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After you have flashed Ubuntu, use this page to bring the device up: connect the debug serial console, verify the software version, get on the network, and connect over SSH and display.
If you have not flashed the device yet, start with Update software.

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Power on the device

  • The Dragonwing IQ-8275 board receives its main power through a 2.10 mm barrel jack connector (JPWR, JACK-C-PC-10A-RA(R)), which supports an input voltage range of 12 V to 36 V. The EVK also includes a Type-C to barrel plug adapter for convenience. Connect a +12 V power adapter to supply power to the board.
  • Connect the USB Type-C end of the cable to USB0 and the other end (Type-A or Type-C) to the host device. This connection allows you to flash the software.

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Set up the debug UART

The debug UART displays diagnostic messages and provides access to the device through the UART shell. To set up the debug UART, do the following:
  1. Connect one end of a micro-USB cable to the micro-USB port on the Dragonwing IQ-8275 device.
  2. Connect the other end of the micro-USB cable to the host computer.
Micro-USB port location
  1. Open the serial console for your host OS:
Install the Screen application on the Ubuntu host by running the following commands:
sudo apt update
sudo apt install screen
Verify the USB port connection by running the following command:
ls /dev/ttyUSB*
Sample Output:
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3
The IQ-8275 EVK’s onboard adapter exposes four serial devices; the main console is the second one (/dev/ttyUSB1). Open it at 115200 baud:
sudo screen /dev/ttyUSB1 115200
  1. Press Enter to bring up the login prompt, then sign in:
    • Username: ubuntu
    • Password: ubuntu
    You will be prompted to set a new password on first login.

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Verify the software version

Confirm the device is running Ubuntu: 
cat /etc/os-release
Expected output: 
PRETTY_NAME="Ubuntu 24.04.3 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.3 LTS (Noble Numbat)"
Check the kernel version: 
uname -a
Expected output: 
Linux ubuntu 6.8.0-1057-qcom #58-Ubuntu SMP PREEMPT_DYNAMIC ... aarch64 GNU/Linux
If the version doesn’t match, or you can’t reach a login prompt at all, the image is missing or outdated. Go back to Update software and flash the latest Ubuntu image.

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Connect to the network

Establish an internet connection using one of the following methods.

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Wi-Fi

The device operates Wi-Fi in station mode. Connect with nmcli: 
sudo nmcli dev wifi connect <WiFi-SSID> password <WiFi-password>
Example — network QualcommWiFi, password 1234567890: 
sudo nmcli dev wifi connect QualcommWiFi password 1234567890
Sample output: 
Device 'wlp1s0' successfully activated with 'd7b990bd-3b77-4b13-b239-b706553abaf8'.
Verify the connection and get the IP address: 
nmcli -p device
ip addr show wlp1s0
Wi-Fi IP address Confirm internet access: 
ping qualcomm.com

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Ethernet

Connect an Ethernet cable from the RJ45 port on the EVK to your network router. Ethernet port location Read the IP address: 
ip addr show end0
Ethernet IP address

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Connect over SSH

SSH gives you a network terminal into the device from your host computer.
Ensure your host computer is on the same network as the device.
  1. Find the device IP address (from the network step above):
    • Ethernet: ip addr show end0
    • Wi-Fi: ip addr show wlp1s0
  2. Connect from the host: 
    ssh ubuntu@<ip-address>
    Example: 
    ssh ubuntu@192.168.0.222
  3. Enter the password when prompted.

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Connect a display

Connect a monitor to DisplayPort0 (JEDP0) or JEDP1 on the EVK using an active Mini DisplayPort-to-DisplayPort cable (included in the box), or an active Mini DisplayPort-to-HDMI adapter (not included). Mini-DisplayPort to DisplayPort cable Active Mini-DisplayPort to HDMI adapter The following figure shows the location of DisplayPort0 on the device: DisplayPort location Power up the device and verify the display. You should see either: Server: Ubuntu server display Desktop: Ubuntu desktop display
Connect the display before you power on the device. If you attach or change the display after the device has booted and the screen stays blank, power-cycle the device to bring the display up.

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SBC (Single Board Computer) mode

To use the EVK as a standalone computer with a keyboard, mouse, and monitor: SBC example connection
  • Power: connect the 12 V adapter.
  • Serial console: micro-USB to your host for UART logs (optional once set up).
  • USB hub: connect a powered USB hub to a USB Type-C port for multiple peripherals.
  • Keyboard & mouse: plug into the USB hub.
  • USB camera: connect to the USB hub (must be UVC-compliant).
  • MIPI camera: attach to a MIPI CSI connector on the board.
  • Display: Mini DisplayPort to DisplayPort cable, or an active Mini DisplayPort-to-HDMI adapter.

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Next steps