There was a discussion recently about Linux notebooks and getting them to
suspend/resume reliably. Some additional notes:

Default RedHat kernels do not have APM-support configured in. (Naturally
that does not apply to Raju, who wouldn't know what a pre-compiled kernel
is if it came along and dumped a piano on his foot... ;-)

Assuming that you have compiled yourself a kernel that *is* APM-savvy,
your notebook should suspend and resume just fine.

Except if you have a 32-bit CardBus card in the PCMCIA slot.

In this situation, it suspends just fine, but if you try to resume, you
get what is popularly known as "uuuaaaarrrggghhhh!!!!!!!"

The way around this is simple - eject the card *before* you suspend, and
kill the pcmcia drivers (/etc/rc.d/init.d/pmcmcia stop) before you
suspend.

One example of this (though it happens to *all* CardBus cards) is the
Xircom RealPort RBEM56G-100 that I use. Notice the "B" in the model number
- it is the only thing that differentiates it visibly from the 16-bit
version of the card that does not have this problem.

In real life, this is less of a problem than one would expect - PCMCIA
cards are major power suckers and unless you are actually connecting to a
LAN or to a phone line, there is little point having a card in the PCMCIA
slot sucking power for no reason. And if you actually needed to connect to
a LAN, one could safely assume that you aren't going to find yourself in a
need-to-suspend situation. A suspend is really a
"on-the-airport-and-your-flight-got-called" kind of situation.

So the wise word is - suspend/resume on a Linux notebook works, provided
you don't have a CardBus card in your PCMCIA slot at that time.

Dave Hinds. the Linux-PCMCIA guy
(http://hyper.stanford.edu/HyperNews/get/pcmcia/home.html) is currently
working on the issue.

'nuff said.

Atul


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Atul Chitnis     | [EMAIL PROTECTED] (PGP:6011BCB8)
C&B Consulting   | http://www.cbconsulting.com
Bangalore, India | +91(80)3440397 Fax +91(80)3341137
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