On Thu, Feb 21, 2002 at 12:19:08PM -0600, Dane Johnson wrote: > > Hello! > > I am attempting to get a Prolific 2303 USB to serial port converter > working with an external modem. > > I'm running Debian/Unstable and the 2.4.17 kernel with the low latency > patch.
Does the same problem happen without the low latency patch? > The device seems to be recognized, but all attempts to actually talk > to it either hard lock the computer (no oops visible) or return > error messages of one sort or another. > > Specifically, in minicom any "at" command returns ERROR. Using > setserial -v /dev/ttyUSB0 gives me "Cannot get serial info: Invalid > argument". Using setserial -a /dev/ttyUSB0 gives me a hard lockup. setserial does not work with usb-serial devices, but should not give you a lockup. Again, does this happen without the low latency patch? > Any ideas? > > Below are syslog output and the contents of /proc/bus/usb/devices when > I have no USB devices but the adapter plugged in. Ah, one of the "strange" old pl2303 devices. I don't have one of these to test with, but people have reported success with them. Also, if you load the driver with "debug=1" you will get lots of kernel debug log info, which will be helpful in trying to track this down. thanks, greg k-h _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
