openSUSE Tumbleweed disconnects from Omnia


I am running openSUSE Tumbleweed with Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter. After latest snapshot (20170817) my notebook after cca 10 minutes started to disconnect from wifi router. NM applet shows it’s connected, but there is no access. What is strange that I have tested it on 2 routers and it disconnects only from Turris Omnia! Workaround is to run nmcli con up .

Also tried newer snapshot with 4.12.8 with same error. Can anyone point me how can I debug this issue?
And also with kernel 4.11.8 it works without any problem.

thanks, m.

It looks like bug in kernel 4.12.x