Date: Mon, 5 Jun 2006 10:12:28 -0700 From: "Jack Vogel" <jfvogel@gmail.com> To: "Pete French" <petefrench@ticketswitch.com> Cc: freebsd-stable@freebsd.org Subject: Re: Dual Opteron system will not run SMP Message-ID: <2a41acea0606051012r5831971qb3d2fb88e701225@mail.gmail.com> In-Reply-To: <E1FnI6R-0003aM-3o@dilbert.firstcallgroup.co.uk> References: <2a41acea0606050919p17efd6cfva55113b19d105815@mail.gmail.com> <E1FnI6R-0003aM-3o@dilbert.firstcallgroup.co.uk>
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On 6/5/06, Pete French <petefrench@ticketswitch.com> wrote: > > You say you can boot 'safe', can you boot with just ACPI disabled? > > Not using an SMP kernel, no. I did another experiment though, I > installed amd64 onto an IDe drive, and that will boot SMP with > APCI disabled, but still only recognises a single processor. > > > One suggestion, boot in SAFE or non-ACPI, then do a pciconf -l and > > look for pci devices that are unknown. At least that will give more > > evidence. > > O.K, will give that a shot later this evening. > > > Hard to say if its ACPI or PCI related. Uh, you did make sure you > > have the latest BIOS for your motherboard right? > > Yup - first thing I did. I also asked if other people are using this, and > Soren apparently uses it (for amd64), so it preseumably does work! We (Intel networking group) have seen issues with SMP and amd64 as well, although I dont know that its fully characterized (what works and what doesnt) yet. If just non-ACPI isnt sufficient, the other thing SAFE does is turn off disk DMA. I have an as-yet unreleased system that has this same type of issue, and the problem is that two PCI device ID's are not recognized, so maybe that will be your problem. Jackhome | help
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