Ubuntu 20.04 无法使用蓝牙适配器 (TP-LINK UB500)

Question

购买了蓝牙适配器 (TP-LINK UB500)，但系统无法运行蓝牙。\n我有 Windows 10 的 Dualbooth，在 Windows 系统上，适配器工作正常。

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问题：\n加密狗已成功连接，但在设置窗口中显示：

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没有找到蓝牙

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插入适配器以使用蓝牙

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更多细节：

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lusb\n\nBus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub\nBus 003 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver\nBus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub\nBus 002 Device 002: ID 0bda:0411 Realtek Semiconductor Corp. USB3.2 Hub\nBus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub\nBus 001 Device 005: ID 05e3:0610 Genesys Logic, Inc. 4-port hub\nBus 001 Device 003: ID 0b05:1939 ASUSTek Computer, Inc. AURA LED Controller\nBus 001 Device 007: ID 20d6:2016  \nBus 001 Device 006: ID 046d:c52b Logitech, Inc. Unifying Receiver\nBus 001 Device 004: ID 2357:0604 TP-Link \nBus 001 Device 002: ID 0bda:5411 Realtek Semiconductor Corp. USB2.1 Hub\nBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub\n\nsystemctl status bluetooth\n\xe2\x97\x8f bluetooth.service - Bluetooth service\n     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)\n     Active: inactive (dead)\n       Docs: man:bluetoothd(8)\n\nrugp. 15 21:04:13 devpc systemd[1]: Condition check resulted in Bluetooth service being skipped.\nrugp. 15 19:07:49 devpc systemd[1]: Condition check resulted in Bluetooth service being skipped.\n

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系统提示btusb模块未安装

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modprobe btusb\nmodprobe: FATAL: Module btusb not found in directory /lib/modules/5.15.0-46-generic\n

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但当试图找到它时，它返回：

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locate btusb\n/home/viktoras/linux-5.15/Documentation/devicetree/bindings/net/btusb.txt\n/home/viktoras/linux-5.15/drivers/bluetooth/.btusb.c.swp\n/home/viktoras/linux-5.15/drivers/bluetooth/.btusb.ko.cmd\n/home/viktoras/linux-5.15/drivers/bluetooth/.btusb.mod.cmd\n/home/viktoras/linux-5.15/drivers/bluetooth/.btusb.mod.o.cmd\n/home/viktoras/linux-5.15/drivers/bluetooth/.btusb.o.cmd\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.c\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.ko\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.mod\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.mod.c\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.mod.o\n/home/viktoras/linux-5.15/drivers/bluetooth/btusb.o\n/usr/lib/modules/5.15.0-43-generic/kernel/drivers/bluetooth/btusb.ko\n/usr/lib/modules/5.15.0-46-generic/kernel/drivers/bluetooth/btusb.ko\n/usr/lib/modules/5.15.0-46-generic/kernel/drivers/bluetooth/btusb.ko.bak\n/usr/lib/modules/5.15.0-46-generic/kernel/drivers/bluetooth/btusb_bak\n/usr/lib/modules/5.15.0-46-generic/kernel/drivers/bluetooth/rtk_btusb.ko\n

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有人可以帮我解决这个问题吗？有什么建议么？

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我已阅读并尝试了这些解决方案，但仍然没有运气：\n Resource#1、Resource#2、Resource#3、Resource#4等等

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Answer 1

我能够在 Ubuntu 20.04 上连接我的 UB500。

运行后sudo dmesg | grep -i bluetooth我发现缺少以下固件文件：

Bluetooth RTL: firmware file rtl_bt/rtl8761bu_fw.bin not found 

我的解决方案：

复制rtl8761b_fw固件：

cp /usr/lib/firmware/rtl_bt/rtl8761b_fw.bin /usr/lib/firmware/rtl_bt/rtl8761bu_fw.bin
cp /usr/lib/firmware/rtl_bt/rtl8761b_config.bin /usr/lib/firmware/rtl_bt/rtl8761bu_config.bin

运行 modprobe：

sudo modprobe btusb

重启蓝牙服务：

sudo systemctl restart bluetooth.service

然后重新插入蓝牙适配器。