networking - Computer loses connection, then can't see any wireless networks - Ask Ubuntu


i started using ubuntu 16.04 lts after lifetime of using windows. have started getting used it, i'm still not experienced. think have been using ubuntu @ least month now, problem started 2 days ago.

basically fine, of sudden i'm offline , can't see networks when open networks tab. restart fix 90% of time. when doesn't work after restart, restart again :d.

so getting annoying since have restart 3-4 times day, , know fix this.

*i tried restarting network manager, didn't work.

service network-manager restart

edit 1: output of lspci -knn | grep net -a2

03:00.0 network controller [0280]: qualcomm atheros ar9285 wireless network adapter (pci-express) [168c:002b] (rev 01)     subsystem: azurewave aw-nb037h 802.11bgn wireless half-size mini pcie card [ar9002wb-1ngcd] [1a3b:2c37]     kernel driver in use: ath9k


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