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[Bug 235539] Re: Laptop boots at Midnight, by itself.

 

Hello there,

I got exactly the same problem when upgrading from Gutsy to Hardy, or
probably rather after running the update manager afterwards. I've played
around in BIOS to find a solution but without luck and went on to test
boot parameters more or less randomly. After testing a parameter
sequence I found on an Ubuntu forum for solving a somewhat different
problem, the situation now seems OK. No more spontaneous booting at
midnight. The trick was to boot the kernel with acpi=off and
apm=power_off. Additionally, the line

apm power_off=1

must be added to /etc/modules. I don't understand why I need to make
these changes. My BIOS is supposed to support both APM and ACPI, even
though the computer admittedly is getting old, and why didn't I have any
problems with Feisty or Gutsy. Beats me, but you could try it out and
see if it helps even in your case.

-- 
Laptop boots at Midnight, by itself.
https://bugs.launchpad.net/bugs/235539
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