From: "Norman Rieß" <norman@smash-net.org>
To: Norman Ramsey <nr@cs.tufts.edu>
Cc: linux-laptop@vger.kernel.org
Subject: Re: gigabit ethernet on Thinkpad X300?
Date: Fri, 19 Sep 2008 10:00:25 +0200 [thread overview]
Message-ID: <48D35C19.7070206@smash-net.org> (raw)
In-Reply-To: <20080919021535.1FE01E80FD@jindo.eecs.harvard.edu>
Norman Ramsey schrieb:
> I've just booted kernel 2.6.26 (Debian lenny) on my new Thinkpad X300.
> Things seem working OK so far except I can't get gigabit ethernet.
> Output from ethtool says:
>
> Settings for eth0:
> Supported ports: [ TP ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 100Mb/s
> Duplex: Full
> Port: Twisted Pair
> PHYAD: 1
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: pumbag
> Wake-on: g
> Current message level: 0x00000001 (1)
> Link detected: yes
>
>
> As you can see both the hardware and the link support full duplex
> 1000baseT, but I'm getting only 100Mb/s (confirmed by lights on switch).
>
> I tried
>
> sudo ifconfig eth0 media 1000baseT
>
> but that media type isn't even recognized.
>
> I also tried
>
> sudo ethtool -s eth0 speed 1000
>
> but this seems to have broken the ethernet port entirely
> (although a reboot brings it back).
>
> Does anybody have any ideas?
>
>
> Norman
>
> P.S. After all this messaing around, it now negotiates down to 10Mb/s.
> Booting 2.6.24 seems to get back to 100Mb/s.
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>
I had a simmilar problem once. Turned out my Linksys Gigabit Switches
didn´t quite like to work with Intel and Realtek NICs. Only Marvel could
get GiBit speed. All else negotiated at 100 and 10.
I tried D-Link Switches an had GiBit on all NICs again.
Regards
Norman (also)
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prev parent reply other threads:[~2008-09-19 8:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 2:15 gigabit ethernet on Thinkpad X300? Norman Ramsey
2008-09-19 8:00 ` Norman Rieß [this message]
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