Thank you for your reply. My wireless driver is Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (168c:0042). I used the non-free firmware image to install the operating system and afterwards I modified the sources list with the official one. The problem must have started after my first terminal update (sudo apt update, sudo apt upgrade). Before that, my wireless was always recognized. After I have applied all updates, sometimes it is recognized and sometimes not. I have to restart my laptop (occasionally twice) to have wireless working. Maybe installing firmware-atheros_20190114-2_all.deb would help. Thanks.
Last edited by nikoslagios; 07-21-2021 at 01:34 AM.
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