Embedded Linux for Developers

Troubleshooting your Wandboard's first boot

If you have problems booting your image, follow this recipe to troubleshoot.

Getting ready

1. Without the microSD card inserted, plug in a microUSB-to-USB cable to the USB OTG interface of your Wandboard. Check the lsusb utility on your Linux host to see whether the Wandboard appears as follows:

   Bus 002 Device 006: ID 15a2:0054 Freescale Semiconductor, Inc. i.MX6Q SystemOnChip in RecoveryMode

   If you don't see this, try a different power supply. It should be 5V, 10W.

2. Make sure you connect a NULL modem serial cable between the RS232 connector in your Wandboard target and a serial port on your Linux host. Then open a terminal program like minicom with the following:

   $ minicom -D /dev/ttyS0 -b 115200
   

   Note

   You will ...