Boot display delay about 6 seconds

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

I have a orin nano dev kit board. Below is board information.
Software part of jetson-stats 4.2.1 - (c) 2023, Raffaello Bonghi
Model: NVIDIA Orin Nano Developer Kit - Jetpack 5.1.1 [L4T 35.3.1]
NV Power Mode[1]: 7W
Serial Number: [XXX Show with: jetson_release -s XXX]
Hardware:

  • 699-level Part Number: 699-13767-0005-300 K.2
  • P-Number: p3767-0005
  • Module: NVIDIA Jetson Orin Nano (Developer kit)
  • SoC: tegra23x
  • CUDA Arch BIN: 8.7
  • Codename: P3768
    Platform:
  • Machine: aarch64
  • System: Linux
  • Distribution: Ubuntu 20.04 focal
  • Release: 5.10.104-tegra
  • Python: 3.8.10

I build UEFI on branch r35.3.1-updates as Orin nano Developer kit takes long time to boot - #23 by harry_xiaye

I found the boot display will be delayed about 6 seconds on monitor. See the attached video and UEFI debug output log.

You can see in video, at about 00:13, it outputed below boot options. I set 10 seconds in extlinux.conf.

L4TLauncher: Attempting Direct Boot
L4T boot options
0: primary kernel
1: backup kernel
Press 0-1 to boot selection within 10.0 seconds.

But the screen has no any display until 00:19.

Why the screen has no display when the UEFI has show the boot options?

2

add UART log.
boot_display_delay.txt (89.4 KB)

4

Hi harry_xiaye,

Are you expected to remove this 6s delay (00:13-00:19)?
Or show the logo earlier? (from 00:13)

5

I want to show the logo earlier (at 00:13) since UEFI code is showing logo at that time.

Delaying 6 seconds is also because I config extliunux.conf with 10 seconds waiting for two options. I did this to make sure I can see the logo. If I did not set two boot options in extlinux.conf and set 10 seconds wait. I can’t see the logo.

6

How do you configure this in extlinux.conf?
If you don’t add 10s delay, are there these 2 boot options in boot log?
Could you share the result when you remove this 10s delay?

We don’t see this delay on our setup.
To check any lag from the monitor, it’s worth checking another monitor, preferably 1920x1080., and disable power saving, as some monitors take a longer time to come out of standby.

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