] [drm:haswell_crtc_mode_set], Mode for pipe 0:
[  120.658352] [drm:drm_mode_debug_printmodeline], Modeline
13:"1920x1080" 60 140000 1920 1968 2068 2082 1080 1090 1100 1120 0x48
0x9
[  120.658360] [drm:ironlake_update_plane], Writing base 00074000
00000000 0 0 7680
[  120.658365] [drm:intel_crtc_mode_set], [ENCODER:11:TMDS-11] set
[MODE:13:1920x1080]
[  120.658366] [drm:intel_ddi_mode_set], Preparing DDI mode for
Haswell on port A, pipe A
[  120.658368] [drm:sandybridge_update_wm], FIFO watermarks For pipe A
- plane 16, cursor: 6
[  120.658371] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[  120.658374] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle
[  120.658378] [drm:ironlake_wait_panel_status], mask b800000f value
00000000 status 00000000 control abcd0000
[  120.658386] [drm:ironlake_edp_panel_vdd_on], PCH_PP_STATUS:
0x00000000 PCH_PP_CONTROL: 0xabcd0008
[  120.658387] [drm:ironlake_edp_panel_vdd_on], eDP was not running
[  120.658866] e1000e 0000:00:19.0: System wakeup disabled by ACPI
[  120.658883] e1000e 0000:00:19.0: setting latency timer to 64
[  120.696373] pciehp 0000:00:1c.2:pcie04: Device 0000:03:00.0 already
exists at 0000:03:00, cannot hot-add
[  120.696457] pciehp 0000:00:1c.2:pcie04: Cannot add device at 0000:03:00
[  120.696474] pciehp 0000:00:1c.6:pcie04: Device 0000:0d:00.0 already
exists at 0000:0d:00, cannot hot-add
[  120.696474] pciehp 0000:00:1c.6:pcie04: Cannot add device at 0000:0d:00
[  120.696530] pci 0000:15:00.0: [1217:8520] type 00 class 0x080501
[  120.696573] pci 0000:15:00.0: reg 10: [mem 0x00000000-0x00000fff]
[  120.696594] pci 0000:15:00.0: reg 14: [mem 0x00000000-0x000007ff]
[  120.696826] pci 0000:15:00.0: PME# supported from D3hot D3cold
[  120.716533] pci 0000:15:00.0: BAR 0: assigned [mem 0xf3800000-0xf3800fff]
[  120.716547] pci 0000:15:00.0: BAR 1: assigned [mem 0xf3801000-0xf38017ff]
[  120.716561] pcieport 0000:00:1c.7: PCI bridge to [bus 15]
[  120.716565] pcieport 0000:00:1c.7:   bridge window [io  0x6000-0x7fff]
[  120.716576] pcieport 0000:00:1c.7:   bridge window [mem
0xf3800000-0xf41fffff]
[  120.716585] pcieport 0000:00:1c.7:   bridge window [mem
0xd2100000-0xd2afffff 64bit pref]
[  120.716618] pci 0000:15:00.0: no hotplug settings from platform
[  120.866415] [drm:ironlake_edp_panel_on], Turn eDP power on
[  120.866419] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle
[  120.866427] [drm:ironlake_wait_panel_status], mask b800000f value
00000000 status 00000000 control abcd0008
[  120.866434] [drm:ironlake_wait_panel_on], Wait for panel power on
[  120.866440] [drm:ironlake_wait_panel_status], mask b000000f value
80000008 status 0000000a control abcd000b
[  121.026430] ata4: SATA link down (SStatus 0 SControl 300)
[  121.046458] ata3: SATA link down (SStatus 0 SControl 300)
[  121.066461] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[  121.078674] ata2.00: configured for UDMA/100
[  121.086422] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[  121.086434] [drm:ironlake_panel_vdd_off_sync], PCH_PP_STATUS:
0x80000008 PCH_PP_CONTROL: 0xabcd0003
[  121.147945] [drm:intel_dp_start_link_train], training pattern 1
signal levels 00000000
[  121.149476] [drm:intel_dp_start_link_train], clock recovery OK
[  121.151307] [drm:intel_dp_complete_link_train], Channel EQ done. DP
Training successfull
[  121.206437] [drm:ironlake_wait_for_vblank], vblank wait timed out
[  121.266417] [drm:ironlake_wait_for_vblank], vblank wait timed out
[  121.266833] [drm:ironlake_edp_backlight_on],
[  121.306450] [drm:intel_connector_check_state], [CONNECTOR:12:eDP-1]
[  121.306456] [drm:intel_modeset_check_state], [ENCODER:10:DAC-10]
[  121.306460] [drm:intel_modeset_check_state], [ENCODER:11:TMDS-11]
[  121.306463] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]
[  121.306466] [drm:intel_modeset_check_state], [CRTC:3]
[  121.306469] [drm:intel_modeset_check_state], [CRTC:5]
[  121.306471] [drm:intel_modeset_check_state], [CRTC:7]
[  121.826439] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[  121.966446] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[  122.214860] ata1.00: configured for UDMA/133
[  122.226644] sd 0:0:0:0: [sda] Starting disk
[  123.587377] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: Rx/Tx
[  123.587440] br-eth0: port 1(eth0) entered forwarding state
[  123.587457] br-eth0: port 1(eth0) entered forwarding state
[  124.196432] pciehp 0000:00:1c.0:pcie04: Link Training Error occurs
[  124.196436] pciehp 0000:00:1c.0:pcie04: Failed to check link status
[  124.196643] dpm_run_callback(): pnp_bus_resume+0x0/0x70 returns -19
[  124.196647] PM: Device 00:09 failed to resume: error -19
[  124.198100] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[  124.204676] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[  124.427522] PM: resume of devices complete after 3840.259 msecs
[  124.427617] PM: resume devices took 3.840 seconds
[  124.427815] PM: Finishing wakeup.
