[ath9k-devel] ath9k: AWAKE -> NETWORK_SLEEP

[Frode V. Fjeld <frode@netfonds.no>]

Hi,

I have a new PC running ubuntu 9.10 and ath9k:

# lspci -nn | grep Atheros
04:00.0 Network controller [0280]: Atheros Communications Inc. AR928X
Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01)

# modinfo ath9k
filename:       /lib/modules/2.6.31-17-generic/updates/cw/ath9k.ko
license:        Dual BSD/GPL
description:    Support for Atheros 802.11n wireless LAN cards.
author:         Atheros Communications
srcversion:     918698AEA3CBE61D0E996E6
alias:          pci:v0000168Cd0000002Esv*sd*bc*sc*i*
alias:          pci:v0000168Cd0000002Dsv*sd*bc*sc*i*
alias:          pci:v0000168Cd0000002Bsv*sd*bc*sc*i*
alias:          pci:v0000168Cd0000002Asv*sd*bc*sc*i*
alias:          pci:v0000168Cd00000029sv*sd*bc*sc*i*
alias:          pci:v0000168Cd00000027sv*sd*bc*sc*i*
alias:          pci:v0000168Cd00000024sv*sd*bc*sc*i*
alias:          pci:v0000168Cd00000023sv*sd*bc*sc*i*
depends:        mac80211,led-class,ath,cfg80211
vermagic:       2.6.31-17-generic SMP mod_unload modversions 
parm:           debug:uint
parm:           nohwcrypt:Disable hardware encryption (int)


It's performing quite badly, giving ping-times in the area of 100ms
(when pinging from host x, but around 1ms when pinging to host x), and
frequent delays/pauses in TCP connections.

I tried to run the module with debug=1, and there was something that
looks suspicious to me:

Jan 16 01:21:09 tv kernel: [ 4432.020973] ath9k: NETWORK SLEEP -> AWAKE
Jan 16 01:21:09 tv kernel: [ 4432.026534] ath9k: AWAKE -> NETWORK SLEEP
Jan 16 01:21:09 tv kernel: [ 4432.123358] ath9k: NETWORK SLEEP -> AWAKE


etc etc.. in other words, it seems to oscillate like this at a steady
rate of about 10-20Hz. Is it supposed to be like this, or does it
indicate a problem?

Also, once in a while (every couple of minutes or so), there are bursts
of these:

Jan 16 01:18:09 tv kernel: [ 4252.157169] ath9k: ah->misc_mode 0x4


I'd appreciate any advice on this.

Thanks,
-- 
Frode V. Fjeld