#12372: ar71xx/ath9k (WRT160NL): wifi client's connection quality suddenly drops
after 18-24h hostapd uptime
---------------------+--------------------------------------------
Reporter: dap@… | Owner: nbd
Type: defect | Status: reopened
Priority: normal | Milestone: Barrier Breaker 14.07
Component: kernel | Version: Attitude Adjustment 12.09 Beta
Resolution: | Keywords: ar71xx ath9k wrt160nl loss
---------------------+--------------------------------------------
Comment (by italovalcy@…):
Same problem with WR842NDv2 (chipset Atheros AR9341). I'm using openwrt
BB kernel 3.10.49) and wifi in Ad-hoc mode. The problem is about
transmission erros:
{{{
prompt# iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"foobar"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 06:DA:85:6E:97:4B
Tx-Power=18 dBm
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
prompt# iw dev wlan0 station dump
Station a0:f3:c1:0e:16:c3 (on wlan0)
inactive time: 50 ms
rx bytes: 548427
rx packets: 12661
tx bytes: 45830
tx packets: 455
tx retries: 134
tx failed: 363
signal: -44 [-46, -49] dBm
signal avg: -44 [-46, -48] dBm
tx bitrate: 24.0 MBit/s
rx bitrate: 54.0 MBit/s
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
}}}
If I run a tcpdump on that interface, I can see the kernel answer but the
packet is not transmitted as I cannot see it on the other device. I have
tried the workround (echo 0 > /sys/kernel/debug/ieee80211/phy0/ath9k/ani),
but it didn't work for me.
Do you have any other idea?
Thanks.
--
Ticket URL: <https://dev.openwrt.org/ticket/12372#comment:137>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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