Slow connection - need a little guidance

Hello! After setting up my wireless connection(mobile broadband - through usb) I stumbled upon a problem, and that is the speed. I’ve been googling for several hours trying to find a solution, one of them being disabling ipv6 which has not succeeded.

Another possible solution I came across (I am not sure whether it is for wired connection of wireless) was modifying the /etc/sysconfig/network/ifcfg-eth0 and change the following line:

ETHTOOL_OPTIONS='speed 10 duplex full'

BUT unfortunately I was not able to grant myself write access to that file. I have tried using the chmod command on the path but the output was: Operation not permitted. I have tried to use the “vi” command following the instructions on How do I edit files on the command line? | HowtoForge - Linux Howtos and Tutorials but even when I got out of insert mode, the “x” key for saving was still deleting the text. I’ve also installed “pico” and after trying to save the edited file, I got: "Cannot open file for writing: Permission denied. I believe this problem might affect me in the future. Anyway.

I’ve read the http://forums.opensuse.org/english/get-technical-help-here/wireless/410319-getting-your-wireless-work.html, the connection speed section, but got stuck at the

/usr/sbin/iwconfig wlan0 | grep Mb

being unable to identify my device’s name (section two of the thread). I also took ImageShack® - Online Photo and Video Hosting of the ZTE(internet usb device) hardware information on YaST in case it helps.

I apologize for the length of the links, but I couldn’t find any way to enable HTML within my posts.
Please, if you have an idea, explain it in detail, I am not even an medium-experienced linux user.
If I violated any rule of the forum (especially the links part and possible advertising to other sites - rule I have not encountered here) please punish me accordingly.
Thanks in advance.

Hello,

This being your first post, welcome here.

You forgot to mention which level of openSUSE you use and which desktop environment (KDE, Gnome, other).

Of course you can not edit system configuration files while being a normal user. You need to be the Superuser (root) to be able to do that. This has nothing to do with the editor you use. It is simply protected by the system. This is some documentation on how to “become root”: SDB:Login as root - openSUSE
In your case I would use (this is for KDE as I do not know what you use) Execute Command from the main Kemenu. And then type

kdesu kwrite /etc/sysconfig/network/ifcfg-eth0

Allways make backup copies of such sorts of files before you start changing them! And I would wait before doing such sorts of experiments to first see if any advice is given here.

Thank you for your reply! I will try that out and come back with the results. It shouldn’t be too much of a problem since it’s just the network, I should be able to boot even if I mess up that file, right ? I’ll just revert the changes or delete the newly added line.
I also apologize. I intended to edit my post so that I can add that piece of information but the 10-minutes limit for editing posts disagreed.
I’m running on SuSe 12.1 KDE (installed via CD).

Here is the output of the “lsusb” command:



Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub 
Bus 001 Device 003: ID 04f2:b209 Chicony Electronics Co., Ltd
Bus 001 Device 004: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
Bus 002 Device 004: ID 19d2:0117 ONDA Communication S.p.A.  

According to what is written in the sticky post(getting your wireless to work), I’ve looked up in the hardware information for the kernel drive name in the wireless subcategory, found out that it is called “ath9k”. The output of the /usr/sbin/iwconfig ath9k | grep Mb is

 ath9k        No such device

I’m doing my best to gather more information.

On 08/30/2012 09:16 AM, revender79 wrote:
>
> Here is the output of the “lsusb” command:
> Code:
> --------------------
>
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
> Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
> Bus 001 Device 003: ID 04f2:b209 Chicony Electronics Co., Ltd
> Bus 001 Device 004: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
> Bus 002 Device 004: ID 19d2:0117 ONDA Communication S.p.A.
> --------------------
> According to what is written in the sticky post(getting your wireless
> to work), I’ve looked up in the hardware information for the kernel
> drive name in the wireless subcategory, found out that it is called
> “ath9k”. The output of the /usr/sbin/iwconfig ath9k | grep Mb is
> Code:
> --------------------
> ath9k No such device
> --------------------
> I’m doing my best to gather more information.

The file eth0-ifcfg is used to set parameters for a wired interface. It has
nothing to do with any kind of wireless.

Your wireless broadband device is the one with USB ID of 19d2:0117. It is the
“ZTE AX226 WIMAX MODEM”, not “ONDA Communication S.p.A.” as it says in the lsusb
output. Linux uses the standard USB serial driver for it.

I do not have any experience with WIMAX - I only use traditional 2.4 and 5 GHz
devices. The only thing I can suggest is using Google to see what people have
done to speed up WIMAX connections under Linux.