Arch Linux

ambalex

Member

Registered: 2004-11-17

Posts: 84

help with UMTS pcmcia card

Hi!

I've been trying to use my pcmcia Huawei e600 2G/3G card on Arch, unfortunately without success.

So, what I've been doing:
first, I plug in the card and load the modules:

modprobe serial_cs
modprobe usbserial vendor=0×12d1 product=0×1001

Then I use gcom to register on the network
and it registers just fine, giving the signal strength

I use pppd for the connection, and have the settings as shown on the page
http://ergonomica.wordpress.com/category/ubuntu-linux/
(which is documentation for the card I use and the network I want to connect to).
But before doing

pon

, I need to do

mknod /dev/ppp c 108 0

then I do pon, and monitoring what happens with

tail /var/log/messages.log

, I can read the following:

Feb 20 23:00:35 Attila pppd[9331]: Serial connection established.
Feb 20 23:00:35 Attila pppd[9331]: Using interface ppp0
Feb 20 23:00:35 Attila pppd[9331]: Connect: ppp0 <--> /dev/ttyUSB0
Feb 20 23:00:36 Attila pppd[9331]: CHAP authentication succeeded
Feb 20 23:00:36 Attila pppd[9331]: CHAP authentication succeeded
Feb 20 23:00:41 Attila pppd[9331]: Could not determine remote IP address: defaulting to 10.64.64.64
Feb 20 23:00:41 Attila pppd[9331]: local  IP address 78.130.77.115
Feb 20 23:00:41 Attila pppd[9331]: remote IP address 10.64.64.64
Feb 20 23:00:41 Attila pppd[9331]: primary   DNS address 62.169.67.172
Feb 20 23:00:41 Attila pppd[9331]: secondary DNS address 62.169.67.171
Feb 20 23:12:41 Attila chat[9495]: ATZ^M^M
Feb 20 23:12:41 Attila chat[9495]: OK
Feb 20 23:12:41 Attila chat[9495]:  -- got it
Feb 20 23:12:41 Attila chat[9495]: send (ATDT*99***1#^M)
Feb 20 23:12:41 Attila chat[9495]: expect (CONNECT)
Feb 20 23:12:41 Attila chat[9495]: ^M
Feb 20 23:12:41 Attila chat[9495]: ATDT*99***1#^M^M
Feb 20 23:12:41 Attila chat[9495]: CONNECT
Feb 20 23:12:41 Attila chat[9495]:  -- got it
Feb 20 23:12:41 Attila chat[9495]: send (\d)

I try to ping google

ping www.google.pt

but ping returns that google is an unknown host.

However, when using

pppstats

, I can see that packages are sent and received:

      IN   PACK VJCOMP  VJUNC  VJERR  |      OUT   PACK VJCOMP  VJUNC NON-VJ
    2128     34      0      0      0  |     2417     35      0      0     35
      IN   PACK VJCOMP  VJUNC  VJERR  |      OUT   PACK VJCOMP  VJUNC NON-VJ
   11635    188      0      0      0  |    14376    228      0      0    228
       0      0      0      0      0  |       60      1      0      0      1
     120      2      0      0      0  |      180      3      0      0      3
     120      2      0      0      0  |      180      3      0      0      3
     183      3      0      0      0  |      271      4      0      0      4
      60      1      0      0      0  |      120      2      0      0      2
      60      1      0      0      0  |        0      0      0      0      0
       0      0      0      0      0  |        0      0      0      0      0
     144      3      0      0      0  |      120      3      0      0      3
       0      0      0      0      0  |        0      0      0      0      0
     224      2      0      0      0  |      280      2      0      0      2
     112      1      0      0      0  |      140      1      0      0      1
       0      0      0      0      0  |        0      0      0      0      0
       0      0      0      0      0  |        0      0      0      0      0
     117      1      0      0      0  |      145      1      0      0      1
     330      4      0      0      0  |      370      4      0      0      4
      48      1      0      0      0  |       40      1      0      0      1

and here is the output of

ifconfig

:

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:78.130.77.115  P-t-P:10.64.64.64  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:125 errors:0 dropped:0 overruns:0 frame:0
          TX packets:194 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:9272 (9.0 Kb)  TX bytes:15351 (14.9 Kb)

So, it looks to me that there is indeed communication.
any suggestion?

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 1,872

Re: help with UMTS pcmcia card

Seems like DNS is your only issue.
Symlink /etc/resolv.conf to /etc/ppp/resolv.conf, done.

---

I hate sigs. This one only exists to remind myself to get an avatar.

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,604

Re: help with UMTS pcmcia card

Re mknod etc, all you need to do there is load the ppp_generic module, and udev will create the device for you.

ambalex

Member

Registered: 2004-11-17

Posts: 84

Re: help with UMTS pcmcia card

hi! thanks for the answers.

tomk, loading the ppp_generic module did indeed make useless the mknod command.

byte, symlinking /etc/resolv.conf to /etc/ppp/resolv.conf did not help me, I get exactly the same results.

I need further help

ambalex

Member

Registered: 2004-11-17

Posts: 84

Re: help with UMTS pcmcia card

somehow wvdial was able to do what ppp couldn't, even though wvdial uses pppd.
probably some mistake in the configuration file.

Last edited by ambalex (2008-03-12 12:59:49)

schivmeister

Developer/TU

From: Singapore

Registered: 2007-05-17

Posts: 960

Website

Re: help with UMTS pcmcia card

you need a client to dial in, and that's what wvdial is for.

---

I need real, proper pen and paper for this.

ambalex

Member

Registered: 2004-11-17

Posts: 84

Re: help with UMTS pcmcia card

i thought ppp would do that.

patroclo7

Member

From: Bassano del Grappa, ITALY

Registered: 2006-01-11

Posts: 907

Re: help with UMTS pcmcia card

pppd is actually a client, so it should suffice, but wvdial is very good in guessing the right configuration needed by a modem

---

Mortuus in anima, curam gero cutis

schivmeister

Developer/TU

From: Singapore

Registered: 2007-05-17

Posts: 960

Website

Re: help with UMTS pcmcia card

Maybe you need to edit a few more things for pppd to connect properly, but for wvdial it's just one file.

---

I need real, proper pen and paper for this.

ambalex

Member

Registered: 2004-11-17

Posts: 84

Re: help with UMTS pcmcia card

Hello again.

I've been using the card to connect to the internet. Everything works fine, however, sometimes, when I browse the web, my computer freezes.
When this happens, I have no other way to get back working except shutting down the computer pressing the 'power' button. And this isn't a nice thing to do, is it? after doing that, I have the message: '/dev/sda5 not cleanly unmount, check forced', and after the check, I need to make a e2fsck, and there is always something with the inodes I do not understand (which most likely is not nice either).

Anyone knows what happens when the computer freezes?