If your system shows the Bluetooth adapter is working but you cannot find your mouse or headphones, ensure the Bluetooth service is running. On Windows, press Windows + R , type services.msc , and ensure "Bluetooth Support Service" is started. On Linux, if scanning fails ( hcitool scan returns nothing), ensure the device is in pairing mode and check for rfkill blocking:
The is a combination wireless and Bluetooth module commonly found in older laptops, particularly those manufactured by Toshiba, HP, and Dell around the 2010–2013 era. While the Wi-Fi portion of these cards usually works out of the box with modern operating systems, the Bluetooth portion often requires specific driver installations or firmware updates to function correctly. Bluetooth Module Atheros Ar5bbu12 Driver
The AR5BBU12 connects via internal USB. Windows often cuts power to save energy. If your system shows the Bluetooth adapter is
: You can often find the driver through the official Acer Support Site . Search using your specific laptop model number (e.g., Aspire 3830TG or One 522). While the Wi-Fi portion of these cards usually
Because they are separate subsystems. Wi-Fi uses PCI-E; Bluetooth uses USB. Your USB controller or driver for the Bluetooth side is broken.