我正在尝试通过蓝牙将扬声器与电脑配对。我要做的第一件事是转到“设置”，然后转到“蓝牙”。启用它后，我的屏幕如下所示：
我已经等了几分钟，尽管我打开了手机和扬声器的蓝牙，但它仍在尝试查找任何设备。
我检查了手机和扬声器的蓝牙是否已配对，并且连接已正确建立。
我尝试了这个帖子但我的电脑仍然找不到任何设备。
关于如何解决此问题有什么想法吗？
编辑：当我运行时，lsusb; dmesg | egrep -i 'blue|firm'我收到以下消息
Bus 001 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 004: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 001 Device 003: ID 0bda:5756 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 0.091436] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.121577] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 21.659435] Bluetooth: Core ver 2.22
[ 21.659464] Bluetooth: HCI device and connection manager initialized
[ 21.659469] Bluetooth: HCI socket layer initialized
[ 21.659471] Bluetooth: L2CAP socket layer initialized
[ 21.659475] Bluetooth: SCO socket layer initialized
[ 23.135025] Bluetooth: hci0: BCM: chip id 70
[ 23.136022] Bluetooth: hci0: BCM: features 0x06
[ 23.152020] Bluetooth: hci0: BCM43142A
[ 23.156016] Bluetooth: hci0: BCM43142A0 (001.001.011) build 0000
[ 24.346628] bluetooth hci0: Direct firmware load for brcm/BCM43142A0-0a5c-21d7.hcd failed with error -2
[ 24.346632] Bluetooth: hci0: BCM: Patch brcm/BCM43142A0-0a5c-21d7.hcd not found
[ 26.369252] Bluetooth: hci0: command 0x1003 tx timeout
[ 26.370086] Bluetooth: hci0: unexpected event for opcode 0x1003
[ 48.580829] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 48.580832] Bluetooth: BNEP filters: protocol multicast
[ 48.580837] Bluetooth: BNEP socket layer initialized
[ 217.789270] Bluetooth: RFCOMM TTY layer initialized
[ 217.789283] Bluetooth: RFCOMM socket layer initialized
[ 217.789293] Bluetooth: RFCOMM ver 1.11