[  124.427816] Restarting tasks ... done.
[  124.755977] video LNXVIDEO:00: Restoring backlight state
[  124.755992] video LNXVIDEO:01: Restoring backlight state
[  124.817272] [drm:drm_mode_setcrtc], [CRTC:3]
[  124.817293] [drm:drm_mode_setcrtc], [CONNECTOR:12:eDP-1]
[  124.817304] [drm:intel_crtc_set_config], [CRTC:3] [FB:25]
#connectors=1 (x y) (0 0)
[  124.817318] [drm:intel_modeset_stage_output_state],
[CONNECTOR:12:eDP-1] to [CRTC:3]
[  124.821673] [drm:ironlake_update_plane], Writing base 0085D000
00000000 0 0 7680
[  124.836501] [drm:drm_mode_setcrtc], [CRTC:5]
[  124.836521] [drm:intel_crtc_set_config], [CRTC:5] [NOFB]
[  124.836536] [drm:intel_modeset_stage_output_state],
[CONNECTOR:12:eDP-1] to [CRTC:3]
[  124.836775] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  124.836785] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1]
[  124.836796] [drm:intel_dp_detect], DPCD: 11 0a 82 01 00 00 01 80 02
00 00 00 00 01 00
[  124.836807] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[  124.836823] [drm:ironlake_edp_panel_vdd_on], PCH_PP_STATUS:
0x80000008 PCH_PP_CONTROL: 0xabcd000f
[  124.837345] [drm:intel_dp_probe_oui], Sink OUI: 00e04c
[  124.837864] [drm:intel_dp_probe_oui], Branch OUI: 00e04c
[  124.837873] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[  124.837900] [drm:drm_edid_to_eld], ELD: no CEA Extension found
[  124.837913] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1] probed modes :
[  124.837923] [drm:drm_mode_debug_printmodeline], Modeline
23:"1920x1080" 60 140000 1920 1968 2068 2082 1080 1090 1100 1120 0x48
0x9
[  124.837939] [drm:drm_mode_debug_printmodeline], Modeline
24:"1920x1080" 40 140000 1920 1968 2068 2520 1080 1090 1100 1388 0x40
0x9
[  124.837960] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  124.838445] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  124.838461] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  124.838472] [drm:intel_ironlake_crt_detect_hotplug], trigger
hotplug detect cycle: adpa=0xf40000
[  124.856381] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  124.856402] [drm:intel_crt_detect], CRT not detected via hotplug
[  124.876359] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  124.876363] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  124.876366] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  124.876368] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga. force bit now 1
[  124.876763] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  124.876765] [drm:intel_gmbus_force_bit], disabling bit-banging on
i915 gmbus vga. force bit now 0
[  124.876768] [drm:intel_crt_detect_ddc], CRT not detected via
DDC:0x50 [no valid EDID found]
[  124.876770] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1] disconnected
[  124.876775] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  124.876777] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  124.876781] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  124.876783] [drm:intel_crt_detect], CRT not detected via hotplug
[  124.896366] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  124.896386] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  124.896401] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  124.896416] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga. force bit now 1
[  124.896820] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  124.896830] [drm:intel_gmbus_force_bit], disabling bit-banging on
i915 gmbus vga. force bit now 0
[  124.896840] [drm:intel_crt_detect_ddc], CRT not detected via
DDC:0x50 [no valid EDID found]
[  124.896851] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1] disconnected
[  124.896879] [drm:drm_mode_getconnector], [CONNECTOR:21:?]
