I'm running into a problem with my fresh installation of 380.59 on my AC68. I was using an old version of official Asus firmware until now (378.4585), and everything was fine on that setup. I chose .59 (instead of .61) because I didn't want to get locked down to the new firmware revisions yet (in case I have a problem, I want to be able to go back). I did a reboot, install, reset, reboot routine to ensure I had a clean installation.
The problem only seems to occur on my wife's Android phone - all other devices work fine. On hers, we often get an exclamation "!" mark after some time on the Wifi (2.4GHz). My phone (same model, same stock-rooted firmware with nothing really changed beyond root access) and every other device (laptops, desktops, Tivos, etc) doesn't seem to have any problems on the new firmware - just hers. I've asked for help on the Android XDA forums but am not getting any help there... so I came here since this was the latest change I made to the network.
The device still reports having an IP (v4 and v6... not sure how to disable the latter, even though IPv6 is disabled in the router?) but it simply won't connect anywhere at all (LAN or WAN). The connection doesn't self-repair at any point, and just remains this way unless we manually turn the wifi off and on again.
One variable seems to be that we have a Tile tracker on her phone, along with the associated app. That app uses Bluetooth. So far, when I have disabled BT I have not seen the wifi-exclamation happen... not sure why this would be the case at all. I've tried many other things, with no correlation... this is the only item that MIGHT correlate (I don't want to jump to causation as we've only turned off BT for about a day now). My device normally has BT off, fwiw... maybe I will try turning it on to see if it shows the same problem.
I haven't made too many config changes, but I have disabled NAT accel, disabled "Reducing USB 3.0 interference", and am running a USB drive on the 2.0 port.
I'm running out of ideas, so any help is appreciated. Thank you!