I figured it out! Here's what I had to do: (copied from: https://wireless.wiki.kernel.org/en/users/drivers/ath11k/installation)
git clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git cd linux-firmware sudo cp -r ath11k/ /lib/firmware/ So far it is working fine. I am able to close the laptop lid, put it to sleep and WiFi connects automatically after the machine wakes up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879633 Title: Killer 500s (QCA6390) WLAN/BT [17cb:1101] unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1879633/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs