On Fri, 2008-05-02 at 14:11 +0100, Richard wrote: > Andrew Morton wrote: > > On Fri, 02 May 2008 12:23:01 +0100 Richard <tuxbox.guru@xxxxxxxxx> wrote: > > > > > >> Len Brown wrote: > >> > >>> On Thursday 01 May 2008, Richard wrote: > >>> > >>> > >>>> Len Brown wrote: > >>>> > >>>> > >>>>> On Tuesday 29 April 2008, Richard wrote: > >>>>> > >>>>> > >>>>> > >>>>>> Hi there, > >>>>>> > >>>>>> Now I am at a loss.. I cant get any logs from netconsole. With ACPI > >>>>>> enabled it drops dead just after the kernel hands control to Init. When > >>>>>> I reboot with acpi disabled there is no trace of the previous boot in > >>>>>> /var/log/message or kernel logs. > >>>>>> > >>>>>> The network card I have is a Tigon3 and its not initialised before the > >>>>>> system dies... or so it looks (altho I cant seem to get any netconsole > >>>>>> working - I suspect pebkac) > >>>>>> > >>>>>> I have tried to find an option where the kernel boot is logged > >>>>>> explicitly to disk, but I cant seem to find the option. There is so much > >>>>>> chaff I cant seem to get my brain to find the REAL options list thats up > >>>>>> to date. > >>>>>> > >>>>>> Any pointers are appreciated > >>>>>> > >>>>>> > >>>>>> > >>>>> go fishing with this bait: > >>>>> > >>>>> idle=poll > >>>>> acpi=noirq > >>>>> > >>>>> -Len > >>>>> > >>>>> > >>>>> > >>>>> > >>>> Thanks :-) With help from Thomas (and his team) , noapictimer seems to > >>>> have fixed the symptom.. now its to hunt for the cure :-) > >>>> > >>>> > >>> if the problem is the apic timer stopping during C-states, > >>> then you should find that idle=poll will also work around the problem. > >>> If idle=poll does not work around it but noapictimer does, then > >>> the problem is the apic timer when the system is non-idle. > >>> > >>> -Len > >>> > >>> > >>> > >> Hi Len, > >> > >> thanks - the idle=poll works to fix the problem. > >> > > > > Well, that's hardly a "fix". The power consumption will be very high. > > > > > Hehehe, its a start. A booting kernel is definitely a good start (even > one what drinks battery). I have some avenues in the source to > investigate, but being a ACPI n00bie its trying to get my head around > the mass of code thats a daunting task. Richard, could you try processor.max_cstate=2 (or even 1), pls (without noapictimer). Or you can double check whether you have cstates at all first(when booting with noapictimer): cat /proc/acpi/processor/*/power Vendors often invalidate deeper sleep states with an invalid latency. Maybe this has been forgotten here, Windows does not use deeper C-state or it works there for some reason. If this works for you, please send dmidecode output. IMO we should then blacklist this machine in drivers/acpi/processor_idle.c to not use the offending sleep state. There already is a blacklist. Thanks, Thomas -- 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
