netdev - Re: Bug#614622: linux-image-2.6.37-1-686: atl2 NIC claims NO CARRIER after suspend/resume; rmmod+insmod fixes the problem

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Date:	Tue, 22 Feb 2011 20:57:55 -0500
From:	Daniel Kahn Gillmor <dkg@...thhorseman.net>
To:	Xiong Huang <Xiong.Huang@...eros.com>
CC:	Ben Hutchings <ben@...adent.org.uk>,
	Jay Cliburn <jcliburn@...il.com>,
	Chris Snook <chris.snook@...il.com>,
	"614622@...s.debian.org" <614622@...s.debian.org>,
	Cloud Ren <Cloud.Ren@...eros.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Bug#614622: linux-image-2.6.37-1-686: atl2 NIC claims NO CARRIER
 after suspend/resume; rmmod+insmod fixes the problem

Hi Xiong--

On 02/22/2011 08:38 PM, Xiong Huang wrote:
>    What I mean is to check if the cable link (you can check the peer link LED if your onboard NIC haven't) is ON.
> If the cable link is ON, we may focus on software layer :)

the peer (mini-switch) link LED stays off, regardless of unplug/replug
of the cable, power-cycling the mini-switch, or of tweaking the
interface via:

 ip link set eth0 down
 ip link set eth0 up

However, the peer link LED turns on immediately when i do:

 modprobe -v -r atl2
 modprobe -v atl2

hope this is useful info,

	--dkg




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