Re: weired behavior

["km b" <kmb810@xxxxxxxxx>]

On 6/3/07, Matthew Dillon <dillon@apollo.backplane.com> wrote:
>     The video BIOS is messing with the 8254.  It may be worth a shot
>     to try to use timer 1 instead of timer 2.
>
>     Try putting this in /boot/loader.conf:
>
>     hw.i8254.walltimer=1

this fixes the problem without any hardlocks.

>     I am assuming you are booting without ACPI?  Usually the ACPI timer
>     is used if you boot with ACPI and this problem doesn't occur.  If ACPI
>     doesn't work for you it may still be possible to boot with ACPI just
>     to get at the timer, but with most of the features disabled.  'man acpi'
>     tells you how to disable certain features.

i am always booting with ACPI enabled. but still it uses the i8254 timer.
my guess was in SMP environment LAPIC timers are used.

Cheers
kmb

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