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I have a dual booted Windows XP and Ubuntu 10.10 box (AMD64) and i have an unusual problem in that after connecting to the internet on Windows. I can not connect using Ubuntu.

I don't believe it is actually a problem with configuring my Ubuntu connections because when I get up in the morning Ubuntu connects without any problem - this problem only exists (and persists for at least several hours), if I try to connect using Ubuntu immediately after connecting using Windows, so I do not know how long the problem actually lasts because I usually just go to bed and then in the morning I can connect without problems.

It is not problem with my provider's service as I have a second Ubuntu 10.10 box which I manually connect and works even when the dual booted one (on Ubuntu) won't. It is a particular problem with the dual booted box. A power down reset does not solve the problem.

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Could be dhcp issue. Eg if your modem/router/etc's dhcp assign an IP address and at the same time links it to a hostname. Do you use same hostname in both Ubuntu and XP? –  papukaija Jan 30 '11 at 16:55
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It does sound like a ISP issue about DHCP. You need to provide details of your provider (which ISP/Country). I assume you have a USB ADSL modem, is that right? –  user4124 Jan 30 '11 at 17:14
    
On checking, I see that the hostname in Windows is different from that in Ubuntu. Windows is ****** and Ubuntu is ******-desktop. Perhaps I should temporarily reset the hostname for Ubuntu to match that of Windows for any Ubuntu session immediately following a Windows session? –  babelproofreader Jan 30 '11 at 17:47
    
@user4124 My provider is a local cable TV company (TV Slupsk) in Poland: the internet connection is part of a basic subscription package. –  babelproofreader Jan 30 '11 at 17:51
    
I have changed the hostname in XP to match that in Ubuntu, but this does not solve the problem. –  babelproofreader Jan 31 '11 at 10:59

1 Answer 1

it could be a problem with your dhcp server witch release a adress for a mac adress only every hours, try configuring fix ip address on the host.

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Mac address is OS independent... –  papukaija Jan 31 '11 at 20:56

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