Have RB4011iGS+5HacQ2HnD. (thanks MT for this super product name ... LOL)
Had power outage here for like 10 minutes and after power came back on, only 2.4GHz wifi came back and wired connection.
5GHz wifi is not completely dead, as I can still scan with winbox and get to see table with neighbours 5GHz wifis...
But my own defined (and previously perfectly working) SSID does not show up in any of my devices. Disabling and re-enabling the QCA9984 doesn't change anything.
How to even start to troubleshoot, what might have gone wrong?
edit: what is going on. the 5GHz wifi appears after like 20-25minutes afterwards (and started working... by itself.) So the qualcomm chip bootup time is 20+minutes?
disabled; re-enabled and same thing happened second time... it became available after re-enabling after 20+ minutes....