Laptop Crashes When the Lid is Shut

**alphazion** · 09-26-2003

I just installed Red Hat 8.0 on my friends laptop, everything runs fine until you shut the lid, upon which the computer completely freezes. Is there a setting that needs to be changed?

**Hellmasker** · 09-26-2003

rh8 seems to have a lot of bugs. I woudl check that apm is enabled in the kernel, and that apmd is active (or whatever power managemnt daemon u use)

as u prob know the lid closing is suppoed to cut power to the monitor and possibly downclock the cpu etc, so u need power management stuff setup or it will crash.

**alphazion** · 09-26-2003

To be honest, I am quite a novice at Linux. How do you go about enabling apm or apmd in the kernel, or enabling any sort of power management? Thank you for your help.

**scientica** · 09-26-2003

I'm no expert in laptops, but don't many laptops shutdown when the lid is shut? (Or do they just suspent/enter some low power mode)

**alphazion** · 09-26-2003

Exactly, but for some reason the mechanism that puts the computer to sleep is causing linux to crash.

**Hellmasker** · 09-27-2003

firstly, as root type
service apmd status
if it says running try looking for config files to check why its not working.
if it says stop run
service apmd start
and if it says not foudn chcek ur distro cd's for anyhting labelled apm and install it.

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Laptop Crashes When the Lid is Shut

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