Date: Fri, 16 May 2003 09:54:11 -0500 From: "Guy Helmer" <ghelmer@palisadesys.com> To: <net@freebsd.org>, <smp@freebsd.org> Subject: Resolved, was RE: Intel Pro/1000 82540 Ethernet, was RE: SuperMicro X5DEI-GG Message-ID: <FPEBKMIFGFHCGLLKBLMMKEBACCAA.ghelmer@palisadesys.com> In-Reply-To: <FPEBKMIFGFHCGLLKBLMMIEAPCCAA.ghelmer@palisadesys.com>
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(Apology for the crosspost - I queried both smp and net) On May 15, 2003 5:00 PM I wrote: > Originally I wrote to smp@freebsd.org: > > Has anyone had positive or negative experience with the > > SuperMicro X5DEI-GG > > dual-Xeon motherboard? It seems to work OK on a uniprocessor kernel, but > > FreeBSD 4.8 SMP kernels lock up after the "mounting root" message or after > > ifconfiging lo0 in the startup scripts. Our first machine may just be > > flaky, so I'll try another one as soon as possible... > > I seem to have isolated the problems with SMP on this machine to the > built-in Intel Pro/1000 (82540) Ethernet interfaces. The machine *nearly* > freezes after ifconfig is run during startup. It can respond to > the keyboard > (accepting characters) the first few times I unplug/plug the > Ethernet cable > from em0 and cause link down/up messages on the console. This > only works a few > times before the keyboard becomes completely unresponsive. I've > tried a 4.8-RELEASE > and a 4.9-STABLE kernel cvsuped today. Any suggestions would be > appreciated. It turned to be a timer problem. The SMP kernel didn't seem to be receiving timer interrupts. I removed the apm device from my kernel config, and now the kernel reports: APIC_IO: Testing 8254 interrupt delivery APIC_IO: Broken MP table detected: 8254 is not connected to IOAPIC #0 intpin 2 APIC_IO: routing 8254 via 8259 and IOAPIC #0 intpin 0 and now it works fine. Thanks to pdeuskar for a suggestion regarding if_em that allowed me to boot the machine to the point where I could diagnose the real problem. Guy
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