On Thu, 2007-01-11 at 13:41 +0000, James Wilkinson wrote: > Rick Stevens wrote: > > All you need to do is append "lapic" to the kernel line in grub: > > > > kernel /boot/vmlinuz-2.6.18-1.2869.fc6 ro root=LABEL=/ rhgb > > quiet lapic > > > > (all on one line). That may not solve your issue. You may need to use > > "noapic" instead: > > > > kernel /boot/vmlinuz-2.6.18-1.2869.fc6 ro root=LABEL=/ rhgb > > quiet noapic > > > > (again, all on one line) to turn off your APIC. It really rather > > depends on just how compliant your BIOS is with the APM or ACPI > > specifications. It always stuns me just how badly some of these > > standards are implemented. Do they even read the specs? This ain't > > rocket science (and yes, I was a rocket scientist at JPL). Sheesh! > > If the computers are single-core, single-processor systems with no > hyperthreading enabled, then it might also be worth trying to use APM > rather than ACPI. That's done with the acpi=off kernel line parameter. > (Linux uses ACPI unless it's not supported or turned off. If and only if > ACPI is not enabled, then it tries enabling APM, unless *that's* turned > off or not supported -- and APM can't work in SMP mode. You need one or > the other to do a software power off). > > If that works, then you've got a problem with the ACPI on your > motherboards. Look for BIOS updates. > > Hope this helps, > > James. But please explain why (in my case) only FC6 has this problem? I have upgraded the BIOS but it is FC6 that leads to this problem so in my mind it must be a problem with FC6 not the BIOS or the motherboard. -- Aaron Konstam <akonstam@xxxxxxxxxxxxx>
