Realtek RTL8761B

From David's Wiki
\( \newcommand{\P}[]{\unicode{xB6}} \newcommand{\AA}[]{\unicode{x212B}} \newcommand{\empty}[]{\emptyset} \newcommand{\O}[]{\emptyset} \newcommand{\Alpha}[]{Α} \newcommand{\Beta}[]{Β} \newcommand{\Epsilon}[]{Ε} \newcommand{\Iota}[]{Ι} \newcommand{\Kappa}[]{Κ} \newcommand{\Rho}[]{Ρ} \newcommand{\Tau}[]{Τ} \newcommand{\Zeta}[]{Ζ} \newcommand{\Mu}[]{\unicode{x039C}} \newcommand{\Chi}[]{Χ} \newcommand{\Eta}[]{\unicode{x0397}} \newcommand{\Nu}[]{\unicode{x039D}} \newcommand{\Omicron}[]{\unicode{x039F}} \DeclareMathOperator{\sgn}{sgn} \def\oiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x222F}\,}{\unicode{x222F}}{\unicode{x222F}}{\unicode{x222F}}}\,}\nolimits} \def\oiiint{\mathop{\vcenter{\mathchoice{\huge\unicode{x2230}\,}{\unicode{x2230}}{\unicode{x2230}}{\unicode{x2230}}}\,}\nolimits} \)

This is a bluetooth 5.0 chip used in many USB Bluetooth 5.0 adapters.

Linux

Reference

  1. Update to linux kernel >=5.8
    • Check with: uname -r
    • On Ubuntu 20.04, just install HWE: sudo apt-get install --install-recommends linux-generic-hwe-20.04
  2. Download the linux driver from one of the links below.
  3. Copy the firmware to the correct location:
    cp -iv rtkbt-firmware/lib/firmware/rtlbt/rtl8761b_fw /usr/lib/firmware/rtl_bt/rtl8761b_fw.bin
    
    cp -iv rtkbt-firmware/lib/firmware/rtlbt/rtl8761b_config /usr/lib/firmware/rtl_bt/rtl8761b_config.bin

Driver Download Links

Purchase