[LBo] Re: PCM Slot Remains Powered After Laptop Shutdown

[vwall]

Anerobe wrote:
> Anita Lewis wrote:
> 
>> On 10/29/2006 01:37 PM Anerobe wrote:
>>> When I shutdown my laptop (KDE GUI), after my laptop powers down, the
>>> PCMCIA slot remains powered (w/external power block connected).
> 
>> 1. What distro of Linux are you using?
> PCLinuxOS
> 
>> 2. What is the card for?
> Linksys wireless connection
> 
>> 3. When you shutdown in KDE, do you click on some button?  I don't have
>> KDE on mine; so I'm not sure how that works.
>>From a menu system, I click "Log out..."; then "Turn Off Computer"
> 
>> 4. How do you observe that the card is still on?  Does it have a light
>> or something?  Does it stay on or does it eventually turn off?
> 
> Yes, the power light remains on. It does not turn off. If I unplug the PCM
> card, and then reinsert it, the power light comes back on (socket is
> energized). However if I unplug the 110 vac power block, the light goes
> out, and remains out, even if I plug the power block back in...

This sounds like a provision for "wake on LAN".  This uses the +5V 
standby power, which is present whenever the power supply unit is 
plugged in, to allow the computer to be booted by a special LAN signal 
received by the card.

There is usually a setting in the BIOS to enable this. I don't know why 
it would be different in XP, perhaps a system setting.  With a laptop, 
it may be disabled when not plugged in to conserve battery power.

Check your laptop's manual for a "wake on LAN" BIOS setting.

-- 
Virg  Wall