直到今天我需要添加 USB 存储设备时，蓝牙都工作得很好。 USB 设备无法工作，系统看不到它（lsblk没有显示任何内容）。于是尝试重启系统。在此之前我做到了pacman -Syu。我还从 AUR 安装（后来卸载了 virtualbox-ext-oracle）。现在系统可以看到 USB 存储驱动器，但蓝牙不起作用。你能帮忙吗？
[I] ➜ sudo systemctl restart bluetooth.service bluetooth.target
[I] ➜ systemctl | grep bluetoo
sys-devices-pci0000:00-0000:00:14.0-usb1-1\x2d14-1\x2d14:1.0-bluetooth-hci0.device loaded active plugged /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/1-14:1.0/bluetooth/hci0
sys-subsystem-bluetooth-devices-hci0.device loaded active plugged /sys/subsystem/bluetooth/devices/hci0
bluetooth.service loaded active running Bluetooth service
bluetooth.target loaded active active Bluetooth
[I] ➜ bluetoothctl
Agent registered
[bluetooth]# power on
No default controller available
[bluetooth]# scan on
No default controller available
[bluetooth]#
[I] ➜ sudo rmmod btusb
[I] ➜ sudo modprobe btusb
[I] ➜ dmesg | grep Bluetooth
[ 10.777582] Bluetooth: Core ver 2.22
[ 10.777590] Bluetooth: HCI device and connection manager initialized
[ 10.777592] Bluetooth: HCI socket layer initialized
[ 10.777594] Bluetooth: L2CAP socket layer initialized
[ 10.777595] Bluetooth: SCO socket layer initialized
[ 11.329615] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.329615] Bluetooth: BNEP filters: protocol multicast
[ 11.329618] Bluetooth: BNEP socket layer initialized
[ 13.036936] Bluetooth: hci0: command 0xfc05 tx timeout
[ 13.037031] Bluetooth: hci0: Reading Intel version information failed (-110)
[ 779.744086] Bluetooth: hci0: Reading Intel version information failed (-110)
[ 779.744091] Bluetooth: hci0: command 0xfc05 tx timeout
[ 2330.676540] Bluetooth: hci0: Reading Intel version information failed (-110)
[ 2330.676549] Bluetooth: hci0: command 0xfc05 tx timeout
[I] ➜ rfkill list
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
3: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
4: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
[I] ➜ pa -Qs blue
local/bluedevil 1:5.17.5-1 (plasma)
Integrate the Bluetooth technology within KDE workspace and applications
local/bluez 5.52-2
Daemons for the bluetooth protocol stack
local/bluez-libs 5.52-2
Deprecated libraries for the bluetooth protocol stack
local/bluez-qt 5.66.0-1 (kf5)
Qt wrapper for Bluez 5 DBus API
local/bluez-utils 5.52-2
Development and debugging utilities for the bluetooth protocol stack
local/pulseaudio-bluetooth 13.0-3
Bluetooth support for PulseAudio
[I] ➜ id
uid=1000(art) gid=1000(art) groups=1000(art),108(vboxusers),991(lp)
[I] ➜ uname -a
Linux artpc 5.4.12-arch1-1 #1 SMP PREEMPT Tue, 14 Jan 2020 21:44:31 +0000 x86_64 GNU/Linux
更新。在 ArchLinux 论坛发帖：https://bbs.archlinux.org/viewtopic.php?pid=1883397#p1883397
答案1
我在 5.15.41 内核和 AX200 上遇到了同样的问题。这为我解决了这个问题：
sudo rmmod btusb
sudo rmmod btintel
sudo modprobe btintel
sudo modprobe btusb
答案2
我使用的是 USB Kali Linux（或）Live Kali Linux，内核版本为 6。
问题是hciconfig没有检测到蓝牙适配器，它显示了我bdaddress:00:00:00:00:00。命令hciconfig hci0 up
显示Operation not permitted(1)
在我尝试了上述所有类型的事情之后，很多浏览花费的时间比专家多得多，我终于通过以下步骤解决了它：
- 打开终端
- 输入命令
sudo apt-get -y install inxi，然后inxi -bE
这显示了您设备中的完整硬件详细信息。在这里您可以看到除00:00...以外的蓝牙地址，即您的系统蓝牙地址。
- 使用命令
hciconfig- 这里的 bdaddress 现在改变了 - 要再次启动蓝牙服务，请键入命令
service bluetooth start
bluetoothctl
scan on
此处控制器已使用您的蓝牙硬件地址注册。
立即连接您的蓝牙设备。