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. 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. 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. /proc/bus/usb/devices: T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 4 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 0.00 S: Product=USB OHCI Root Hub S: SerialNumber=c7865000 C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 15 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=067b ProdID=2303 Rev= 1.00 S: Manufacturer=Prolific Technology Inc.?USB-Serial Controller?0 S: Product=Prolific Technology Inc.?USB-Serial Controller?0 S: SerialNumber=Prolific Technology Inc.?USB-Serial Controller?0 C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=81(I) Atr=03(Int.) MxPS= 10 Ivl= 1ms I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=serial E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl= 1ms E: Ad=83(I) Atr=02(Bulk) MxPS= 64 Ivl= 1ms /var/log/syslog: Feb 21 12:11:57 loox kernel: hub.c: USB new device connect on bus1/1/4, assigned device number 6 Feb 21 12:11:57 loox kernel: usb.c: USB device 6 (vend/prod 0x67b/0x2303) is not claimed by any active driver. Feb 21 12:11:58 loox /etc/hotplug/usb.agent: Setup pl2303 for USB product 67b/2303/100 Feb 21 12:11:58 loox kernel: usb.c: registered new driver serial Feb 21 12:11:58 loox kernel: usbserial.c: USB Serial support registered for Generic Feb 21 12:11:58 loox kernel: usbserial.c: USB Serial Driver core v1.4 Feb 21 12:11:58 loox kernel: usbserial.c: USB Serial support registered for PL-2303 Feb 21 12:11:58 loox kernel: usbserial.c: descriptors matched, but endpoints did not Feb 21 12:11:58 loox kernel: usbserial.c: PL-2303 converter detected Feb 21 12:11:58 loox kernel: usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs) Feb 21 12:11:58 loox kernel: pl2303.c: Prolific PL2303 USB to serial adaptor driver v0.9 Feb 21 12:11:58 loox /etc/hotplug/usb.agent: missing kernel or user mode driver pl2303 -- Dane Johnson - [EMAIL PROTECTED] - http://www.visi.com/~danger/ His body is perfectly spherical, He weareth a runcible hat. --Edward Lear _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
