JETPACK 4.6.x GPU error on boot when on barrel jack

When powering from microUSB, jetson nano boots up fine, but when using barrel jack, I get a bunch of errors regarding gpu

[ 18.364735] nvgpu: 57000000.gpu __nvgpu_timeout_expired_msg_cpu:94 [ERR] Timeout detected @ gr_gk20a_ctx_wait_ucode+0xa4/0x570 [nvgpu]
[ 18.390563] nvgpu: 57000000.gpu gr_gk20a_ctx_wait_ucode:528 [ERR] timeout waiting on mailbox=0 value=0x00000010
[ 18.418161] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:129 [ERR] gr_fecs_os_r : 0
[ 18.439591] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:131 [ERR] gr_fecs_cpuctl_r : 0x40
[ 18.462050] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:133 [ERR] gr_fecs_idlestate_r : 0x1
[ 18.481004] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:135 [ERR] gr_fecs_mailbox0_r : 0x0
[ 18.498369] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:137 [ERR] gr_fecs_mailbox1_r : 0x0
[ 18.498383] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:139 [ERR] gr_fecs_irqstat_r : 0x0
[ 18.498394] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:141 [ERR] gr_fecs_irqmode_r : 0x4
[ 18.498406] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:143 [ERR] gr_fecs_irqmask_r : 0x8704
[ 18.498416] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:145 [ERR] gr_fecs_irqdest_r : 0x0
[ 18.498426] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:147 [ERR] gr_fecs_debug1_r : 0x40
[ 18.498436] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:149 [ERR] gr_fecs_debuginfo_r : 0x0
[ 18.498446] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:151 [ERR] gr_fecs_ctxsw_status_1_r : 0x300
[ 18.498458] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(0) : 0x10
[ 18.498469] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(1) : 0x0
[ 18.498480] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(2) : 0x41009
[ 18.498490] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(3) : 0x20
[ 18.498501] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(4) : 0x1ffda0
[ 18.498510] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(5) : 0x0
[ 18.498520] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(6) : 0x0
[ 18.498529] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(7) : 0x0
[ 18.498538] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(8) : 0x0
[ 18.498548] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(9) : 0x0
[ 18.498557] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(10) : 0x0
[ 18.498567] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(11) : 0x0
[ 18.498577] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(12) : 0x0
[ 18.498587] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(13) : 0x0
[ 18.498597] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(14) : 0x0
[ 18.498607] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:155 [ERR] gr_fecs_ctxsw_mailbox_r(15) : 0x0
[ 18.498616] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:159 [ERR] gr_fecs_engctl_r : 0x0
[ 18.498626] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:161 [ERR] gr_fecs_curctx_r : 0x0
[ 18.498635] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:163 [ERR] gr_fecs_nxtctx_r : 0x0
[ 18.498646] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:169 [ERR] FECS_FALCON_REG_IMB : 0xbadfbadf
[ 18.498656] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:175 [ERR] FECS_FALCON_REG_DMB : 0xbadfbadf
[ 18.498667] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:181 [ERR] FECS_FALCON_REG_CSW : 0xbadfbadf
[ 18.498676] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:187 [ERR] FECS_FALCON_REG_CTX : 0xbadfbadf
[ 18.498686] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:193 [ERR] FECS_FALCON_REG_EXCI : 0xbadfbadf
[ 18.498696] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:200 [ERR] FECS_FALCON_REG_PC : 0xbadfbadf
[ 18.498706] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:206 [ERR] FECS_FALCON_REG_SP : 0xbadfbadf
[ 18.498716] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:200 [ERR] FECS_FALCON_REG_PC : 0xbadfbadf
[ 18.498725] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:206 [ERR] FECS_FALCON_REG_SP : 0xbadfbadf
[ 18.498735] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:200 [ERR] FECS_FALCON_REG_PC : 0xbadfbadf
[ 18.498745] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:206 [ERR] FECS_FALCON_REG_SP : 0xbadfbadf
[ 18.498755] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:200 [ERR] FECS_FALCON_REG_PC : 0xbadfbadf
[ 18.498765] nvgpu: 57000000.gpu gk20a_fecs_dump_falcon_stats:206 [ERR] FECS_FALCON_REG_SP : 0xbadfbadf
[ 18.499788] nvgpu: 57000000.gpu gr_gk20a_submit_fecs_method_op_locked:574 [ERR] fecs method: data = 0x807ff65e push adr=0x00000009
[ 18.513432] nvgpu: 57000000.gpu gr_gk20a_fecs_ctx_image_save:1378 [ERR] save context image failed

Please share full dmesg.

@WayneWWW how should I do that? I am unable to get past that error screen. when i change back to microUSB, dmesg doesnt show that error. /var/log/kern.log doesnt log those error as well

Use the uart console.

unfortunately i do not have access to those wires

Then get such wire. Otherwise this issue won’t proceed.

exactly the same as this Serial Log here

Is this still an issue to support? Any result can be shared? Thanks

I jacked up the step down converter to 5.7V+ and the error stopped.

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