[SOLVED] In your GPRS USB Modem, what is the result of "ls -l /dev/ttyUSB0" ?

floppy_stuttgart · 08-25-2013, 04:02 AM

Hello,
for the reason I gave my modem for few weeks to a colleague (who cannot be contacted), I cannot check something. Can somebody give to me the result of the indicated command to me?
- for your PC with a GPRS Modem
- before dial in and after connection in the internet.
I would like to see how looks the "xwr" rights and if it change after pppd (or wvdial).
Background: I use mknod and would like to know how must be the chmod for my USB GPRS Modem; see http://linux.about.com/od/lsa_guide/a/gdelsa23t01.htm

aus9 · 08-26-2013, 08:10 PM

until you get a better reply

I have an old usb modem that I don't use and have no usb-modeswitch installed ATM

when I first plug it in, its a flip flop so seen as a cd, then I eject its cd "state" then I can use your command
--on a debian system

Code:

$ ls -l /dev/ttyUSB0
ls: cannot access /dev/ttyUSB0: No such file or directory

$ eject sr1

$ ls -l /dev/ttyUSB0
crw------- 1 root root 188, 0 Aug 27 07:58 /dev/ttyUSB0

usb-modeswitch does similar things but you may also need to know

Code:

ls -l /dev/ttyUSB*
crw-rw---T 1 root dialout 188, 0 Aug 27 07:59 /dev/ttyUSB0
crw-rw---T 1 root dialout 188, 1 Aug 27 07:59 /dev/ttyUSB1
crw-rw---T 1 root dialout 188, 2 Aug 27 07:59 /dev/ttyUSB2

for my device, the actual internet was thru usb2

############
rather than a mknod command you could consider an udev rule, but you will need to wait until you know your specific details

here is a rough guide from the past

http://whirlpool.net.au/wiki/?tag=linux_U6T

this wiki was editted by another user, mine is the sidux method
but usb-modeswitch may have that setting now?