On Sat, Aug 23, 2014 at 12:53:12PM -0500, Sergio De León wrote: > Hi, I've been trying to get this device work in linux Mint Qiana > (3.13.0-24-generic) without success. > > The XR21V1414 is a multiport USB-UART device. (0x04e2:0x1414) > (The driver provided "Vizzini" causes system crash due a improper > initialization of tty_port) > http://www.exar.com/common/content/default.aspx?id=10296 > > The cdc_acm driver creates the proper ttyACMx but there's no > communication with the device. What does the kernel log say when you plug the device in with the cdc-acm driver loaded? An what happens if you enable debugging for the driver and write something to the device? The manufacturer seems to claim compliance with CDC (although some extra features would be missing) so the cdc-acm driver should work. 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