reComputer J1020v1 (A206) – GPU firmware / black screen / GDM issue

Products & Technology
1

Hi, I’m having a problem with my Seeed reComputer J1020v1 (A206).

The device boots into the Ubuntu console, but the graphical desktop does not start, and the screen remains black.

System:

  • Jetson Nano

  • L4T R32.7.3

  • Ubuntu 18.04.6

  • Kernel 4.9.299-tegra

gdm3, ubuntu-desktop and gnome-shell are installed.

Running:

sudo systemctl isolate graphical.target

results in:

nvhost module busy
failed to power on
err -22

sudo nvpmodel -m 0 also fails with:

failed to load netlist NETB_img.bin
failed to load netlist image
failed to enable GR
failed to set power mode

It specifically tries to load:

gm20b/NETB_img.bin

but /lib/firmware/gm20b/ does not exist.

I only found:

/lib/firmware/gv11b/NETB_img.bin

Could this be a JetPack/firmware mismatch or corrupted installation?

Should I reflash the recommended J1020 JetPack image, or is there a way to restore the correct GM20B firmware without reflashing?

Thanks!

2

Hi,

The firmware /lib/firmware/gv11b/NETB_img.bin is for Jetson Xavier/AGX modules.

Jetson Nano uses firmware under /lib/firmware/gm20b/ instead.

Therefore, we suspect the BSP was incorrectly installed. Please refer to our wiki for the correct BSP installation procedure.J101 Carrier Board | Seeed Studio Wiki