Re: grub 0.90 prevents Standby in Windows

[erich]

dman <address@hidden> wrote:

...
> | 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.
> 
> This is a uniprocessor machine, and I no nothing about *APIC stuff.
> I'll have to read up on it sometime.

A lot of uniprocessor machines support APIC and IO-APIC operation now,
hence the UP (UniProcessor) configuration parameters in the Linux
kernel.

A simpler thing entirely is to run "dmesg" and grep the output for
"APIC".  If you see anything other than:

   No local APIC present or hardware disabled


Then take a look at your kernel configuration.

If you run "make menuconfig", look under the "Processor Type and Features"
top-level menu, and look for the items:

      [*] APIC support on uniprocessors
      [*] IO-APIC support on uniprocessors

As you see, they are enabled on my kernel.  Disable them if you can.


> | 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.
> 
> Closing the cover on the laptop causes the BIOS to put the machine in
> suspend mode.  The BIOS only allows "Suspend-to-RAM" or
...
> on, but oh well)  I don't do anything special with linux itself as far
> as APM goes other than to turn off the machine when I run
> '/sbin/halt'.

Well, the point is that the kernel needs to cooperate with it to some
extent.  APM generally takes care of the processor and memory, but there
are other devices like the disk, video controller, and particularly things
like PCMCIA cards and possibly mini-PCI cards that the BIOS handlers
might leave in a completely hosed state.


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