Re: grub 0.90 prevents Standby in Windows

[erich]

dman <address@hidden> wrote:

> On Thu, Oct 25, 2001 at 05:03:59PM -0700, address@hidden wrote:
> ...
>  
> | I think it's the presence of APM checking code in GRUB itself 
> ...
> | The current version of GRUB appears to use an APM checking/initialization
> | routing similar to that of the Linux kernel's setup code.
> | 
> | I know for a fact that the Linux kernel's APM setup code is busted in
> | the sense that it leaves the APM in a "connected" state, and the
> ...
> ...
> | it will cause random crashes for no apparent reason.
> ...
> 
> These quoted lines here struck me as particularly interesting.  I use
> a Dell Inspiron laptop with grub (not sure on version, probably 0.90)
> and linux (2.4.8).  Sometimes when I close the cover (suspend-to-ram)
> then open it later I get lots of "hda: lost interrupt" messages and
> all I can do is hard-reset the machine.  Could this be caused by the
> above mentioned interactions?  I have the APM stuff in the kernel and
> I like it because the machine shuts off automatically when I tell it
> too.  If this is indeed (or might be) the problem, how can I correct
> it?  Do I simply need to remove the apm sutff from my kernel?

Hmm.  There are machines with broken APM, but in general the Linux
kernel is supposed to deal with that decently.

You may want to try the patch I just posted and see if it solves
your problem (i.e. maybe it was confusing Linux's APM code a bit...
who knows?  though I tend to think not if it worked at all).

The problems I mentioned above were with:  APIC/IO-APIC use along
with APM, and with SMP/APIC/IO-APIC and APM, on only some machines
(for example, disabling the APIC for main interrupt delivery on those
SMP machines fixed the problem).

So, if the patch I sent doesn't resolve your problem (and like I said,
I tend to think it won't), then see if you're using the UP-APIC and
UP-IO-APIC configuration in your kernel, and disable them, then try
that.


If you disable APM, I think bad things might happen if you use suspend/
resume.  I've never tried it, but there's a reason they have APM support
in the kernel.


--
    Erich Stefan Boleyn     <address@hidden>     http://www.uruk.org/
"Reality is truly stranger than fiction; Probably why fiction is so popular"