On 21/11/12 04:18, Sebastian Lipp wrote:

Hey there!

I've got a problem with my Huawei E220 (not entirely sure about this) 3G modem stick. It used to work for several days without any issues but someone closed my laptop's lid so that it slept away and since I can't reach any remote machine.

Everything seems to be normal, even the "defaulting to 10.64.64.64" message by pppd is in the logs from times it worked... I played around with the routes but was not able to solve my problem.

pppd connects successfully and sets the routes and DNS servers. Interesting is that I don't get answers to any ping. Even the DNS servers don't answer but my machine resolves domain names. Putting for example googles DNS server 8.8.8.8 into /etc/resov.conf doesn't help.

I even tried to kick wvdial by following https://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd_alone. Everything seems to work identically. The problem is also the same.

I dont't know how to solve this problem. Perhaps someone here can help me. Below are those informations I thought would be helpful. I will happily provide any further information that might help.

Thanks in advance.

[bacuh@eee ~]$ dmesg [12585.668857] usb 1-1: new high-speed USB device number 9 using ehci_hcd [12585.809389] option 1-1:1.0: GSM modem (1-port) converter detected [12585.809795] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0 [12585.810369] option 1-1:1.1: GSM modem (1-port) converter detected [12585.810645] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1 [12585.811697] scsi17 : usb-storage 1-1:1.2 [12585.813594] scsi18 : usb-storage 1-1:1.3 [12586.817410] scsi 17:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 [12586.822239] scsi 18:0:0:0: Direct-Access HUAWEI MMC Storage 2.31 PQ: 0 ANSI: 2 [12586.828280] sr0: scsi-1 drive [12586.835202] sr 17:0:0:0: Attached scsi CD-ROM sr0 [12586.837277] sd 18:0:0:0: [sdb] Attached SCSI removable disk

[bacuh@eee ~]$ cat /etc/wvdial.conf [Dialer aldi_mf] Modem = /dev/ttyUSB0 #Init1 = AT+CPIN=XXXX # not used anymore Init2 = ATZ Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Init4 = AT+CGDCONT=1,"IP","internet.eplus.de" Stupid Mode = 1 Modem Type = Analog Modem Phone = *99***1# ISDN = 0 Username = eplus Dial Command = ATDT Password = gprs Baud = 460800

[bacuh@eee ~]$ sudo wvdial aldi_mf [sudo] password for bacuh: --> WvDial: Internet dialer version 1.61 --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Sending: AT+CGDCONT=1,"IP","internet.eplus.de" AT+CGDCONT=1,"IP","internet.eplus.de" OK --> Modem initialized. --> Sending: ATDT*99***1# --> Waiting for carrier. ATDT*99***1# CONNECT --> Carrier detected. Starting PPP immediately. --> Starting pppd at Tue Nov 20 15:37:04 2012 --> Pid of pppd: 13809 --> Using interface ppp0 --> local IP address 10.140.52.61 --> remote IP address 10.64.64.64 --> primary DNS address 212.23.115.132 --> secondary DNS address 212.23.115.148

[bacuh@eee ~]$ sudo tail /var/log/messages.log Nov 20 15:37:04 localhost pppd[13809]: pppd 2.4.5 started by bacuh, uid 0 Nov 20 15:37:04 localhost pppd[13809]: Using interface ppp0 Nov 20 15:37:04 localhost pppd[13809]: Connect: ppp0 <--> /dev/ttyUSB0 Nov 20 15:37:04 localhost pppd[13809]: CHAP authentication succeeded Nov 20 15:37:04 localhost pppd[13809]: CHAP authentication succeeded Nov 20 15:37:06 localhost pppd[13809]: Could not determine remote IP address: defaulting to 10.64.64.64 Nov 20 15:37:06 localhost pppd[13809]: local IP address 10.140.52.61 Nov 20 15:37:06 localhost pppd[13809]: remote IP address 10.64.64.64 Nov 20 15:37:06 localhost pppd[13809]: primary DNS address 212.23.115.132 Nov 20 15:37:06 localhost pppd[13809]: secondary DNS address 212.23.115.148

[bacuh@eee ~]$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 10.64.64.64 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0

[bacuh@eee ~]$ ping google.de PING google.de (173.194.34.95) 56(84) bytes of data. ^C --- google.de ping statistics --- 5 packets transmitted, 0 received, 100% packet loss, time 3999ms

[bacuh@eee ~]$ cat /etc/resolv.conf nameserver 212.23.115.132 nameserver 212.23.115.148

What CHAT scripts are you using to connect? And what’s the content of your /etc/resolv{,.head,.tail}? I don’t know if it will help, but I uploaded the scripts in the wiki for netcfg so it will connect via pppd as an AUR package[1], and that gives lots of debug output from the modem. You’ll probably need to create a few extra files with the information of your connection (APN, pin, mode, etc). For the record, I couldn’t get my USB modem to connect any other way. [1] https://aur.archlinux.org/packages/netcfg-ppp-mobile-git/

Hello, 2012/11/20 Sebastian Lipp :

--> Using interface ppp0 --> local IP address 10.140.52.61 --> remote IP address 10.64.64.64 --> primary DNS address 212.23.115.132 --> secondary DNS address 212.23.115.148

Can you ping your gateway (10.64.64.64)? -- Krzysztof Warzecha