Hot Plug wireless Modems

[Nils Kassube]

Ron Ellison wrote:
> I can plug my Dell modem into Ubuntu, but I must Load USBSERIAL by
> manual command.
> The command is ignored if USBSERIAL is in Use.
> So I must unplug every device that uses USB-serial,
> and then install my modem.  Then load USB-serial.
> Then finally install my other devices.

Can you clarify which module you really mean? First you are talking 
about "USBSERIAL" and then "USB-serial" but in the standard kernel 
package none of them exist. However there IS a module "usbserial". Did you 
perhaps build a special module for your device? When referring to 
modules, please take care of exact spelling and remember that file names 
are case sensitive.

OTOH, it should not be necessary to load modules manually, that should be 
done by udev automatically when the device is connected to your machine. 
Maybe there is a rule missing for your device? Furthermore it shouldn't 
be necessary to load a module a second time if there are several devices 
which use the same module. Do you have to enter options when loading the 
module which are specific for your modem?

> "greg k-h" told me...
>
> And you should NOT use the basic usbserial module, but instead use the
> proper sierra or option module.

There is a module named "sierra" and a module named "option". Probably one 
of those is meant - did you try to load one them instead? However we can't 
tell you which because you didn't tell us what hardware you are talking 
about. A "Hot Plug wireless Modem" or a "Dell modem" can be many things. 
Well, maybe not if you are familiar with Dell products. To clarify how 
your machine can see your modem, please open a terminal and enter the 
command

lsusb

while your modem is unplugged. Then plug it in and repeat the command. 
There should be one file different. It usually looks like this:

Bus 006 Device 002: ID 046d:c313 Logitech, Inc.

Well, this example is a keyboard, not a serial interface, but the line 
looks similar. Copy and paste that line to your mail and we can possibly 
help you further. Another option would be to use the ID from the line and 
try to find the answer with Google. The ID in the example above would 
be "046d:c313".


Nils