I want to connect a Pi 2 to the web using a 3G Dongle (Huawei e3531). But for some reason I can't get it to work. It is a freshly installed Jessie with update & upgrade done. Modeswitch was installed anyway, so I added ppp.
Plugged in the dongle and checked with 'lsusb', which gave me the expected output of:
Bus 001 Device 004: ID 12d1:14dc Huawei Technologies Co., Ltd.
To get the dongle from storage mode to modem mode I created the file '12d1:1f01' in '/etc/usb_modeswitch.d'. After a reboot lsusb now gives me
Bus 001 Device 005: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem
Which should be correct for modem mode. I was able to ping google dns server more or less good. Sometimes perfectly fine, sometimes with a huge packet loss. But that's about it. Downloading data or connecting to websites is not possible.
If I check 'dmesg' it gives me:
[ 1.707988] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1 [ 1.738779] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 1.748227] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 1.782148] hub 1-0:1.0: USB hub found [ 1.938481] usbhid: USB HID core driver [ 2.225724] usb 1-1: new high-speed USB device number 2 using dwc_otg [ 2.446117] usb 1-1: New USB device found, idVendor=0424, idProduct=9514 [ 2.455984] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 2.466887] hub 1-1:1.0: USB hub found [ 2.745779] usb 1-1.1: new high-speed USB device number 3 using dwc_otg [ 2.856202] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00 [ 2.866292] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 2.950681] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:31:ac:7d [ 8.025679] usb 1-1.5: new high-speed USB device number 4 using dwc_otg [ 8.126848] usb 1-1.5: New USB device found, idVendor=12d1, idProduct=1f01 [ 8.126868] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 8.140409] usb-storage 1-1.5:1.0: USB Mass Storage device detected [ 9.068924] usb 1-1.5: USB disconnect, device number 4 [ 9.305684] usb 1-1.5: new high-speed USB device number 5 using dwc_otg [ 9.407006] usb 1-1.5: New USB device found, idVendor=12d1, idProduct=1001 [ 9.407025] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 9.453255] usbserial: USB Serial support registered for generic [ 9.468652] usbserial: USB Serial support registered for GSM modem (1-port) [ 9.470380] usb 1-1.5: GSM modem (1-port) converter now attached to ttyUSB0 [ 9.471114] usb 1-1.5: GSM modem (1-port) converter now attached to ttyUSB1 [ 9.471821] usb 1-1.5: GSM modem (1-port) converter now attached to ttyUSB2
'ifconfig' has only 'eth0' and 'l0'. There was a single time between two of the uncountable reboots while testing, where I got a ppp0 with a 134... IP address. But connectivity was the same.
Getting frustrated I tried approaches like this one: https://github.com/EMnify/doc/wiki/How-to-use-a-Huawei-E3531-in-Modem-Mode
But without any success. Does anyone has an idea what I am missing?
EDIT: Just tested the dongle on a Windows 7 and a Windows 10 computer. On both it is not working. Like on the Pi I am able to ping the google DNS servers, but not able to browse any sites in the browser.
EDIT2: Just bought a cheap lebara SIM with a few hundred megabytes of data for testing. No problem at all. Something seems to be wrong between the SIM and the Dongle...