Could anyone please test this kernel and the bt on off 'scripts'? I don't have any BT devices here at the moment.

I enabled the BT sleep in the kernel, but it doesn't work correctly at the moment, the wakelocks are still there.

So, as a quick and also dirty hack, please create

bt-on.sh which should contain the follwing line:
and bt-off.sh with follwing line in it:
Don't forget to chmod +x both files.

To use these scripts as user add to /init.hammerhead.rc in the bluetooth lpm section or execute the command after boot with devel-su.

The bt-off command should disable bluetooth and the wakelocks allowing the Nexus to enter suspend state.

bt-on starts bluetooth(and the wakelocks).

So bt-off should be executed after boot or put it in your rc.local or any script which gets executed after boot.

Would be nice if someone could report back if this works.

Suspend time can be checked with 'mcetool --get-suspend-stats' or SystemDataScope.

Kernel can be downloaded here.

Another method that works without flashing a kernel:

If you don't need bluetooth you could also disable bt completely with following command: This also stops the wakelock but bluetooth can not be enabled again until you reboot.