[Bug 110784] Re: Toshiba laptop battery is drained while shut down

[Stefan Bader]

I am closing this bug now for several reasons. First, there does not seem to be much activity anymore. The behavior seems acceptable with newer kernels. But for Hardy it would be just too intrusive and risky to try to backport the newer code in general. The patch Renato pointed out already is more than could be done for a stable update. Although the problem i very annoying, it is not critical enough to take the risk. This is sadly the truth. If someone can pinpoint a single change by bisecting, maybe. Still that would depend on the change and what effects might get introduced by reverting that.
So those who have to or want to stay with Hardy, a few generic thoughts. Try to find out whether unloading certain modules helps to reduce the drain. Guess this is simpler to test using hibernation as the pm-tools have support for that. If a certain set of modules is found, this could be used to write a init script to be run on shutdown.
Check whether "cat /proc/acpi/wakeup" has entries for S5 (though I do not think there are). Should there be one enabled it can be turned of by calling "echo '<device> disabled' >/proc/acpi/wakeup" as root.
There might also be the RTC being kept active (in theory to cause the system to be woken at a certain date/time). I have not been able to test this but heard that you could get it properly disabled by setting the alarm to go off manually.
Final note: even as I close this now, I someone still got that issue with Jaunty (or whatever the current release is) please reopen the bug saying so.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Won't Fix

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Toshiba laptop battery is drained while shut down
https://bugs.launchpad.net/bugs/110784
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