The BIOS disables the LAPIC for a reason. A couple of years ago Linux made the mistake of enabling the LAPIC that the BIOS disabled, and all hell broke loose. We fixed that bug about a year ago, but left "lapic" to force it on for those where forcing it to be enabled actually works (eg. some folks want the NMI profiling on their IOAPIC-less laptop) But if you force the lapic to be enabled, you are running the system in a mode not supported by the manufacturer and you are on your own. I don't see an indication that this is a bug. If it used to work and it is important to you, then run the old software where it used to work -- because chances are good that it worked by accident. -Len On Tuesday 31 October 2006 22:01, Adrian Bunk wrote: > FYI: > > Subject : Thinkpad R50p: boot fail with (lapic && on_battery) > References : http://lkml.org/lkml/2006/10/31/333 > Submitter : Ernst Herzberg <earny@xxxxxxxx> > Status : submitter was asked to bisect > > It seems to be completely unrelated (except that it's also a ThinkPad), > but it might be worth a try whether a (non-SMP) kernel without APIC > support fixes the issues after resume. > > Hugh, your laptop seems to be a non-SMP laptop. > Do you have APIC enabled, and if yes does disabling help? > > cu > Adrian > > > VERSION = 2 > PATCHLEVEL = 6 > SUBLEVEL = 19 > EXTRAVERSION = -rc4 > NAME=ThinkPad Killer > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
