Qualcomm Atheros QCA9377 wifi speed drops (or disconnects) when bluetooth headset is connected

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1

Hello,

Whenever I connect a bluetooth headset, the wifi speed significantly drops (making internet unusable), and at times, the wifi disconnects completely.

  • Laptop: Lenovo Y520-15IKBM
  • Wireless: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31)
  • Blueooth HeadSet: Airpods Pro 2
  • Ubuntu Version: 24.04
  • Firmware: 6.8.0-51-generic

Some of the solutions I have tried from similar posts:

  • Ceating a file at /etc/modprobe.d/ath10k.conf (didn’t exist before) and adding the line options ath10k_core btcoex_enable=1
  • sudo iw dev wlp2s0 set power_save off
  • echo "options ath9k btcoex_enable=1" | sudo tee /etc/modprobe.d/ath9k.conf

Kindly find the pastebin link: https://termbin.com/5udj

Thank you in advance.

2

Can you switch the wifi to a 5GHz channel and see if the issue still exists? The ath9k parameter will have no affect and I don’t see the btcoex_enable parameter listed for ath10k_core

I wonder if the wifi power management might be causing this, to disable

sudo iwconfig wlp2s0 power off
sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
3

I have tried both and no change.

4

Are you connecting to a wifi hotspot from an Android phone?

5

No I’m connected to a VDSL router.