Suspend and the blinking power led

Andy Green andy at warmcat.com
Tue Oct 10 18:34:22 UTC 2006


Louis Garcia wrote:

>> So, how did you suspend the machine in each case ?

> Sorry, I should of said suspend to disk. When Windows suspends to disk
> their are no flashing leds. When fedora suspends to disk the power led
> flashes. Their has to be something in the scripts that does this.

I think Chris hit the nail on the head, instead of hibernate (the term 
that seems to be in use to replace 'suspend to disk') it seems you 
suspended to RAM under Linux.  You can test this by removing your 
battery for a few seconds, on booting I imagine it will cold boot in 
this case, not come back from what was a suspend to a now trashed RAM. 
If you are right and it is hibernated, then it will come back from 
hibernate normally even though you removed the battery for a while.  The 
mixup would perfectly well explain why the power light flashes in Linux 
only, it normally does in suspend to RAM to remind you that you can't 
leave it in that state too long.

-Andy




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