Jetson nano won't boot after 2nd nvidia screen on HDMI monitor and showing no signal

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
24

This is my problem from very first start… i cannot see anything on my monitor. anyway i attached a fresh dmesg right after reboot. Please have a check.
dmesg log nanog (59.0 KB)

25

Do you have other monitors to try here?

What is the result of df -h?

26

i have tried several HDMI monitor and they returned ‘No signal’

df -h result:

nano@nano-desktop:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/mmcblk0p1   59G   33G   24G  58% /
none            950M     0  950M   0% /dev
tmpfs           990M   40K  990M   1% /dev/shm
tmpfs           990M   22M  968M   3% /run
tmpfs           5,0M  4,0K  5,0M   1% /run/lock
tmpfs           990M     0  990M   0% /sys/fs/cgroup
tmpfs           198M  8,0K  198M   1% /run/user/1000
27

Could you share the xorg log in this situation? Previous one seems having another DP monitor.

I only need HDMI case. You can dump it from serial console.

28

xorgLog (12.7 KB)
Here it is…

29

Do you have a monitor that has some common CEA mode? For example, 1920x1080p

I saw this MPI7002 is a small panel which only supports 1024 x 600 and I doubt if nano 2gb driver really can output such small resolution or not.

30

Also, you said this board has been used for a while. Does it always use this monitor?

31

i’ll check to see if there are available 1920x1080p monitor

32

most of the time i use regular lcd desktop monitor… just recently i use this small monitor… it works for couple of days then the problem start.

33

unfortunatelly, i don’t have any with CEA mode, but there are several standard computer monitor that support 1920x1080p.

if this the case that nano 2gb driver cannot run that resolution, what should i do then?

34

Reflash the board first. If the small panel was working fine before, I would suggest a software reset from sdkmanager first.

35

software reset means to reflash the board yes? is by doing that my installed softwares and packages also be gone during reset?

36

Yes, so please backup files you need before re-flashing.

37

ok thanks for the suggestion… i’ll consider it for my last resort. I would try to put the sdcard to another nano (devkit B01) first.

38

thank you for the advise… but just as i reply to your colleague WayneWWW, i would like to try to put the sdcard to another nano… i’ll inform you both of the result.

39

Yeah, it’s always good to find another device for cross validation.

40

the result with devkit B01 is just the same… nothing on monitor. I will proceed with reflash operation by sdkmanager…

41

unfortunatelly, i don’t have any with CEA mode, but there are several standard computer monitor that support 1920x1080p.

So did you test those monitors or not??

42

yes i did… but no progress. Later today i will reflash the sd card. Since I dont have ubuntu 18.04 llinux desktop to inistall jetpack 4.6.4 i will use Balena instead.

43

please get a ubuntu 18.04 host. Balena does not really flash the board.