When moving the cursor (with the mouse or the touchpad) in a X session, powertop reports frequent wakeups from PS/2 keyboard/mouse/touchpad. For example: Top causes for wakeups: 60.1% (490.0) <interrupt> : PS/2 keyboard/mouse/touchpad When stopping moving the cursor, these wakeups disappear. This behaviour is present with older kernels too. Other reports concerning this issue: - https://bugs.freedesktop.org/show_bug.cgi?id=19736 - https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/194489 Is powertop reports false? Or is moving the cursor really waking up the computer so often?
This is a hardware constraint. Fortunately it occurs when waving the mouse around not when idle.
I think the resolution status of this bug could be changed to FIXED: I am running the distro kernel 3.16.0-4 from and on Debian jessie here. When not moving the mouse there is no noteworthy number of wakeups reported by powertop. When moving the mouse around it raises to ~190/s, which is much less then the originally reported ~450/s. This bug report is referenced from other places (notably launchpad). Changing the status here would toggle the state in launchpad (and here) to actually indicate that this is not a problem any more. Alain could please change the resolution status?
It's closed correctly. If that confuses Launchpad then please file a bug with Ubuntu to fix launchpad. The numbers you get will depend on the systen,