Problem with my 3Com 905c

[Stefano Vettorazzi]

----------------------------------------
> From: stefanovettorazzi at hotmail.com
> To: ubuntu-users at lists.ubuntu.com
> Subject: RE: Problem with my 3Com 905c
> Date: Wed, 9 Sep 2009 17:34:02 -0300
>
>
> ----------------------------------------
>> To: ubuntu-users at lists.ubuntu.com
>> From: glgxg at sbcglobal.net
>> Subject: Re: Problem with my 3Com 905c
>> Date: Wed, 9 Sep 2009 10:48:52 -0700
>>
>> On 09/08/2009 04:18 PM, Stefano Vettorazzi wrote:
>> ..
>>>
>>> No. The results are slower only when I make "ping xxxx" to internet.
>>> The problem isn't of my ISP because in Windows (in the same machine)
>>> work beautiful.
>>
>> Please do not post in html on this list, plain text is preferred :-)
>>
>> Is there any particular reason you are using the 2.6.30 kernel? When you
>> said that you 'compiled' the 2.6.30 kernel, I'm guessing that you did
>> this with a standard Jaunty install. Do you get the same when you use
>> the standard Jaunty kernel?
>>
>> Can you please post the output of:
>>
>> $ ifconfig
>>
>> The first 3 lines of:
>>
>> $ cat /etc/hosts
>>
>> All of:
>>
>> $ cat /etc/network/interfaces
>>
>> Also please advise what the mtu settings are on the router/modem, and
>> what the recommended mtu settings are from your ISP. It is possible that
>> the default mtu setting of 1500 on Ubuntu is causing fragmentation. See:
>> http://permalink.gmane.org/gmane.linux.ubuntu.user/188941
>> for how you can test to see if the mtu setting is the problem.
>>
>>
>>
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>
> I have downloaded the linux kernel source from kernel.org and I have followed various steps that I have readed in a manual.
> I can work with a crossover connection to other machine (I have moved 4GB of this machine to other machine), and I can connect me to internet.
> If you don't know: the 3Com adapter is onboard. It can be the difference with your card.
> Things that I have tried, and I remember today (with the same result) are:
> - Disable IPV6
> - Disable tcp_window_scalling, tcp_timestamps and tcp_sack
> - Install another Ubuntu's version (7.10 Desktop, 8.04 LTS Desktop, 9.04 Server, 9.04 Desktop)
> - Install Debian
> - Install Mandrake 8.1
> - Boot from the Ubuntu live CD (7.10,8.04,9.04)
> - Change the speed and the duplex mode
> - Autoconfigure the NIC with an 3Com tool
> - Add 3c59x to /etc/modules
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I go to read http://permalink.gmane.org/gmane.linux.ubuntu.user/188941.
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