Comments on: How to fix Huawei E620 USB 3G Modem in Ubuntu 9.10 Karmic Koala

By: google.com/profiles/vi…

google.com/profiles/vi… — Sat, 13 Feb 2010 13:09:52 +0000

I did, with modem connected:

sudo modprobe -r option
sudo modprobe -r usbserial
sudo modprobe usbserial vendor=0x12d1 product=0×1003

and then “safely remove drive” on the mobile connect drive. works, but you have to do it every time, and the usbserial, option and vendor/prod id may change if other usb-peripherals are connected.

cheers!

By: Glen Scott

Glen Scott — Tue, 09 Feb 2010 16:26:53 +0000

Hi Tracey, Rudolfo, glad it helped!

By: Tracey

Tracey — Mon, 08 Feb 2010 21:04:31 +0000

Thanks so much for this. My modem is a Huawei E156G and it works fine with kernel 2.6.31-11. I’m fairly new to Linux so really appreciate your step-by-step instructions. Many thanks.

By: Rudolfo Schulze

Rudolfo Schulze — Sat, 06 Feb 2010 18:15:38 +0000

Thanks for your info. I had quite the same kind of trouble using a ZTE MF626 from VIVO (Brazil). The connection didnÂ´t last for long and the device indication LED was simple extinguishing. The device was disappearing from the box. I follow your instructions to upgrade kernel (I picked 2.6.33-020633rc6) and after that it is running smooth.

By: chris snow

chris snow — Fri, 05 Feb 2010 07:46:52 +0000

I have the same problem with a K3565 Revision 2 – it\\\’s detected as E620. Still no internet!

By: vincent

vincent — Thu, 14 Jan 2010 22:07:32 +0000

My output of lsusb is, you can see it is E620, but the label on the device is E1550:-

Bus 001 Device 003: ID 12d1:1001 Huawei Technologies Co., Ltd. E620 USB Modem
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

my /var/log/messages is the same as what you posted, but there is still no internet connection after I unplugged and plugged in, reboot etc.
Well, I just leave this info here to see if anybody has any solution.

By: Glen Scott

Glen Scott — Sun, 10 Jan 2010 15:53:53 +0000

Hi Vincent

If you have upgraded the kernel perhaps you have a different issue? As I have not had the same problem I can’t tell you how to fix it, but I can suggest looking at the following log files for clues while you try to connect and/or plug/unplug the USB device:

/var/log/messages /var/log/daemon.log
(Ubuntu has a good tool for this under System –> Administration –> Log File Viewer)

Also: run the ‘dmesg’ command and check the output.

Anything interesting in the log files or dmesg output, google and see what comes up – others might have a solution.

By: vincent

vincent — Sun, 10 Jan 2010 15:07:25 +0000

thanks for your info, however i have a different sets of problem. the gsm modem i have indicated it is huawei e1550, but when i run lsusb, the terminal showed it is huawei e620. i tried the methods posted by u but the connection still could not be established. I am using ubuntu karmic. any help?