Local APIC option (CONFIG_X86_UP_APIC) locks up Inspiron 8100

Stevie O (stevie@qrpff.net)
Wed, 31 Oct 2001 00:06:57 -0500

I just bought a Dell Inspiron 8100. <long story of what happened snipped>.
So after a few dozen kernel builds I've narrowed it down to this: When I
build the 2.4.13 kernel with Local APIC support (CONFIG_X86_UP_APIC=y), two
things happen (so far that i've noticed):

1) The power button stops working, as if the kernel was intercepting the
signal and ignoring it. I have to hold it for five seconds to turn off the
machine.

2) Anytime I change the plugged-in status of the AC adapter (if it wasn't
plugged in, if I plug it in; if it was plugged in, if I unplug it), the
machine locks up completely.

As the help on this option has no warnings about it being dangerous to use,
I would really like to help find out what part of it is locking up. The
only problem, is... I have no idea where to start.

One other thing: how would the kernel react to the "SpeedStep" feature of
changing the CPU speed while things are still running?

--
Stevie-O


Real programmers use COPY CON PROGRAM.EXE


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