TF300 not going into deep sleep after 4.21 update

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Senior Member
Feb 5, 2011
San Diego
I performed the 4.21 update on March 4. Yesterday I pulled my tablet out and the battery was completely drained. Before I could let it sit for days on end with almost no battery loss. so i fully charged it up and let it sit overnight. I lost 18% from the tablet and 12% from the dock batteries over 9 hours. CPU spy shows my tf300 going into deep sleep for only 1 hour. out of those 9. I did not change any settings before or after update. Disconnect network is set to always. power is set to balanced. My TF300 is bone stock. No mods.

Sent from my ASUS Transformer Pad TF300T using xda app-developers app

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