linux-kernel - Re: Realtek 8168D: no active link (2.6.29.2)

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Message-Id: <200905181239.n4ICduKf015780@mercury.physics.adelaide.edu.au>
Date:	Mon, 18 May 2009 22:09:56 +0930 (CST)
From:	Jonathan Woithe <jwoithe@...sics.adelaide.edu.au>
To:	romieu@...zoreil.com (Francois Romieu)
Cc:	jwoithe@...sics.adelaide.edu.au (Jonathan Woithe),
	dave@...dillows.org (David Dillow), linux-kernel@...r.kernel.org,
	edward_hsu@...ltek.com.tw (Edward Hsu)
Subject: Re: Realtek 8168D: no active link (2.6.29.2)

Hi Ueimor

> > Indeed.  To follow up on this, as per my earlier email I left the machine
> > disconnected from the mains all night - so it was truly "off" for about 9
> > hours.  Just before coming to work I flicked it on and the "link" LED lit
> > almost immediately.  So whatever the Realtek driver did, the resulting
> > status would appear to be stored in some kind of non-volatile memory.  While
> > it would appear that this has worked around the problem for me, it would be
> > nice if the mainline driver could do this itself.
> 
> The attached patch is not complete but can you give it a try and check if
> it makes a difference ?

Ok, I've tried this against 2.6.30-rc5.  The practical upshot is that it has
had a positive effect.  It turns out that the Realtek driver had enabled the
interface only at 100 Mbps (it's a new mainboard and I didn't fully
appreciate the significance of the speed LED colour).  This patch allows
Linux to set the PHY to 1 Gbps.  The interface itself has had limited
testing tonight, but first impressions are excellent.  Thanks for this.

If you need further patches tested just drop me a line.

Regards
  jonathan
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