LinuxQuestions.org - USB devices issue on Slack 12.1

Hi,

I have two USB serial devices on my Dell Latitude D430 which when connected separately work fine - however they don't when all connected.

Device 1: Dell Wireless 5505 broadband adapter
Device 2: Prolific Tech. USB to serial adapter

To get the broadband adapter to work I added the following line to /etc/rc.d/rc.modules

Code:

/sbin/modprobe usbserial vendor=0x413c product=0x8116

This then creates two devices, ttyUSB0 and ttyUSB1 (which is how it should be).

However, if I add the line:

Code:

/sbin/modprobe usbserial vendor=0x067b product=0x2303

it fails to find my USB-serial adapter (I was hoping for it to create ttyUSB2). But if I comment-out the line for the broadband adapter and reboot, it sees the USB-serial adapter perfectly (creates ttyUSB0).

How can I get all three devices recognized at the same time, without having to manually edit rc.modules?

Any help would be appreciated.

Mark.