2.4.12, Dell i8100 hangs when unpluggin power

2.4.12, Dell i8100 hangs when unpluggin power

[Take Vos]

Hello everyone,

I've been running 2.4.10 and 2.4.12 on my new Dell inspiron 8100, both of 
which seems to hang as soon as I unplug the power coord, or close the lid.

This problem is even without running X11 at all. Or when removing Power 
Managment from the kernel and/or disabeling it in the bios.

I found a previous message on the kernel mailing list which seems to be
the same bug, I will include it here (I personaly haven't tried 2.4.5 yet):

Georg Nikodym wrote:
> I've been running 2.4.5 on my new Dell I8000 without too many
> problems.  Last night I built -ac13 (on my porch) and booted it
> without incident.  Later, going inside and re-connecting the AC I
> notice that the thing's hung.  I play around a bit and discover that
> the act of plugging or unplugging the power cord will hang the box.
>
> This lead me to disable all power manglement in the BIOS.  No joy.
>
> This problem does not exist using straight 2.4.5.
>
> Has anybody else seen this?  Any debugging suggestions?  Or stated
> differently, has anybody with this machine arrived at a configuration
> that avoids weirdness in the power management framework?

Re: 2.4.12, Dell i8100 hangs when unpluggin power

[Mikael Pettersson]

On Sun, 14 Oct 2001 19:29:41 +0200, Take Vos wrote:
>I've been running 2.4.10 and 2.4.12 on my new Dell inspiron 8100, both of 
>which seems to hang as soon as I unplug the power coord, or close the lid.

If you have any of CONFIG_SMP, CONFIG_X86_UP_APIC, or CONFIG_X86_UP_IOAPIC
enabled, then it's a known problem: broken Dell BIOS. Just make sure
all three of these config options are off/disabled.

I'm (slowly) working on a solution. It involves moving dmi_scan to a
much earlier point in the init sequence (to setup_arch), but there
are some issues regarding its use of ioremap/iounmap to resolve first.

/Mikael