[  124.896889] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1]
[  124.916382] [drm:gmbus_xfer], GMBUS [i915 gmbus dpd] NAK for addr: 0050 r(1)
[  124.916400] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus dpd
[  124.916413] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1] disconnected
[  124.916433] [drm:drm_mode_getconnector], [CONNECTOR:21:?]
[  124.916443] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1]
[  124.936423] [drm:gmbus_xfer], GMBUS [i915 gmbus dpd] NAK for addr: 0050 r(1)
[  124.936442] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus dpd
[  124.936455] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1] disconnected
[  124.936483] [drm:drm_mode_getconnector], [CONNECTOR:22:?]
[  124.936493] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1]
[  124.939070] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  124.958956] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  124.978973] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  124.996363] [drm:intel_dp_detect], DPCD: 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00
[  124.996378] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1] disconnected
[  124.996400] [drm:drm_mode_getconnector], [CONNECTOR:22:?]
[  124.996410] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1]
[  124.998998] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  125.018976] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  125.039002] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  125.056370] [drm:intel_dp_detect], DPCD: 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00
[  125.056399] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1] disconnected
[  125.157494] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[  125.157606] ehci-pci: EHCI PCI platform driver
[  125.157626] xen: registering gsi 16 triggering 0 polarity 1
[  125.157630] Already setup the GSI :16
[  125.157657] ehci-pci 0000:00:1a.0: setting latency timer to 64
[  125.157661] ehci-pci 0000:00:1a.0: EHCI Host Controller
[  125.157714] ehci-pci 0000:00:1a.0: new USB bus registered, assigned
bus number 1
[  125.157739] ehci-pci 0000:00:1a.0: debug port 2
[  125.161644] ehci-pci 0000:00:1a.0: cache line size of 64 is not supported
[  125.161683] ehci-pci 0000:00:1a.0: irq 16, io mem 0xf743c000
[  125.176355] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[  125.176460] hub 1-0:1.0: USB hub found
[  125.176464] hub 1-0:1.0: 3 ports detected
[  125.186500] xen: registering gsi 21 triggering 0 polarity 1
[  125.186515] Already setup the GSI :21
[  125.186577] ehci-pci 0000:00:1d.0: setting latency timer to 64
[  125.186581] ehci-pci 0000:00:1d.0: EHCI Host Controller
[  125.186784] ehci-pci 0000:00:1d.0: new USB bus registered, assigned
bus number 2
[  125.186843] ehci-pci 0000:00:1d.0: debug port 2
[  125.190832] ehci-pci 0000:00:1d.0: cache line size of 64 is not supported
[  125.190912] ehci-pci 0000:00:1d.0: irq 21, io mem 0xf743b000
[  125.206422] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[  125.206767] hub 2-0:1.0: USB hub found
[  125.206781] hub 2-0:1.0: 3 ports detected
[  125.285197] xen: registering gsi 16 triggering 0 polarity 1
[  125.285215] Already setup the GSI :16
[  125.285341] xhci_hcd 0000:00:14.0: setting latency timer to 64
[  125.285356] xhci_hcd 0000:00:14.0: xHCI Host Controller
[  125.285599] xhci_hcd 0000:00:14.0: new USB bus registered, assigned
bus number 3
[  125.285993] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
[  125.286705] xHCI xhci_add_endpoint called for root hub
[  125.286715] xHCI xhci_check_bandwidth called for root hub
[  125.286772] hub 3-0:1.0: USB hub found
[  125.286799] hub 3-0:1.0: 15 ports detected
[  125.296556] xhci_hcd 0000:00:14.0: xHCI Host Controller
[  125.296754] xhci_hcd 0000:00:14.0: new USB bus registered, assigned
bus number 4
[  125.297070] xHCI xhci_add_endpoint called for root hub
[  125.297083] xHCI xhci_check_bandwidth called for root hub
[  125.297182] hub 4-0:1.0: USB hub found
[  125.297208] hub 4-0:1.0: 6 ports detected
[  125.317531] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  125.317537] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1]
[  125.317540] [drm:intel_dp_detect], DPCD: 11 0a 82 01 00 00 01 80 02
00 00 00 00 01 00
[  125.317543] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[  125.317546] [drm:ironlake_edp_panel_vdd_on], eDP VDD already on
[  125.318054] [drm:intel_dp_probe_oui], Sink OUI: 00e04c
[  125.318561] [drm:intel_dp_probe_oui], Branch OUI: 00e04c
[  125.318563] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[  125.318571] [drm:drm_edid_to_eld], ELD: no CEA Extension found
[  125.318575] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1] probed modes :
