I installed Ubuntu 18.04 LTS in this week and now I have a problem with wifi connection. The WiFi connection auto disconnected every 5 - 10 minutes but wifi signal is still fine.
I did a search, found some answers for older versions of Ubuntu and tried it but the problem was not resolved.
Here is my wireless adapter information:
description: Wireless interface product: QCA9565 / AR9565 Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:02:00.0 logical name: wlp2s0 version: 01 serial: a4:db:30:03:32:8c width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=4.15.0-20-generic firmware=N/A ip=10.0.138.105 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:18 memory:f0600000-f067ffff memory:f0680000-f068ffff