Hugh 
Hey, I have been having trouble setting up a USB modem to work correctly on Angstrom. I've managed to get it working other then on startup. Every time the ARM is rebooted the modem has to be removed and reinserted into the usb port for the OS to recognise that it exists. If i remove the modem before rebooting, insert while the device is off the modem is correctly recognised on startup. When the modem is working the following is /proc/modules: sd_mod 27516 0 - Live 0xbf071000 usb_storage 28955 0 - Live 0xbf062000 scsi_mod 72988 2 sd_mod,usb_storage, Live 0xbf041000 rfcomm 31763 0 - Live 0xbf032000 hidp 10586 0 - Live 0xbf029000 l2cap 28335 4 rfcomm,hidp, Live 0xbf01c000 crc16 1027 1 l2cap, Live 0xbf016000 bluetooth 50262 3 rfcomm,hidp,l2cap, Live 0xbf000000 When the modem is not working /proc/modules: rfcomm 31763 0 - Live 0xbf032000 hidp 10586 0 - Live 0xbf029000 l2cap 28335 4 rfcomm,hidp, Live 0xbf01c000 crc16 1027 1 l2cap, Live 0xbf016000 bluetooth 50262 3 rfcomm,hidp,l2cap, Live 0xbf000000 On startup the following occurs before udev when it doesn't work and after udev when it works. usb 1-1: new full speed USB device using s3c2410-ohci and address 2 usb 1-1: configuration #1 chosen from 1 choice option 1-1:1.0: GSM modem (1-port) converter detected usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0 option 1-1:1.1: GSM modem (1-port) converter detected usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1 option 1-1:1.2: GSM modem (1-port) converter detected usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2 Empty flash at 0x008fa654 ends at 0x008fa800