) has been in the kernel since version 3.6, but you must ensure the linux-firmware package is installed for the Bluetooth firmware to load correctly. Community Insights
To help you find the exact file you need, could you tell me your and which version of Windows you are currently running? Bluetooth Module Atheros Ar5bbu12 Driver
Modern Windows blocks unsigned drivers. Since many AR5BBU12 drivers are community-signed: ) has been in the kernel since version 3
If you have the original driver CD or an extracted driver from Acer/HP: Bluetooth Module Atheros Ar5bbu12 Driver
Because Qualcomm Atheros does not provide direct consumer downloads, drivers must be sourced from the specific laptop manufacturer's support site. Microsoft Learn Supported Systems