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How ttyUSB* created on my 3G modem problem

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Operating Systems Linux Ubuntu How ttyUSB* created on my 3G modem problem
# 1  
Old 02-27-2011
How ttyUSB* created on my 3G modem problem
Hi

I would like to ask if someone knows the explaination of the /dev/ttyUSB*. I had a internet connection 3G usb dongle modem and need to restart before it detected the mobile broadband in the network manager. Before i reinstalled the lucyd lynxs i never meet this problem. But after i reinstalled the lucyd lynx i need to put the usb modem first before starting my system.. but if i plug my usb modem in a running state the network manager doesn't detect the mobile network therefore a remedy is plug first and restart.

One thing i notice if i had a working usb modem is i had a /dev/ttyUSB1-4 but if i plug it later and dont have a working usb modem.. i dont have the /dev/ttyUSB*.

I dont know if i this is the cause or the services that doesn't start if a plug the usb in running state..

Hope someone knows and understand my problem.
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LEARN ABOUT NETBSD

irda

IRDAATTACH(8)						    BSD System Manager's Manual 					     IRDAATTACH(8)

NAME

     irdaattach -- attach serial lines to IrDA frame driver

SYNOPSIS

     irdaattach [-d dongle] [-fHhlmnp] ttyname

DESCRIPTION

     irdaattach is used to assign a tty line to an IrDA frame level driver.  The following operands are supported by irdaattach:

     -d dongle	   Sets the dongle type.  The following dongles are supported:

		   none      No dongle

		   tekram    Tekram IR-210B

		   jeteye    Extended Systems JetEye

		   actisys   ACTiSYS IR-220L

		   actisys+  ACTiSYS IR-220L+

		   litelink  Parallax LiteLink

		   girbil    Greenwich GIrBIL

		   The default is none.

     -f 	   Print the name of the IrDA frame device that should be used to access the frames.

     -H 	   Turn on DTR/CTS flow control.  By default, no flow control is done.

     -h 	   Turn on RTS/CTS flow control.  By default, no flow control is done.

     -l 	   Turn on the CLOCAL flag, making it possible to run SLIP on a cable without modem control signals (e.g. DTR, DSR, DCD).

     -m 	   Maintain modem control signals after closing the line.  Specifically, this disables HUPCL.

     -n 	   Do not detach from invoking tty.

     -p 	   Print process id to file.

     ttyname	   Specifies the name of the tty device.  Ttyname should be a string of the form 'ttyXX', or '/dev/ttyXX'.

     Only the super-user may attach a network interface.

     The frame driver is detached by killing the irdaattach process.

EXAMPLES

	   irdaattach tty00
	   ircomm -Y -d `irdaattach -p -f /dev/tty02`

DIAGNOSTICS

     Messages indicating that the specified interface does not exist, the requested address is unknown, or that the user is not privileged but
     tried to alter an interface's configuration.

SEE ALSO

     daemon(3), irframe(4), irframetty(4), slattach(8)

HISTORY

     The irdaattach command appeared in NetBSD 1.6.

BSD
								 December 4, 2001							       BSD