After shutdown/restart, ath10k sometimes stops receiving packets

Ben Greear greearb at
Sun Jun 15 09:13:06 PDT 2014

On 06/14/2014 10:45 PM, Kalle Valo wrote:
> Avery Pennarun <apenwarr at> writes:
>> On Sat, Jun 14, 2014 at 12:45 PM, Kalle Valo <kvalo at> wrote:
>>> Avery Pennarun <apenwarr at> writes:
>>>> We are experiencing a relatively-rare-but-not-rare-enough case which
>>>> has approximately these steps:
>>>> - run a wifi AP for a while with a station or two connected
>>>> - shut down hostapd (stations all get disconnected of course)
>>>> - restart hostapd (perhaps on another channel or with different settings)
>>>> After that, an external wifi sniffer can see beacons being transmitted
>>>> by the AP as expected, but all packets from stations trying to connect
>>>> are ignored.
>>> Do you have any guesses how often this happens? Once a day, once a week?
>> Someone in our QA group seems to be able to produce it after two or
>> three test runs with Veriwave.  Before each run, he stops and restarts
>> hostapd.
> That's quite often. Was he testing DFS or something else? Maybe this is
> related to radar detection or channel switching?

For my firmware, I hacked a WMI message to return some register values.

But, can they be read directly through the pci-e bus somehow (on stock firmware)?
It would be great to get a register dump for debugging stuff like this.

Could check the rx-filters and other such registers to see if there is
some pattern involved.


Ben Greear <greearb at>
Candela Technologies Inc

More information about the ath10k mailing list