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

jnjroach

Administrator
Staff member
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
 
OP
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yonghong

Member
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

Administrator
Staff member
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)
 
OP
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yonghong

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

yonghong

Member
Screenshot (16).png
 
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