02-14-2015 08:24 AM - edited 02-14-2015 08:30 AM
Had an issue with my detachable keyboard losing bluetooth connection. I then noticed when I would lose this connection and go to the device manager the bluetooth adapter would not show up. This drove me nuts because it was not always happening at any specific time but randomly. I would have to reboot a couple of times for it to come back then all would be good until the next time. After almost two months of this I started to catch on that it would mainly do this when I was on battery power and when I hooked up to the power cord and reboot all would be fine. I finally found the resolution on a Lenovo web site that has cured this issue. Haven't lost connection yet and I have even tried to make it lose connection short of shutting it off.
03-02-2015 07:10 PM
David, that is the issue. If the box is checked then the system is going to shutdown bluetooth to save the battery thus disconnecting the keyboard. I don't want the system shutting off my bluetooth so I unchecked it but when I reboot the box is rechecked allowing the system to shutdown my bluetooth if I ever go to battery power.
03-03-2015 09:20 AM
There is no problem like drop in Bluetooth connectivity in mine. The "Allow the computer to turn off device to save Power" is always checked for me.
Please read this before going in for BIOS Update.
03-03-2015 09:24 AM
Now I'm experiencing issues where my wifi card stops working after going into sleep mode. I have to go in device manager, disable and re-enable it to work.. Power management is also unchecked for this. I tried both ways...
03-03-2015 09:35 AM
Yes I have updated my drivers via HP twice now. And with regards to the workaround..
# 2) Can't select Bluetooth if it's not an option. And I have turned off all power managment.