Comment 1 for bug 784474

recompiled latest u-boot (535abb9 - Sun May 15 23:23:36) for Panda and it seems to help a bit:

omap login: [ 14.583953] usb0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 14.630310] twl4030 operation mode cannot be changed on-the-fly
[ 14.703765] twl4030 operation mode cannot be changed on-the-fly
[ 22.338684] usb0: no IPv6 routers present
[ 24.292205] usb 1-2.4: new full speed USB device using ehci-omap and address 4
[ 24.497009] cdc_acm 1-2.4:1.0: This device cannot do calls on its own. It is not a modem.
[ 24.506500] cdc_acm 1-2.4:1.0: ttyACM0: USB ACM device
[ 24.516845] usbcore: registered new interface driver cdc_acm
[ 24.522888] cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters

a binary version of this u-boot is available here: http://people.canonical.com/~ppisati/lp784474/u-boot.bin.panda