July 12, 2007

Linux Power Management

Filed under: Uncategorized — mhoye @ 11:38 am

Back in the early nineties, I once put a Powerbook Duo to sleep for weeks. When I turned it back on, there it was, just the way I left it, windows and all, in just seconds.

Now, running Linux on modern hardware I can sometimes get that to work, and sometimes not, and it won’t work at all if I have a USB key or an SD card plugged in, and it might depend on a race condition between two competing power management programs, of the three or four available, and some of the time it will wake back up just fine, and other times not so much…

This stuff should really just work, but getting it to that state is some serious nerd voodoo, if it’s possible at all.

I haven’t figured out how to kill people with my brain yet, so those of you who’d like to suggest that I buy a Mac can for the time being do so with impunity.


  1. APM worked. ACPI is a mess. The only chipsets that implement the standard fully compliant and complete are intel, and even then, good luck. Windows can’t manage this with any reliability either, thus, Microsoft gave up and implemented Hibernate (sleep and suspend are still there, but don’t count on them working).

    Comment by Jamie Bowden — July 12, 2007 @ 12:32 pm

  2. It’s a constant surprise to me that this is still a problem, considering that what people actually want to have happen is so incredibly well defined. “I would like to open the lid on my laptop and start working where I left off.”

    Comment by Mike Hoye — July 12, 2007 @ 1:08 pm

  3. Umm… OK then… Buy a Mac?

    Comment by Amos — July 12, 2007 @ 9:45 pm

  4. you see, i told you!

    Comment by Larissa — July 13, 2007 @ 3:32 pm

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