我在 Ubuntu 18.04 上通过蓝牙配对华为的 Freebuds 3 时遇到问题。我已经将 bluez 更新到 5.50。配对时我得到的只是一个加载圈，然后是消息Not set up。有人有线索吗？
在配对过程中，系统日志的一部分看起来像这样：
Apr 11 13:44:02 kj-XPS-15-7590 systemd[1]: Starting Load/Save RF Kill Switch Status...
Apr 11 13:44:02 kj-XPS-15-7590 systemd[1]: Started Load/Save RF Kill Switch Status.
Apr 11 13:44:02 kj-XPS-15-7590 kernel: [ 8427.752680] debugfs: File 'le_min_key_size' in directory 'hci0' already present!
Apr 11 13:44:02 kj-XPS-15-7590 kernel: [ 8427.752689] debugfs: File 'le_max_key_size' in directory 'hci0' already present!
Apr 11 13:44:32 kj-XPS-15-7590 gnome-control-c[22033]: Setting up /org/bluez/hci0/dev_FC_94_35_C1_C4_A5 failed: Timeout was reached
Apr 11 13:44:34 kj-XPS-15-7590 gnome-control-c[22033]: Setting up /org/bluez/hci0/dev_FC_94_35_C1_C4_A5 failed: GDBus.Error:org.bluez.Error.InProgress: In Progress
Apr 11 13:44:40 kj-XPS-15-7590 systemd[1]: Starting Load/Save RF Kill Switch Status...
Apr 11 13:44:40 kj-XPS-15-7590 systemd[1]: Started Load/Save RF Kill Switch Status.