我已经安装了 Ubuntu 20.04，当开启蓝牙或连接蓝牙设备时，wifi 速度很慢。
Google 速度测试 bt 开启且设备已连接：低于 1 Mbps。Google
速度测试 bt 开启：低于 40 Mbps。Google
速度测试 bt 关闭：~100 Mbps。
不知道如何调试这个问题。
我已经将 Wi-Fi 省电模式改为 2/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 2
串行通信
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09)
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 1 (rev e4)
00:1c.2 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)
00:1c.4 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 5 (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)
06:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 08)
08:00.0 3D controller: NVIDIA Corporation GK107M [GeForce GT 750M] (rev a1)
08:00.1 Audio device: NVIDIA Corporation GK107 HDMI Audio Controller (rev a1)
lspci-k-s 06：00.0
06:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter
Kernel driver in use: ath9k
Kernel modules: ath9k
systemctl | grep -i blue
sys-devices-pci0000:00-0000:00:1d.0-usb1-1\x2d1-1\x2d1.6-1\x2d1.6:1.0-bluetooth-hci0.device loaded active plugged /sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.6/1-1.6:1.0/bluetooth/hci0
sys-subsystem-bluetooth-devices-hci0.device loaded active plugged /sys/subsystem/bluetooth/devices/hci0
bluetooth.service loaded active running Bluetooth service
bluetooth.target loaded active active Bluetooth
dmesg | grep -i blue
[ 15.430927] Bluetooth: Core ver 2.22
[ 15.430953] Bluetooth: HCI device and connection manager initialized
[ 15.430958] Bluetooth: HCI socket layer initialized
[ 15.430959] Bluetooth: L2CAP socket layer initialized
[ 15.430962] Bluetooth: SCO socket layer initialized
[ 30.656386] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 30.656387] Bluetooth: BNEP filters: protocol multicast
[ 30.656390] Bluetooth: BNEP socket layer initialized
[ 76.132234] Bluetooth: RFCOMM TTY layer initialized
[ 76.132240] Bluetooth: RFCOMM socket layer initialized
[ 76.132245] Bluetooth: RFCOMM ver 1.11
rfkill 列出全部
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
系统盘
Bus 001 Device 005: ID 04f3:002a Elan Microelectronics Corp.
Bus 001 Device 006: ID 0cf3:0036 Qualcomm Atheros Communications
Bus 001 Device 003: ID 0c45:64af Microdia
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
Bus 002 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub