Disassociated due to inactivity

What is "Disable Inactivity Polling" in the advanced wireless settings for an AP?
I get a lot of :

Sat Jun  6 01:01:13 2020 kern.err kernel: [292237.870175] mt76x2u 2-1:1.0: error: mt76x02u_mcu_wait_resp failed with -110
Sat Jun  6 01:06:34 2020 daemon.notice hostapd: wlan5: AP-STA-POLL-OK ae:c9:ca:9c:87:f2
Sat Jun  6 01:11:45 2020 daemon.notice hostapd: wlan5: AP-STA-POLL-OK ae:c9:ca:9c:87:f2
Sat Jun  6 01:17:06 2020 daemon.notice hostapd: wlan5: AP-STA-DISCONNECTED ae:c9:ca:9c:87:f2
Sat Jun  6 01:17:06 2020 daemon.info hostapd: wlan5: STA ae:c9:ca:9c:87:f2 IEEE 802.11: disassociated due to inactivity
Sat Jun  6 01:17:07 2020 daemon.info hostapd: wlan5: STA ae:c9:ca:9c:87:f2 IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sat Jun  6 02:27:39 2020 kern.info kernel: [297424.303969] usb 2-1: USB disconnect, device number 7
Sat Jun  6 02:27:39 2020 kern.err kernel: [297424.526387] mt76x2u 2-1:1.0: mac specific condition occurred

that kills my AP.

I wonder if "disassociated due to inactivity" is significant so I'm trying a big number in "Station inactivity limit".

  • What version of Openwrt are you running?
  • What device?

OpenWrt SNAPSHOT r13518-c37487a63d / LuCI Master git-20.154.54590-05f07e5
Rasypberry Pi 4.

Disconnect due to inactivity is normal with clients like smartphones that put their radio to sleep for long times to save power. The client should simply reconnect when it has something to send. This should not "kill the AP".

Did you unplug the USB card at 2:27 or did it crash disconnect by itself? The latter often means there is insufficient DC power.

I have a USB-C Power Supply, 5.1V 3.0A, Black, UL Listed
Do I need more amps?
I didn't unplug it until way after.
That's what it said when it stopped working.

I am using both USB 3 ports.
One is a USB3 to ethernet adapter and the other is a USB 3 wifi adapter.