From mboxrd@z Thu Jan 1 00:00:00 1970 From: Willy Tarreau Subject: Re: Marvell 88E8056 gigabit ethernet controller Date: Sat, 18 Aug 2007 14:17:14 +0200 Message-ID: <20070818121714.GA28247@1wt.eu> References: <20070818053812.GP6002@1wt.eu> <244053.17817.qm@web38913.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Stephen Hemminger , linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: Kevin E Return-path: Received: from 1wt.eu ([62.212.114.60]:1739 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750759AbXHRMZF (ORCPT ); Sat, 18 Aug 2007 08:25:05 -0400 Content-Disposition: inline In-Reply-To: <244053.17817.qm@web38913.mail.mud.yahoo.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Sat, Aug 18, 2007 at 04:45:26AM -0700, Kevin E wrote: > > --- Willy Tarreau wrote: > > > No Stephen, look again, he says that moving the > > video card into the broken > > system does not change anything. > > Correct, I've used three different video cards in the > broken machine. I've used an old PCI vid card, the > PCI-X vid card from the working machine, and now PCI-X > card I just bought yesterday (nvidia based). None > have affected whether the Marvell chipset works or > not. > > Also, the broken machine is a server so I don't start > X on it. It just sits in console mode all the time. > The CPU (Core2 E4400) used to be in the working > machine, then upgraded it to the Q6600 and put the old > E4400 in the new MB that became the broken machine. > Memory was brand new out of the package. So I've used > the E4400 in a MB that worked fine. > > > > I don't understand why the working one is on PCI bus > > 3 while the other > > is on PCI bus 4. It's just as if the chip embedded a > > PCI bridge. Maybe > > those chips are just cheaper dual-channel > > controllers with one faulty > > controller disabled. It would also explain why the > > PCI ID is different. > > I've attached the "lspci -vvv" output for the two > machines, if it doesn't come through just let me know > how I can get it to you. OK, in this trace, both controllers are on the same bus. The broken one has 'Capabilities: [100] Advanced Error Reporting' the other does not have, and the bridge to this bus has two more capabilities : 'Capabilities: [100] Virtual Channel' and 'Capabilities: [180] Unknown (5)'. I don't know whether it can jutify a different behaviour. Also, maybe this is caused by a minuscule difference in the BIOS setup ? Regards, Willy