I've been trying to connect my arduino mega adk to my machine for the past week or so and I can't get it to work as ttyACMx under /dev is being created.
My machine is on Ubuntu 12.04 with the kernel of 3.2.0-32-generic.
Here're the related dmesg:
[ 8294.500275] usb 2-1.1: USB disconnect, device number 3 [ 8306.416596] usb 2-1.1: new full-speed USB device number 4 using ehci_hcd
I've tried the same hardware on a different machine also with ubuntu 12.04 and the same kernel and I've got
cdc_acm 6.2:1.0 ttyACM0: USB ACM device
in my dmesg and it works just fine.
I've checked and cdc_acm is loaded on both the machines. Any idea where this could have gone wrong?