On Wed, Apr 18, 2012 at 12:24:17AM -0400, Chad C wrote: > Updated the mainboard UEFI to latest version but am still getting the > same kernel page fault. > > I compiled "options DDB" and "options GDB" into the generic kernel. > After rebooting and entering DDB I get the following from various commands: > > On bootup I am now getting the following: > > real memory = 8589934592 (8192 MB) > avail memory = 8198332416 (7818 MB) > Event timer "LAPIC" quality 600 > ACPI APIC Table: <ALASKA A M I> > panic: AP #2 (PHY# 4) failed! > cpuid = 0 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > kdb_backtrace() at KDB_backtrace+0x37 > panic() at panic+0x187 > cpu_mp_start() at cpu_mp_start+0x589 > mp_start() at mp_start+0x85 > mi_startup() at mi_startup+0x77 > btext() at btext+0x2c > KDB: enter: panic > [ thread pid 0 tid 0 ] > Stopped at kdb_enter+0x3b: movq $0,0x905dc2(%rip) > db>
So your other core failed to start. You might try a lack posting exact model/bios version of the machine and mainboard. But indeed, this is most often BIOS bugs. Sometimes in the strange areas like USB, e.g. SMI handler for emulating legacy PS/2 keyboard. As a shot in the dark, try to fiddle with this setting.
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