[feature] add doc about l2_hsic

[asksven]

I found out smth else this morning, maybe some others have already found out too. Nevertheless I will share with you first, before confirming my result

1. Go to settings
2. go to Wi-fi
3. press your menu button (lower left capacitive button)
4. press advanced (thats the only choice that pops up)
5. under "Keep Wi-Fi on during sleep" -> choose never
6. Restart your phone.

as before, it was kept as "always" and I am thinking it caused the l2_hsic issue that prevents my phone from sleeping.

As of now, after 30 mins, l2_hsic is only 2m awake. The change might be due to the reboot, I am not sure. I will report back in 2 days.

Previously, I reseted back to factory setting, it didnt appear before the first charge, so I shld see what happens after the first charge

I've also tried using juice defender to narrow down the app (disabling app for connectivity when slp), but it seems to me its not an app, but rather the settings, or the modem or router or possibly hardware issue

It shldnt be an app because i monitor my data usage, i didnt seem that there is an increasing data usage which suggest that with or without the wakelock the data usage is largely based on my own usage.

heres the link where I read further for layer 2 hsic

http://en.wikipedia.org/wiki/LAN_switching

[nadimm]

Having this issue with wifi off.

I found this. Guess there's no solution yet. http://forum.xda-developers.com/showthread.php?t=1656705