Messages in this thread | | | Date | Thu, 02 Nov 2006 09:40:18 -0500 | From | Stephen Clark <> | Subject | Re: fc6 kernel 2.6.18-1.2798 breaks acpi on HP laptop n5430 |
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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.
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