蓝牙最近（今天）停止工作了。它被检测到并且小程序不再出现。
未出现在rfkill list
brian:~$ rfkill list
0: dell-rbtn: Wireless LAN
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
未出现在lspci
brian:~$ lspci
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
02:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)
dmesg 输出：
brian:~$ dmesg | grep -i bluetooth
[ 341.111791] Bluetooth: Core ver 2.21
[ 341.111803] Bluetooth: HCI device and connection manager initialized
[ 341.111805] Bluetooth: HCI socket layer initialized
[ 341.111807] Bluetooth: L2CAP socket layer initialized
[ 341.111810] Bluetooth: SCO socket layer initialized
[ 871.825132] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 871.825133] Bluetooth: BNEP filters: protocol multicast
[ 871.825136] Bluetooth: BNEP socket layer initialized
尝试过service bluetooth restart，没有消息。bluetoothctl挂在“正在连接......”消息上。
我还验证了该适配器没有在 BIOS 中被禁用（甚至没有此选项）。
我还能尝试什么来诊断该问题？