I am using Jetson nano as an image file distributed by https://developer.nvidia.com/embedded/learn/get-started-jetson-nano-devkit#write.
The current Jetson nano is normal for hdmi, but the display using dp port is not output normally.
We tested the DVI to dp 1.1V cable and the HDMI to dp 1.2V cable because there were no monitors with the DP Port.
The log using dmesg | grep dp is attached below.
I ask for your understanding to ask questions using a translator.
$ dmesg |grep dp (hdmi to dp 1.2V )
[ 0.000000] Kernel command line: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 console=ttyS0,115200n8 debug_uartport=lsport,0 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=0x1000@0xff780000 core_edp_mv=1125 core_edp_ma=4000 tegra_fbmem=0x140000@0x92cb4000 is_hdmi_initialised=1 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 quiet
[ 0.493263] tegra-pmc: Clear bootloader IO dpd settings
[ 0.588976] avdd-io-hdmi-dp: 1050 mV
[ 0.618427] avdd-io-edp-1v05: supplied by avdd-1v05-pll
[ 0.618463] avdd-io-edp-1v05: 1050 mV
[ 0.679775] RPC: Registered udp transport module.
[ 1.056961] tegradc tegradc.1: dpd enable lookup fail:-19
[ 1.361701] avdd-io-edp-1v05: disabling
[ 2155.837156] tegradc tegradc.1: dp: plug event received
[ 2155.947559] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2155.951038] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2155.952727] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2155.954905] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2155.961672] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2155.970763] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2155.972215] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2155.974688] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2155.976131] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2155.982514] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2155.998521] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2156.000036] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2156.001483] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2156.002937] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2156.009259] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2156.018248] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2156.019690] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2156.021127] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2156.022402] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2156.028741] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2156.037278] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2160.704132] tegradc tegradc.1: dp: unplug event received
[ 2160.953167] tegradc tegradc.1: dp: plug event received
[ 2161.062535] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2161.064081] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2161.065974] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2161.067478] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2161.073847] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2161.082829] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2161.084294] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2161.085747] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2161.087208] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2161.093738] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2161.102684] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2161.104134] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2161.105810] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2161.107379] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2161.113710] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2161.123800] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2161.127257] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2161.128633] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2161.130162] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2161.136468] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2161.144872] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2163.985675] tegradc tegradc.1: dp: unplug event received
[ 2164.234513] tegradc tegradc.1: dp: plug event received
[ 2164.346245] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2164.347702] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2164.349143] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2164.350582] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2164.356875] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2164.365867] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2164.367309] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2164.373774] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2164.375841] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2164.382243] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2164.391256] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2164.392709] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2164.394268] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2164.395710] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2164.402033] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2164.411034] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2164.412477] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2164.413877] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2164.415335] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2164.421648] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2164.430041] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2166.777134] tegradc tegradc.1: dp: unplug event received
[ 2167.025929] tegradc tegradc.1: dp: plug event received
[ 2167.138202] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2167.139665] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2167.141128] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2167.142595] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2167.148909] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2167.157987] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2167.159309] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2167.160828] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2167.162296] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2167.168604] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2167.177501] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2167.178859] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2167.180354] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2167.181840] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2167.189566] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2167.198591] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2167.200042] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2167.201519] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2167.202972] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2167.209374] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2167.217679] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2234.748537] tegradc tegradc.1: dp: unplug event received
[ 2235.103296] tegradc tegradc.1: dp: plug event received
[ 2235.212881] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2235.214402] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2235.215855] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2235.217302] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2235.223935] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2235.232964] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2235.234495] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2235.236004] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2235.240653] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2235.247008] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2235.256067] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2235.257961] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2235.259498] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2235.266293] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2235.272597] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2235.281534] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2235.282752] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2235.284288] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2235.285749] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2235.292177] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2235.300459] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2240.128741] tegradc tegradc.1: dp: unplug event received
[ 2240.377665] tegradc tegradc.1: dp: plug event received
[ 2240.488932] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2240.490359] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2240.491821] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2240.493305] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2240.499787] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2240.508982] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2240.510421] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2240.513579] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2240.515042] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2240.521376] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2240.530286] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2240.531729] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2240.533174] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2240.534614] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2240.541207] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2240.550217] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2240.551660] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2240.553205] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2240.554701] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2240.561202] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2240.569506] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2243.410305] tegradc tegradc.1: dp: unplug event received
[ 2243.659231] tegradc tegradc.1: dp: plug event received
[ 2243.768711] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2243.770159] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2243.771625] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2243.773076] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2243.779584] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2243.788575] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2243.790043] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2243.791502] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2243.793055] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2243.799385] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2243.808372] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2243.809822] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2243.811273] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2243.812829] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2243.819201] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2243.828263] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2243.829730] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2243.831209] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2243.832652] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2243.839002] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2243.847367] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2246.201667] tegradc tegradc.1: dp: unplug event received
[ 2246.450494] tegradc tegradc.1: dp: plug event received
[ 2246.560657] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2246.562141] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2246.563586] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2246.565035] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2246.571447] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2246.581654] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2246.583126] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2246.584566] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2246.586015] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2246.592480] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2246.601460] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2246.602961] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2246.604290] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2246.605771] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2246.612159] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2246.621201] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 2246.622675] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 2246.624189] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 2246.625635] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 2246.632061] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 2246.640462] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)
[ 2945.710055] tegradc tegradc.1: dp: unplug event received
[ 3244.277403] tegradc tegradc.1: dp: plug event received
[ 3244.389796] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 3244.390965] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 3244.392464] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 3244.393818] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 3244.400135] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 3244.409182] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 3244.410664] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 3244.412115] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 3244.413435] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 3244.419785] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 3244.428790] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 3244.430236] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 3244.431683] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 3244.433161] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 3244.439585] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 3244.448533] tegradc tegradc.1: dp: aux write retry (0x10000100) – 2
[ 3244.449866] tegradc tegradc.1: dp: aux write retry (0x10000100) – 1
[ 3244.451305] tegradc tegradc.1: dp: aux write retry (0x10000100) – 0
[ 3244.452741] tegradc tegradc.1: dp: aux write got error (0x10000100)
[ 3244.459141] tegradc tegradc.1: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 3244.467437] tegradc tegradc.1: dp: failed to exit panel power save mode (0xfffffff2)