On Wednesday, 26 September 2007 10:31, Ingo Molnar wrote: > > * Rafael J. Wysocki <[EMAIL PROTECTED]> wrote: > > > On Tuesday, 25 September 2007 22:55, Thomas Gleixner wrote: > > > On Tue, 2007-09-25 at 22:55 +0200, Rafael J. Wysocki wrote: > > > > I have reworked the patch a bit so that it applies on top of > > > > 2.6.23-rc8-mm1 > > > > and compiles (my version is attached). > > > > > > > > With this patch applied, the kernel boots correctly on the nx6325. > > > > > > I know. It's basically enforced "noapictimer". > > > > > > But this still does not explain why your nasty box booted current > > > mainline with "apicmaintimer" on the kernel command line. > > > > Now it doesn't do that any more. > > > > As I wrote in the other thread, I think that _sometimes_ the CPU > > doesn't enter the C1E state (or how it's called) and then the box > > boots and works. > > Can you see any correlation between being on AC or on battery and this > bug occuring?
No. All tests were done with the AC power supply plugged in. > Sometimes the BIOS might even do C states depending on > whether the box was booted up on AC or on battery. (and sometimes the > kernel calibrates things differently when booting up on battery [lower > speed] - so this can have an effect too.) On my box there are hidden history effects related to other things too (eg. sometimes after a fresh boot the processor generates lots of ACPI events such that it takes 25% of CPU power to handle them alone). Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
