2025may07

UB500 plus on Deepin V23.1

Failed to load rtl8761bu_fw.bin & rtl8761bu_config.bin

$uname -a
Linux jeyi240 6.12.20-amd64-desktop-rolling #23.01.01.23 SMP PREEMPT_DYNAMIC Thu Apr 10 19:56:14 CST 2025 x86_64 GNU/Linux

1/message: failed to load

v231_250507 $dmesg -T |grep blue
[Wed May 7 2025] bluetooth hci0: firmware: failed to load rtl_bt/rtl8761bu_fw.bin (-2)
[Wed May 7 2025] bluetooth hci0: firmware: failed to load rtl_bt/rtl8761bu_config.bin (-2)

2/location of rtl8761bu files
v231_250507 $cd /usr/lib/firmware/rtl_bt

v231_250507 $ls -l |grep 8761
-rw-r--r-- 1 root root 19 Nov 15 17:43 rtl8761bu_config.bin.zst
-rw-r--r-- 1 root root 29940 Nov 15 17:43 rtl8761bu_fw.bin.zst
lrwxrwxrwx 1 root root 24 Nov 15 17:43 rtl8822cu_config.bin.zst -> rtl8761bu_config.bin.zst

summay: no .bin found in /usr/lib/firmware/rtl_bt/

3/unzstd two bin.zst files to .bin

v231_250507 $sudo unzstd rtl8761bu_fw.bin.zst
v231_250507 $sudo unzstd rtl8761bu_config.bin.zst

v231_250507 $ls -l |grep 8761
-rw-r--r-- 1 root root 38343 Nov 15 17:43 rtl8761a_fw.bin.zst
-rw-r--r-- 1 root root 38 Nov 15 17:43 rtl8761b_config.bin.zst
-rw-r--r-- 1 root root 30500 Nov 15 17:43 rtl8761b_fw.bin.zst
-rw-r--r-- 1 root root 19 Nov 15 17:43 rtl8761bu_config.bin.zst
-rw-r--r-- 1 root root 29940 Nov 15 17:43 rtl8761bu_fw.bin.zst
lrwxrwxrwx 1 root root 24 Nov 15 17:43 rtl8822cu_config.bin.zst -> rtl8761bu_config.bin.zst

-rw-r--r-- 1 root root 6 Nov 15 17:43 rtl8761bu_config.bin <<< .bin created
-rwxr-xr-x 1 root root 44484 May 7 15:12 rtl8761bu_fw.bin <<< .bin created

4/ reboot

v231_250507 $dmesg -T |grep bt
[Wed May 7 15:32:21 2025] usbcore: registered new interface driver btusb
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin

v231_250507 $dmesg -T |grep hci0
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: rom_version status=0 version=1
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin
[Wed May 7 15:32:21 2025] Bluetooth: hci0: RTL: cfg_sz 6, total sz 30210
[Wed May 7 15:32:22 2025] Bluetooth: hci0: RTL: fw version 0xdfc6d922

v231_250507 $dmesg -T |grep -i blue
[Wed May 7 2025] usb 1-3: Product: TP-Link Bluetooth USB Adapter
[Wed May 7 2025] Bluetooth: Core ver 2.22
[Wed May 7 2025] NET: Registered PF_BLUETOOTH protocol family
[Wed May 7 2025] Bluetooth: HCI device and connection manager initialized
[Wed May 7 2025] Bluetooth: HCI socket layer initialized
[Wed May 7 2025] Bluetooth: L2CAP socket layer initialized
[Wed May 7 2025] Bluetooth: SCO socket layer initialized
[Wed May 7 2025] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[Wed May 7 2025] Bluetooth: hci0: RTL: rom_version status=0 version=1
[Wed May 7 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin
[Wed May 7 2025] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin
[Wed May 7 2025] Bluetooth: hci0: RTL: cfg_sz 6, total sz 30210
[Wed May 7 2025] Bluetooth: hci0: RTL: fw version 0xdfc6d922
[Wed May 7 2025] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[Wed May 7 2025] Bluetooth: BNEP filters: protocol multicast
[Wed May 7 2025] Bluetooth: BNEP socket layer initialized
[Wed May 7 2025] Bluetooth: MGMT ver 1.23
[Wed May 7 2025] Bluetooth: RFCOMM TTY layer initialized
[Wed May 7 2025] Bluetooth: RFCOMM socket layer initialized
[Wed May 7 2025] Bluetooth: RFCOMM ver 1.11

DONE