Issues occur when using STA + AP on 5Ghz [OpenWRT 19.07.7, Archer C7 V5]

[TrendMend]

Description of the problem:

There's an interesting issue that occurs when you have both a STA and an AP network on 5Ghz (2.4 may also be prone, I haven't been able to test yet). The STA network will be fully functional (So it can be used as a WAN up-link in my scenario), but the AP will not accept any clients. I usually get an "IP Configuration Error" on my devices, and basic OpenWRT logs show nothing but multiple client disconnects and reconnects in a short period of time.

My solution to solve this issue for the time being was to install the closed-source variant of ath10k-firmware-qca988x-ct and kmod-ath10k-ct.

Software (OS, Firmware version, kernel, driver, etc):

OpenWRT 19.07.7

Hardware (NIC chipset, platform, etc):

qca988x, Archer C7 V5

Logs (dmesg, maybe supplicant and/or hostap):

N/A - I wasn't able to find any logs suggested by your site that were out of the ordinary when the issue would occur. I will continue to try and capture the issue to provide something to work off of.

[greearb]

The upstream ath10k driver is also open-source, is that what you installed, or did you remove openwrt entirely and run the factory default AP image on your hardware?