戴尔 XPS 9370 上的 Ubuntu 18.04 间歇性鼠标连接断开

我一直在我的戴尔 XPS 9370 上使用罗技 M720。它安装了 Ubuntu 18.04.1LTS。

在某个日期之前，鼠标在蓝牙上运行良好。在最近一次更新之后（我不记得是哪一个了）。现在，鼠标一会儿工作正常，一会儿完全没有响应。这些工作/非工作时间大致相同，例如 10 秒。我还没有在电脑上尝试过任何其他蓝牙设备，但在 Windows（它是双启动）中，鼠标工作正常。

我尝试使用更新/升级到系统上的所有最新软件包

apt-get update && apt-get upgrade && apt-get dist-upgrade

输出“dmesg | grep Blue”如下：

[    6.095068] Bluetooth: Core ver 2.22
[    6.095079] Bluetooth: HCI device and connection manager initialized
[    6.095082] Bluetooth: HCI socket layer initialized
[    6.095083] Bluetooth: L2CAP socket layer initialized
[    6.095086] Bluetooth: SCO socket layer initialized
[    6.241043] Bluetooth: hci0: using rampatch file: qca/rampatch_usb_00000302.bin

使用;

sudo hcidump -x -i hciX

，我可以在鼠标工作时监控鼠标的事件。虽然鼠标没有响应，但没有消息进入。这些日志很长，所以不确定我是否也应该发布它。

任何帮助深表感谢！

编辑，bluetoothctl 的输出：

[NEW] Controller 9C:B6:D0:89:9E:BC myhostname-XPS-13-9370 [default]
[NEW] Device EA:5B:72:FC:28:28 M720 Triathlon
[NEW] Primary Service
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service003e
    00010000-0000-1000-8000-011f2000046d
    Vendor specific
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service003e/char003f
    00010001-0000-1000-8000-011f2000046d
    Vendor specific
[NEW] Descriptor
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service003e/char003f/desc0041
    00002902-0000-1000-8000-00805f9b34fb
    Client Characteristic Configuration
[NEW] Primary Service
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c
    0000180a-0000-1000-8000-00805f9b34fb
    Device Information
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char0019
    00002a50-0000-1000-8000-00805f9b34fb
    PnP ID
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char0017
    00002a28-0000-1000-8000-00805f9b34fb
    Software Revision String
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char0015
    00002a26-0000-1000-8000-00805f9b34fb
    Firmware Revision String
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char0013
    00002a27-0000-1000-8000-00805f9b34fb
    Hardware Revision String
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char0011
    00002a25-0000-1000-8000-00805f9b34fb
    Serial Number String
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char000f
    00002a24-0000-1000-8000-00805f9b34fb
    Model Number String
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service000c/char000d
    00002a29-0000-1000-8000-00805f9b34fb
    Manufacturer Name String
[NEW] Primary Service
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service0008
    00001801-0000-1000-8000-00805f9b34fb
    Generic Attribute Profile
[NEW] Characteristic
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service0008/char0009
    00002a05-0000-1000-8000-00805f9b34fb
    Service Changed
[NEW] Descriptor
    /org/bluez/hci0/dev_EA_5B_72_FC_28_28/service0008/char0009/desc000b
    00002902-0000-1000-8000-00805f9b34fb
    Client Characteristic Configuration
[NEW] Device 40:4E:36:A1:DD:42 HTC BS 428FB3
Agent registered
[CHG] Device EA:5B:72:FC:28:28 ServicesResolved: no
[CHG] Device EA:5B:72:FC:28:28 Connected: no
[CHG] Device EA:5B:72:FC:28:28 Connected: yes
[CHG] Device EA:5B:72:FC:28:28 ServicesResolved: yes
[M720 Triathlon]#