Sorry, no modem was detected! Is it in use by another program? GPRS Modem
Don't have a serial port attached to my CPU, so I am using a cable connected to USB port which in turn is connected to a USB to Serial converter which in turn in connected to the GPRS modem.
openSUSE 11.4 64 bit Kernel - 2.6.37.1-1.2-desktop Code:
# dmesg | grep ttyUSB Code:
# lsusb Code:
# wvdialconf /etc/wvdial.conf Code:
~ zgrep -i CONFIG_PPP_MPPE /proc/config.gz Code:
# cat /etc/wvdial.conf This modem has been tested on a Windows machine and it does respond well. The ONLY fields I have edited in wvdial.conf are Modem and Baud. |
I would first check if any kernel module sees it.
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Presuming some kernel module sees the modem, interrogate the port with setserial and ask, or set the baudrate. man setserial is your friend. |
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Code:
linux-trra:~ # lsusb Code:
Bus 005 Device 005: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port |
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Previous versions had a 'kernel module in use: whatever' line. It's probably going to be a kernel issue usb modules handle a usb port, serial modules handle a standard serial port (8250 or 16550) but for usb over serial, there's more modules. Find your kernel config (config-KernelVersion in /boot or .config in the kernel source) and run this check grep CONFIG_USB_SERIAL_PL2303 <your config> to see if it's compiled in or scour the output of 'lsmod' for something that looks like it. If you don't have it, you'll need to recompile the kernel with that in. |
Is there a chance that you need a "null modem" cable (or inline adapter)? (ie maybe the TX and RX lines need to be swapped over). I've seen issues like this when using minicom to connect various network devices (for serial console connectivity).
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