[FS#176] Disapearing radios for ath9k introduced between August 31 and September 4th

[LEDE Bugs]

The following task has a new comment added:

FS#176 - Disapearing radios for ath9k introduced between August 31 and September 4th
User who did this - Bluse-Blue (Bluse)

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Hi all,

Within our AP zoo I did found a TPLink TL-WR941nd showing the same symptomes of disapearing AP after some minutes.

lede version: snapshot image (HEAD, r1619) - so all power save related patches are included

My observations I want to add are:

  - while downloading viw WiFi from the router in question, the total_ps_buffered counter increases until 128

while true; do cat /sys/kernel/debug/ieee80211/phy0/total_ps_buffered, date, sleep 8; done

Sat Sep 17 22:44:03 UTC 2016
0
Sat Sep 17 22:44:11 UTC 2016
0
Sat Sep 17 22:44:19 UTC 2016
1
Sat Sep 17 22:44:27 UTC 2016
2
Sat Sep 17 22:44:37 UTC 2016
3
Sat Sep 17 22:44:45 UTC 2016
6
Sat Sep 17 22:44:53 UTC 2016
8
Sat Sep 17 22:45:01 UTC 2016
11
Sat Sep 17 22:45:09 UTC 2016
12
Sat Sep 17 22:45:17 UTC 2016
15
...



  - when connected throu WiFi with this router, the output of dmesg or logread just prints the first couple of lines and than the ssh connection freezes and I have to reconnect.

Greetings from Berlin
Bluse
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=176#comment468