Messages in this thread | | | Subject | Re: fc6 kernel 2.6.18-1.2798 breaks acpi on HP laptop n5430 | From | Sergio Monteiro Basto <> | Date | Thu, 02 Nov 2006 14:47:40 +0000 |
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On Thu, 2006-11-02 at 09:40 -0500, Stephen Clark wrote: > Sergio Monteiro Basto wrote: > > >On Wed, 2006-11-01 at 22:03 -0500, Dave Jones wrote: > > > > > >>On Wed, Nov 01, 2006 at 08:08:31PM -0500, Stephen Clark wrote: > >> > >> > booting without lapic allowed it to boot but now I get > >> > ... > >> > Local APIC disabled by BIOS -- you can enable it with "lapic" > >> > ... > >> > Local APIC not detected. Using dummy APIC emulation. > >> > which means more processor overhead - right? > >> > > >> > also cpuspeed doesn't work anymore - I don't have a cpufreq dir > >> > >>The Duron had powernow ? > >> > >> > > > >This story of trying enable lapic when BIOS don't, has been triggered on > >kernel2.6.18, but in my opinion is not a bug if lapic on those computers > >don't work. > > > >If you boot without enable lapic, you will see cat /proc/interrupts with > >interrupts in XT-PIC. > >if you try enable lapic, somehow IRQ routing should change > >and if /proc/interrupts still the same, with IRQs in XT-PIC. > >I think, lapic still not enabled and the most you can get it's problems. > >Unless you know that lapic works (it is programmed and BIOS wrongly > >disable it), you shouldn't try enable lapic because it is probable that > >just give problems, to you. > >Historically: In 2002/3 was a very common bug, when kernel was compiled > >to support lapic and try enable lapic (even when BIOS don't) and > >computer hangs on boot. > > > > > Loading the correct kernel arch 686 - fixes my powernow problems - this > is a mobile duron. > > Booting with lapic worked fine on fc5 kernel-2.6.18-2200 but it causes > fc6 kernel-2.6.18-2798 > to hang.
With lapic boot option enabled, have you a different /proc/interrupts ? have you lapic working ?
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