On Thu, Feb 19, 2015 at 08:37:00AM +0100, Roberto Bianchi wrote: > Hi. > I'm writing to you since Johan Hovold addressed me to your email... > > I don't find a solution to a problem with > cdc-acm driver for linux and Arduino USB2SERIAL LIGHT > (http://arduino.cc/en/Main/USBSerial). > > The problem: the "arduino usb2serial light" ISP is not recognized by the > driver cdc-acm anymore. It was up to Nov - Dec 2014 but then, after that > I cannot use it anymore since the driver is not recognizing. > Unfortunately, I made many changes and upgrades in between so it's > difficult for me to tell you what the versions of driver and ubuntu > release I was using. > > Now I'm using Ubuntu 14.10 in order to check if latest driver would have > solved the problem unsuccessfully. Also I have tried to use latest linux > 3.19 to double check, no luck! > I make it short and these are the data: > I am sure that the driver is correctly loaded when I insert the usb > connector (dmesg output) > [ 5013.141340] usb 1-1.3: new full-speed USB device number 5 using > xhci_hcd > [ 5013.230474] usb 1-1.3: New USB device found, idVendor=03eb, > idProduct=2ff7 > [ 5013.230482] usb 1-1.3: New USB device strings: Mfr=0, Product=1, > SerialNumber=0 > [ 5013.230487] usb 1-1.3: Product: Arduino USB-Serial DFU > [ 5013.273072] usbcore: registered new interface driver cdc_acm > [ 5013.273078] cdc_acm: USB Abstract Control Model driver for USB modems > and ISDN adapters > then if I type (as root) > echo '03eb 2ff7' > /sys/bus/usb/drivers/cdc_acm/new_id > I get dmesg output > [10555.368852] cdc_acm 1-1.3:1.0: skipping garbage You shouldn't need to add the id manually. Is this what you did when the device was working? What is the "lsusb -v" output for your device? Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
