Dean Hamstead wrote:
do you have some devices in /dev/ of the name ttyUSB* or something to that effect.
Yes, /dev/usb/ttyUSB0 etc.
try opening a minitcom or gtkterm or something on it and see if you can talk to the modem. perhaps linux is loading everything aok but you just need to find the device
The modem doesn't powered on. I.E the power light doesn't show (it's a bus powered device), As I understand it, the modem won't "power up" until I send it something on the USB port. But obviously it's powered up enough to reply to lsusb.
I've tried minicom but no response, I have a normal serial modem on com1 and minicom sees that on /dev/ttyS0 no problems, but there's no response from /dev/usb/ttyUSB0. As lsusb reports it as "Bus 001 Device 005" I tried the other ttyUSB devices but no joy.
If I enter minicom with no args it defaults to /dev/ttyS0, I then edit the serial device to point to /dev/usb/ttyUSB0 but nothing happens. However if I save the config as usbtty1 for example, then when I re-start minicom this happens;
# minicom usbtty1 Device /dev/usb/ttyUSB1 lock failed: No such file or directory.
Yet the device does exist,
# ls -l /dev/usb/ttyUSB?
crw------- 1 root root 188, 0 Feb 24 2004 /dev/usb/ttyUSB0 crw------- 1 root root 188, 1 Feb 24 2004 /dev/usb/ttyUSB1 crw------- 1 root root 188, 2 Feb 24 2004 /dev/usb/ttyUSB2 crw------- 1 root root 188, 3 Feb 24 2004 /dev/usb/ttyUSB3 crw------- 1 root root 188, 4 Feb 24 2004 /dev/usb/ttyUSB4 crw------- 1 root root 188, 5 Feb 24 2004 /dev/usb/ttyUSB5 crw------- 1 root root 188, 6 Feb 24 2004 /dev/usb/ttyUSB6 crw------- 1 root root 188, 7 Feb 24 2004 /dev/usb/ttyUSB7 crw------- 1 root root 188, 8 Feb 24 2004 /dev/usb/ttyUSB8 crw------- 1 root root 188, 9 Feb 24 2004 /dev/usb/ttyUSB9
So I'm assuming that the kernel module is wrong, I.e the file exists as an inode in the directory structure but the kernel isn't connected to it. lsmod shows cdc_acm loaded but not used.
# lsmod Module Size Used by cdc_acm 7328 0 ...
Gotta be the wrong kernel module, so is there a generic module for usb serial or does it have to be a conexant specific module (in which case there's no hope for these modems)?
Surely someone must have connected a usb telephony modem to a linux box somewhere.
I'd really like to be able to use USB modems on linux as the old serial are getting harder to get and PC hardware generally doesn't come with serial ports anymore. Also the bus powered device saves on having to have the tangle of wires and power transformers all plugged into a power board.
At this point I'm advocating a conspirocy theory that MS are deliberately destroying *nix's ability to support any modem by the replacement of serial by USB! hey I wouldn't be so paranoid if people weren't picking on me ;-)
Cheers
P. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
