Ubuntu 18.04-无法识别蓝牙设备

Question

今天，由于某种我无法理解的原因，蓝牙停止了工作。

我一直在寻找没有成功的解决方案。这里是一些信息：

$ lspci -nnk | grep -iA2 net; lsusb; hciconfig -a; dmesg | egrep -i 'blue|firm'
02:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31)
    Subsystem: AzureWave QCA9377 802.11ac Wireless Network Adapter [1a3b:2231]
    Kernel driver in use: ath10k_pci
    Kernel modules: ath10k_pci
Bus 002 Device 002: ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 13d3:5a07 IMC Networks 
Bus 001 Device 003: ID 0bda:5409 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[    0.032895] Spectre V2 : Enabling Restricted Speculation for firmware calls
[   77.689276] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_01.bin (v1.1)
[   77.957809] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:02:00.0.bin failed with error -2
[   77.957815] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/cal-pci-0000:02:00.0.bin failed with error -2
[   77.961313] ath10k_pci 0000:02:00.0: firmware ver WLAN.TF.2.1-00021-QCARMSWP-1 api 6 features wowlan,ignore-otp crc32 42e41877
[  990.193914] Bluetooth: Core ver 2.22
[  990.193940] Bluetooth: HCI device and connection manager initialized
[  990.193944] Bluetooth: HCI socket layer initialized
[  990.193950] Bluetooth: L2CAP socket layer initialized
[  990.193957] Bluetooth: SCO socket layer initialized
[ 1004.099809] Modules linked in: bluetooth ecdh_generic btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c ccm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc nls_iso8859_1 arc4 snd_hda_codec_hdmi spi_pxa2xx_platform 8250_dw hid_multitouch snd_soc_skl snd_hda_codec_generic snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_dsp snd_soc_sst_ipc snd_soc_acpi asus_nb_wmi snd_soc_core asus_wmi sparse_keymap snd_compress ac97_bus wmi_bmof intel_rapl snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel kvm snd_hda_codec irqbypass uvcvideo snd_hda_core videobuf2_vmalloc snd_hwdep videobuf2_memops crct10dif_pclmul crc32_pclmul ghash_clmulni_intel videobuf2_v4l2 snd_pcm videobuf2_core pcbc ax88179_178a videodev snd_seq_midi

如您在此处看到的，没有列出蓝牙设备：

$ sudo rfkill list
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

有帮助吗？我很失望...

Answer 1

最后找到了解决方案。 重新启动计算机没有帮助。 关闭计算机-确实有帮助。 也许它已连接到蓝牙设备的电源。

希望有帮助。