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How do I prevent immediate wake up from suspend and/or hibernation?

rated 0 times [ 40] [ 0] / answers: 1 / hits: 40723 / 2 Years ago, fri, august 12, 2022, 2:20:21

For a few days, my Ubuntu 12.04 desktop computer has mysteriously been waking up immediately after going to suspend mode.

Since installation, my Ubuntu 12.10 laptop computer has also been resuming immediately after suspend and hibernation.

How to prevent those?

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erettor

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2 Years ago

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answered 2 Years ago tocklftime · Accepted Answer

This problem was probably caused by strange USB signals. gedit /proc/acpi/wakeup showed me, that wakeup was enabled for USB0 and USB2.

sudo -s

echo USB0 > /proc/acpi/wakeup

echo USB2 > /proc/acpi/wakeup

switched them to disabled (checked by gedit /proc/acpi/wakeup again or refreshing the file-view), and after that, the computer stays in suspend like it should. :-)