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WiFi slows down when Bluetooth headset is connected.

$ lspci -knn | grep Net -A2; lsusb
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31)
    Subsystem: Lite-On Communications Inc QCA9377 802.11ac Wireless Network Adapter [11ad:08a6]
    Kernel driver in use: ath10k_pci
    Kernel modules: ath10k_pci
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f2:b571 Chicony Electronics Co., Ltd    
Bus 001 Device 002: ID 04ca:3015 Lite-On Technology Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

How can I debug/fix this?

David Foerster
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DakEnviy
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1 Answers1

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I've had this issue too, but it's fixed in anything running Linux 4.16 or higher. See: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=v4.16.13&id=0a03f98b98c201191e3ba15a0e33f46d8660e1fd (that's the patch) And it's already integrated in Bionic Beaver 18.04

Ioan
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