[  125.318579] [drm:drm_mode_debug_printmodeline], Modeline
23:"1920x1080" 60 140000 1920 1968 2068 2082 1080 1090 1100 1120 0x48
0x9
[  125.318583] [drm:drm_mode_debug_printmodeline], Modeline
24:"1920x1080" 40 140000 1920 1968 2068 2520 1080 1090 1100 1388 0x40
0x9
[  125.318588] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  125.318717] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  125.318720] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  125.318724] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  125.318726] [drm:intel_crt_detect], CRT not detected via hotplug
[  125.336369] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  125.336376] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  125.336380] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  125.336384] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga. force bit now 1
[  125.336751] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  125.336753] [drm:intel_gmbus_force_bit], disabling bit-banging on
i915 gmbus vga. force bit now 0
[  125.336755] [drm:intel_crt_detect_ddc], CRT not detected via
DDC:0x50 [no valid EDID found]
[  125.336758] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1] disconnected
[  125.336765] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  125.336768] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  125.336771] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  125.336774] [drm:intel_crt_detect], CRT not detected via hotplug
[  125.356375] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  125.356386] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  125.356394] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  125.356401] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga.[  126.506424] usb 3-14: new full-speed USB device
number 4 using xhci_hcd
[  126.554084] usb 3-14: config 0 descriptor??
[  126.626409] [drm:intel_modeset_check_state], [ENCODER:10:DAC-10]
[  126.626426] [drm:intel_modeset_check_state], [ENCODER:11:TMDS-11]
[  126.626436] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]
[  126.626445] [drm:intel_modeset_check_state], [CRTC:3]
[  126.626453] [drm:intel_modeset_check_state], [CRTC:5]
[  126.626461] [drm:intel_modeset_check_state], [CRTC:7]
[  126.630921] [drm:drm_mode_setcrtc], [CRTC:3]
[  126.630948] [drm:drm_mode_setcrtc], [CONNECTOR:12:eDP-1]
[  126.630948] [drm:intel_crtc_set_config], [CRTC:3] [FB:25]
#connectors=1 (x y) (0 0)
[  126.630960] [drm:intel_modeset_stage_output_state],
[CONNECTOR:12:eDP-1] to [CRTC:3]
[  126.706999] [drm:sandybridge_update_wm], FIFO watermarks For pipe A
- plane 16, cursor: 6
[  126.707006] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[  126.707010] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle
[  126.707015] [drm:ironlake_wait_panel_status], mask b800000f value
00000000 status 00000000 control abcd0000
[  126.707024] [drm:ironlake_edp_panel_vdd_on], PCH_PP_STATUS:
0x00000000 PCH_PP_CONTROL: 0xabcd0008
[  126.707028] [drm:ironlake_edp_panel_vdd_on], eDP was not running
[  126.916392] [drm:ironlake_edp_panel_on], Turn eDP power on
[  126.916411] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle
[  126.916423] [drm:ironlake_wait_panel_status], mask b800000f value
00000000 status 00000000 control abcd0008
[  126.916440] [drm:ironlake_wait_panel_on], Wait for panel power on
[  126.916451] [drm:ironlake_wait_panel_status], mask b000000f value
80000008 status 9000000a control abcd000b
[  127.136356] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[  127.136374] [drm:ironlake_panel_vdd_off_sync], PCH_PP_STATUS:
0x80000008 PCH_PP_CONTROL: 0xabcd0003
[  127.197885] [drm:intel_dp_start_link_train], training pattern 1
signal levels 00000000
[  127.199424] [drm:intel_dp_start_link_train], clock recovery OK
[  127.201254] [drm:intel_dp_complete_link_train], Channel EQ done. DP
Training successfull
[  127.256352] [drm:ironlake_wait_for_vblank], vblank wait timed out
[  127.316443] [drm:ironlake_wait_for_vblank], vblank wait timed out
[  127.316877] [drm:ironlake_edp_backlight_on],
[  127.356458] [drm:intel_connector_check_state], [CONNECTOR:12:eDP-1]
[  127.356478] [drm:intel_modeset_check_state], [ENCODER:10:DAC-10]
[  127.356488] [drm:intel_modeset_check_state], [ENCODER:11:TMDS-11]
[  127.356498] [drm:intel_modeset_check_state], [ENCODER:20:TMDS-20]
[  127.356506] [drm:intel_modeset_check_state], [CRTC:3]
[  127.356514] [drm:intel_modeset_check_state], [CRTC:5]
[  127.356522] [drm:intel_modeset_check_state], [CRTC:7]
[  127.360188] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  127.360193] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1]
[  127.360196] [drm:intel_dp_detect], DPCD: 11 0a 82 01 00 00 01 80 02
00 00 00 00 01 00
[  127.360199] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[  127.360208] [drm:ironlake_edp_panel_vdd_on], PCH_PP_STATUS:
0x80000008 PCH_PP_CONTROL: 0xabcd000f
[  127.360716] [drm:intel_dp_probe_oui], Sink OUI: 00e04c
[  127.361222] [drm:intel_dp_probe_oui], Branch OUI: 00e04c
[  127.361224] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[  127.361232] [drm:drm_edid_to_eld], ELD: no CEA Extension found
[  127.361235] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:12:eDP-1] probed modes :
[  127.361238] [drm:drm_mode_debug_printmodeline], Modeline
23:"1920x1080" 60 140000 1920 1968 2068 2082 1080 1090 1100 1120 0x48
0x9
[  127.361241] [drm:drm_mode_debug_printmodeline], Modeline
24:"1920x1080" 40 140000 1920 1968 2068 2520 1080 1090 1100 1388 0x40
0x9
[  127.361246] [drm:drm_mode_getconnector], [CONNECTOR:12:?]
[  127.361362] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  127.361364] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  127.361368] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  127.361371] [drm:intel_crt_detect], CRT not detected via hotplug
[  127.376384] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  127.376389] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  127.376391] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  127.376394] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga. force bit now 1
[  127.376762] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  127.376764] [drm:intel_gmbus_force_bit], disabling bit-banging on
i915 gmbus vga. force bit now 0
[  127.376766] [drm:intel_crt_detect_ddc], CRT not detected via
DDC:0x50 [no valid EDID found]
[  127.376769] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1] disconnected
[  127.376773] [drm:drm_mode_getconnector], [CONNECTOR:9:?]
[  127.376776] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1]
[  127.376779] [drm:intel_ironlake_crt_detect_hotplug], ironlake
hotplug adpa=0xf40000, result 0
[  127.376781] [drm:intel_crt_detect], CRT not detected via hotplug
[  127.396426] [drm:gmbus_xfer], GMBUS [i915 gmbus vga] NAK for addr: 0050 r(1)
[  127.396444] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  127.396456] [drm:intel_crt_get_edid], CRT GMBUS EDID read failed,
retry using GPIO bit-banging
[  127.396466] [drm:intel_gmbus_force_bit], enabling bit-banging on
i915 gmbus vga. force bit now 1
[  127.396861] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus vga
[  127.396871] [drm:intel_gmbus_force_bit], disabling bit-banging on
i915 gmbus vga. force bit now 0
[  127.396881] [drm:intel_crt_detect_ddc], CRT not detected via
DDC:0x50 [no valid EDID found]
[  127.396893] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:9:VGA-1] disconnected
[  127.396933] [drm:drm_mode_getconnector], [CONNECTOR:21:?]
[  127.396944] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1]
[  127.416407] [drm:gmbus_xfer], GMBUS [i915 gmbus dpd] NAK for addr: 0050 r(1)
[  127.416432] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus dpd
[  127.416450] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1] disconnected
[  127.416494] [drm:drm_mode_getconnector], [CONNECTOR:21:?]
[  127.416509] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1]
[  127.436382] [drm:gmbus_xfer], GMBUS [i915 gmbus dpd] NAK for addr: 0050 r(1)
[  127.436386] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent
adapter i915 gmbus dpd
[  127.436389] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:21:HDMI-A-1] disconnected
[  127.436398] [drm:drm_mode_getconnector], [CONNECTOR:22:?]
[  127.436401] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1]
[  127.438956] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.458935] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.478930] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.496362] [drm:intel_dp_detect], DPCD: 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00
[  127.496370] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1] disconnected
[  127.496378] [drm:drm_mode_getconnector], [CONNECTOR:22:?]
[  127.496389] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1]
[  127.498943] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.518929] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.538929] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x5145003f
[  127.556394] [drm:intel_dp_detect], DPCD: 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00
[  127.556397] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:22:DP-1] disconnected
[  127.846389] [drm:ironlake_panel_vdd_off_sync], PCH_PP_STATUS:
0x80000008 PCH_PP_CONTROL: 0xabcd0007



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