What's going on ,4 hours sleep costs 20% battery

[jnjroach]

I have nothing connected but cover, one thing is I have a Bluetooth headphone, if not play music, my bt headphone kept saying BT IS CONNECTED every 20 second.

Bingo...the Bluetooth Radio is USB based as well....

From Device Manager:

\Driver\BTHUSB

 

[yonghong]

I delete the headphone in BT device , see what happens , thanks for you guys. 'Help, really appreciate.

 

[yonghong]

These 3 times connected standby are all hot or warm in the SP3's back.

 

[yonghong]

The wifi card is usb device too , do I need to change wifi card setting back to default, I changed it to Max performance.

 

[jnjroach]

Actually the WLAN part is on the PCI Bus, and the Sleep Study breaks WiFi and Networking out as a separate item, but it the Max Performance indirectly could be impacting the ability of selective suspend on the entire card.

The Marvell Card includes WiFi, Bluetooth, FM Radio and NFC (which isn't enabled)

 

[yonghong]

Thanks for you guys ,this time the result is getting better , 1 hour sleep , battery drained from 48% to 46% ，just 2% an hour.

 

[yonghong]

and the back is pretty cool

 

[yonghong]

I use powercfg / requests , it's said Realtek HD Audio , an audio stream is currently in use.

 

[yonghong]

 

[jnjroach]

I use powercfg / requests , it's said Realtek HD Audio , an audio stream is currently in use.

Do you have music on the SD Card? Or have you used Bluetooth Streaming from a specific App?

 

[yonghong]

Do you have music on the SD Card? Or have you used Bluetooth Streaming from a specific App?

Yes I have , and use metro music to play SD's music by my BT headphone. the last time test I delete both ,SD card & BT headphone device.

 

[yonghong]

Do you have music on the SD Card? Or have you used Bluetooth Streaming from a specific App?

2% drain for 1 hour ,is it ok ,how about yours?