Quoting "O. Hartmann" <ohart...@zedat.fu-berlin.de>:
Since a couple of days I get this weird console-and-log-spamming message:
ath0: stuck beacon; resetting (bmiss count 4)
The machine in question is running the most recent CURRENT right now:
FreeBSD 11.0-CURRENT #2 r272471: Fri Oct 3 13:03:58 CEST 2014 amd64
and the box acts as a gateway with WiFi access point via hostapd and
this WiFi hardware:
[...]
ath0: <Atheros 9287> mem 0xf7e00000-0xf7e0ffff irq 16 at device 0.0 on pci1
ath0: [HT] enabling HT modes
ath0: [HT] enabling short-GI in 20MHz mode
ath0: [HT] 1 stream STBC receive enabled
ath0: [HT] 1 stream STBC transmit enabled
ath0: [HT] 2 RX streams; 2 TX streams
[...]
ath0: 2GHz radio: 0x0000; 5GHz radio: 0x00c0
What is this and how can I get rid of it?
It means that you have run into a well-known and long lasting hardware
bug in Atheros Wifi chipsets, where they sometimes get stuck and stops
sending out beacons.
You get that message when the device driver detects that this has
happened and resets the chip to get things going again.
There is, AFAIK, no way of making sure the problem cannot happen, but
you might be able to reduce the frequency of it happening by reducing
the amount of interference you receive from other wireless devices.
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