Adrian D Jensen wrote:
>
> You need to enable the "ignore multiple suspend/resume requests" option under
> CONFIG_APM (I don't recall the exact line name). This will cause the kernel to
> ignore any further suspend/resume requests within 3 seconds of the first alowing
> it time to actually shutdown. A number of IBM and Toshiba laptops seem to have
> this problem.
>
> Note 1: The CONFIG_APM_POWER_OFF option only gives the kernel the ability to
> shutoff power such as if the command "shutdown -h now" is given.
>
> Note 2: As I understand it, the standby and suspend options currently only put
> the laptop in a low power mode, stopping the drives and suspending the system to
> RAM.
Suspend is a very low power mode. On my IBM560X for example, it can sit in this
state for a week without significant power loss. Suspend is not to be confused
with "standby" which shuts down the disk and screen (if you are lucky) until
some process (like a cron job) comes along and wakes it up. Standby takes
lots of power. Overnight probably would wear the battery down.
Suspend to disk is called "Hibernation." It is slow and useless unless you
are swapping a battery or leaving for more than a week, and want a really
long term storage. You might as well shut the machine off as use Hibernation,
in my experience.
I'm passing this along because I was confused by it when I first encountered
these terms. And because many times these functions dont work even under windows,
adding to the confusion.
> The APM cannot currently issue a "suspend to file" command like under
> Winblows (I think there was a hokey experimental patch but I haven't tried it).
> However, it does accept "suspend to disk" commands from the BIOS (this is
> suspend to a physical disk partition not a file on a Winblows/Linux drive). On
> my laptop, a Quantex I-14xx same as Dell Inspiron 7k, I have a "suspend to disk"
> function key that issues this and lets APM suspend to the disk and power off.
> Upon reboot, the BIOS restores the RAM image from the disk partition and
> releases to APM to start the system were I left off.
>
> Hope this helps.
> Adrian
Jont
--
Jont B. Allen
AT&T Labs-Research, Shannon Laboratory, E161
180 Park Ave., Florham Park NJ, 07932-0971
973/360-8545voice, x7111fax, http://www.research.att.com/~jba
-"Dont anthropomorphize computers, they hate it." --unknown
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