Same issue here after a fresh installation of Kubuntu 26.04 on Lenovo Ideapad s510p laptop with Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter using ath9k driver.
Symptoms : - The Wi-Fi connection is established but drops after around 40 seconds, then is reconnects around 10 seconds later. This cycle repeats endlessly Environment : - I’ve got the same issue on two different Wi-Fi networks - The same computer on the same networks was working perfectly fine with Kubuntu 25.10 - All the other devices connected to these networks work fine, including another computer running Kubuntu 26.10 Tests done so far : - I’ve tried deactivating the energy saver (wifi.powersave=2 instead of 3 in /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf) - I’ve reinstalled Kubuntu 25.10 to confirm that this is not an hardware issue - I’ve upgraded from a working Kubuntu 25.10 to 26.10, to see if it makes a difference compared to a fresh installation of 26.10 Workaround : - I’ve noticed that when I deactivate the Bluetooth, the Wi-Fi stops disconnecting. Side note : - I've also noticed that at the very first connection, the network manager tells me that the password is wrong, then prompt again for the password. I paste the exact same password and it is accepted... This does not happen again if I delete the Wi-Fi network and connect it again, it’s only at the very first connection on each network, just after Kubuntu 26.10 installation. This does not happen on Kubuntu 25.10. Not sure if there is any connection between the two issues. Any idea how to fix this Wi-Fi network dropping issue while keeping the Bluetooth activated ? Thanks ! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2154089 Title: Atheros wifi adapter keeps dropping in 26.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2154089/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
