Hi there @vigr.
Unfortunately your qca9377 Wifi/BT combo chip is well known for having connectivity issues.
There are a bunch of fixes that are known to help improve connectivity with your qca9377 network adapter posted on the following thread:
In addition, I would be sure to disable the Random Mac Address feature of Network Manager. There are several different methods to accomplish this. A quick search should give you the options available to do this.
Adding additional kernel boot parameters often helps improve the performance of the qca9377 network adapter.
The following command will automatically add these helpful kernel boot parameters to /etc/default/grub:
sudp cp /etc/default/grub /etc/default/grub.bak && sudo sed '/^GRUB_CMDLINE_LINUX_DEFAULT=/s/"$/ ath10k_core.nohwcrypt=1 pcie_aspm=off "/g' -i /etc/default/grub
After adding the above boot parameter(s), run:
sudo update-grub
Then, reboot, and test your connectivity for any improvement.
You may want to test several different workaround methods, if none of the above suggestions help with your disconnect issues.
Try this:
Before you intend to place a call using Google Meet (or some other software), connect your Cellular phone via USB cable to your computer. Through your phones settings utility enable “USB Tethering”.
A new connection name should appear in your system tray’s network connections applet. Switch to this new connection and test your internet speeds via phone tethering. Assuming you have a cellular data plan, and that your speeds are sufficient for internet conferencing this may allow you to workaround your disconnection issue.
Your other option that may be easier, but will cost a bit of money would be to purchase a separate USB Bluetooth Bluetooth dongle for your internet conference calling.
Physically separating your WiFi chip from your Bluetooth chip can help resolve conflicts between WiFi and Bluetooth. Both WiFi and BT use the same band for transmitting their signals. On problematic combo WiFi/BT chips such as yours this often results in disconnect or speed issues. Physically separating the two chips can help in these type of cases. It may be beneficial in these type of cases to connect the external BT dongle via a short USB cable. Any extra separation between between your WiFi and Bluetooth transmitters can help improve signal clash.
Obviously, neither of these methods are a proper solution, but these workarounds may at least provide you with a working option until a proper fix is released.
I know that’s a lot of stuff to digest, but hopefully something there will help with your disconnect problems.
Good luck finding your solution.