Re: grub 0.90 prevents Standby in Windows

[dman]

On Fri, Oct 26, 2001 at 03:18:27PM -0700, address@hidden wrote:
| 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

I don't see any lines at all that mention APIC, on the laptop or my
desktop system.  Both are running custom 2.4 kernels.

| 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.
 
My config has

CONFIG_X86_GOOD_APIC=y
# CONFIG_X86_UP_IOAPIC is not set

| > | 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

Makes sense ...

| 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.

You're not kidding, whenever I close the cover of the laptop the NIC
is gone.  I have to reinsert it, then bring the interface back up.  I
see messages from cardmgr in xconsole (the syslog) about trying to
bring the card back but failing.  I haven't delved deep enough into
Linux and PCMCIA (and APM) to fully understand it or resolve it.  I
have a workaround after all.

-D