[Nexus 4 Q&A, Help & Troubleshooting] Smurph82:
This is just my experience:

Ok this what I have found out so far. For about two weeks my new Nexus 4 has not been able to enter "Deep Sleep".

The phone would only drop to 384mhz even with the screen off. Using BetterBatteryStats I was able to see that

I was having a "Kernel Wakelock" issue, mainly "sns_async_ev_wakelock" and "sns_periodic_wakelock".

I have not seen an issue with the "msm_hsic_host" that some people are seeing.

Now I asked some kernel devs their thoughts on this sns lock issue and all of them said that it is not in the kernel.

It is an app that is running that is causing this issue. So I believe that I have found my offending app. At the bottom is what I have installed

Anyway I tried uninstalling several apps then turned my live wall paper to one that comes installed on the phone.

Here is what I uninstalled

Box

Drive

Google Sky Map

Speed Test

System Lite Panel

Quadrant

Tasks

Ingress

Zooper Widget Pro

I then did some checks with CPUSpy and BetterBatteryStats and like a Christmas miracle there was Deep Sleep while the screen was off.

So now I now that it had to do with something that I had just changed. I then proceeded to install these app one by one and set

them back up while I went all the time checking to see if the phone would reach Deep Sleep while the screen was off.

After I had re-installed all apps that I had uninstalled above I noticed that the phone would still enter Deep Sleep meaning that the Kernel Wakelocks

were not getting stuck. This worried me as it meant that non of those app was the offending app.

I then reset my Live Wall Paper and guess which one it is.

Snowfall Live Wallpaper

About 20 secs after turning it back on the phone would no longer enter Deep Sleep with the screen off. Then I set the

wallpaper back to a stock live wallpaper and Force Stopped the Snowfall Live Wallpaper and in about 5 secs the phone would enter

Deep Sleep again and has continued to do so for the rest of the day.

I am going to write the developer and inform them that whatever they are using is not allowing the Nexus 4 to enter deep sleep.

Now I am not saying that the "sns_async_ev_wakelock" and "sns_periodic_wakelock" still do not increase they just increase very very very slowly.

And my battery life has gotten better as a result.

Maybe the OP should start a list of all the apps that are causing this issue so we may contact the developer and get them fixed.

Action Launcher Pro

Barcode Scanner

Battery Widget? Reborn!

BetterBatteryStats

BusyBox

CPU Spy

Cerberus anti theft

Chrome

Falcon Pro(for Twitter)

Gmail

Google Authenticator

Google Calendar

Google Currents

Google Drive

Google Earth

Google Play Books

Google Play Magazines

Google Play Movies & Tv

Google Play Music

Google Play services

Google Reader

Google Search

Google Wallet

Google+

Ingress

Maps

Nexus 4 Display Control

Root Explorer

SQLite Editor

Sky Map

Snapseed

Snowfall Live Wallpaper

Speedtest.net

Street View

SuperSU

SuperSU Pro

SystemPanelLite Task Manager

Tasks

TeamViewer

Voice Search

Wave

Wifi Analyzer

XDA Premium HD

Youtube

Zooper Widget Pro

franco.Kernel update