I have the latest BIOS update for my laptop which is buggy I suppose. There has been only one update this year if my memory serves me correctly. Is there any hope to fix this or am I at the mercy of the hardware vendor which apparenlty doesn't look like they will release another patch this year. Please forgive me as I am not a kernel developer but a concerned user. I've sacrificed ACPI in favor of SMP at this point, I don't know what it's buying me but the kernel boots and works fine with the draw back that I have no ACPI and I have to manually power the computer down by pressing the power button when it halts. I can live with that if that is the solution but I haven't really tracked as far as the high level dev stuff goes in this thread and don't know what the solution might be. On 8/8/07, Joachim Deguara <joachim.deguara@xxxxxxx> wrote: > On Wednesday 08 August 2007 02:06:31 Andi Kleen wrote: > > On Tue, Aug 07, 2007 at 06:15:37PM -0400, Cal Peake wrote: > > > On Fri, 3 Aug 2007, Linus Torvalds wrote: > > > > > MSR_K8_ENABLE_C1E lo == 0x04c14015 > > > > > MSR_K8_ENABLE_C1E hi == 0x00000000 > > > > > lo & ENABLE_C1E_MASK == 0 > > > > > > > > And yeah, that claims that C1E is not on, but: > > > > > amd_apic_timer_broken: forcing return value of 1 > > > > > > So it seems my initial debugging report was, err, incomplete. I failed to > > > notice that the amd_apic_timer_broken function was getting called twice, > > > once for each core. > > > > > > The second call shows this: > > > > > > MSR_K8_ENABLE_C1E == 0x14c14015 > > > > Ah interesting. Ok finally that all starts making sense. > > > > Not sure why the MSR varies between cores though. > > This is a BIOS bug as the BIOS should have programmed the MSR the same for > both cores. See section 10.2.4 of the Rev F BKDG [1] (10.2.4.1 talks about > the SMI case but a newer version of the doc not yet release has similar > wording about both cores needing to have the bit set for the chipset case). > > -Joachim > > [1] > http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/32559.pdf > > > - 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
