[Gta04-owner] ANN: first replicant 4 with 3.12 kernel available

Dr. H. Nikolaus Schaller hns at goldelico.com
Sat Dec 21 13:49:20 CET 2013

Am 21.12.2013 um 13:19 schrieb Alexander Rumyantsev:
Hi Alexander,

> Hello
> Unfortunately working with replicant and 3.12 kernel I find next big
> difference,
> which I have not meet when I have work with 3.0, 3.4 and 3.7
> Problematic is wakelock facility. 

What is problematic with it? Any specific issues? What appears to be different?

> I find only this discussion in google:
> https://groups.google.com/forum/#!topic/android-kernel/0xAc7uK9wgw
> but not any official documents. May be somebody can point me?

Yes, they write:

> John Stultz	
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22. Apr
> It is upstream in the mainline kernel as of 3.5 (and backported to the 
> AOSP 3.4 tree). The userland interface is the same, as Android, but 
> internally in the kernel the same functionality is provided by the 
> wakeup_source & autosleep code. 

> See include/linux/pm_wakeup.h, kernel/power/autosleep.c, 
> kernel/power/wakelock.c. 

> Or may be somebody know solutions?

So it should also be in 3.12 (unless it has been removed by someone).

3.12 is in my experience much closer to Android as 3.0 or 3.4 (although I
did not follow the details). This was the main reason to forget working
on older kernels and repeating work already done by others.

Anyways it may be a buggy implementation in 3.12 or some driver. Or
we have not configured it correctly (since we did start with a non-Android


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