Lenovo Thinkpad E480 - 蓝牙在 Ubuntu 18.04 中不起作用

Question

我最近购买了一台联想 Thinkpad E480 笔记本电脑，我在上面安装了 Ubuntu 18.04，除了无法打开蓝牙外，一切正常。请帮忙。

我关注了这个链接，但我无法解决这个问题。

下面是一些命令的输出。

lspci -nnk | grep -iA3 net

03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:506f]
    Kernel driver in use: r8168
    Kernel modules: r8168
05:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
    Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
    Kernel driver in use: rtl8821ce
    Kernel modules: 8821ce
06:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8621] (rev 01)
rajvi@rbt3105:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 06cb:00a2 Synaptics, Inc. 
Bus 001 Device 003: ID 13d3:56a6 IMC Networks 
Bus 001 Device 002: ID 0bda:c024 Realtek Semiconductor Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

rfkill 列表

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

用户名 -r

4.15.0-33-generic

留言 | egrep -i '蓝色|坚定'

[    0.034532] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    0.127509] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    2.488999] usb 1-5: Product: Bluetooth Radio 
[    2.688316] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_01.bin (v1.1)
[    4.540443] psmouse serio2: trackpoint: Elan TrackPoint firmware: 0x10, buttons: 3/3
[   21.991043] RTW: rtl8821c_fw_dl Download Firmware from array success
[   22.619647] Bluetooth: Core ver 2.22
[   22.619660] Bluetooth: HCI device and connection manager initialized
[   22.619662] Bluetooth: HCI socket layer initialized
[   22.619664] Bluetooth: L2CAP socket layer initialized
[   22.619666] Bluetooth: SCO socket layer initialized
[   22.653194] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is blocked
[   24.796211] Bluetooth: hci0: command 0x1001 tx timeout
[   29.654113] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   29.654114] Bluetooth: BNEP filters: protocol multicast
[   29.654116] Bluetooth: BNEP socket layer initialized
[   32.988224] Bluetooth: hci0: HCI_OP_READ_LOCAL_VERSION failed (-110)

看来我得克隆，编译和安装所需的蓝牙驱动程序，请指导我使用哪个蓝牙驱动程序以及如何安装（如果可能的话，请附上步骤）。

PS：如果需要任何进一步的信息来解决这个问题，请告诉我，我将根据给出的指导在问题中添加所需的信息（如果有）。

编辑：

您可以看到即使蓝牙开关已打开，它仍然显示蓝牙已“关闭”。

Answer 1

内核更新到版本 4.15.0-34-generic 或更高版本修复了该问题。

我的工作环境也证实了这一点。由于其他工作原因，我的笔记本电脑不得不使用Windows-10（暂时彻底淘汰ubuntu）一段时间，这让我无法解决这个问题，遗憾回复晚了。