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Date:      Tue, 12 Aug 2008 13:49:18 +0200
From:      Martin Sugioarto <nakal@web.de>
To:        freebsd-stable@freebsd.org, Josh Paetzel <josh@tcbug.org>
Cc:        Markus Vervier <markus@vervier.info>, Jack Vogel <jfvogel@gmail.com>
Subject:   Re: em(4) on FreeBSD is sometimes annoying
Message-ID:  <1267889400@web.de>

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> For what it's worth, I have a T60 that dual boots 6.3-R/amd64 and 7.0-R/=
i386=20
> and neither install has this problem.  I can cold boot it with the NIC=20
> unplugged, plug in a cable, I get a link light and ifconfig em0 goes to=20
> active, dhclient em0 gets an IP successfully.
>=20

Did you try to run /etc/rc.d/netif start after you've booted your laptop u=
nplugged=3F

Try to do that, THEN connect the cable.

The problem appears ONLY in this situation. And it's quite common, because=
 you often
use your laptop with wireless network and suddenly you decide to connect i=
t to
wired network without having to switch the laptop off.

My NIC is in such a state that I am forced to switch it off, or else I don=
't get
link signal.

I don't think it's a BIOS firmware problem (I have tried every update).

I can remember that Linux had this issues, too a while ago. It works there=
 now,
but FreeBSD is still the same. Please read the steps how I cause this situ=
ation.
It appears ONLY when you do it like I described it.

I've seen that people first boot with plugged in cable and start to play w=
ith dhclient.
Both is wrong.

Correct steps to reproduce is:
You have to start with unhooked interface AND the line ifconfig=5Fre0=3D"DHCP"=
 in /etc/rc.conf.

Then wait until you can login and try to attach the cable.


--
Martin

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