I'm having the same problem however I'm using an Atheros ath9 wireless
card. It works for a day and then next day I lose connectivity. The wifi
card continues loaded with a static IP Address assigned to it but I
cannot connect to anything.
I tried to whitelist ath_pci on /etc/modprobe.d/blacklist-ath_pci.conf
but the problem still persists. Also yesterday I enabled the ubuntu
backports on my software sources but so far no kernel updates.
I live in Australia and the domain is correct as far as the syslog
messages are concerned:
tail /var/log/syslog
May 18 08:09:06 ed-linux kernel: [ 4029.970605] cfg80211: Regulatory domain
changed to country: AU
May 18 08:09:06 ed-linux kernel: [ 4029.970607] cfg80211: (start_freq -
end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 18 08:09:06 ed-linux kernel: [ 4029.970611] cfg80211: (2402000 KHz -
2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
May 18 08:09:06 ed-linux kernel: [ 4029.970614] cfg80211: (5170000 KHz -
5250000 KHz @ 40000 KHz), (300 mBi, 2300 mBm)
May 18 08:09:06 ed-linux kernel: [ 4029.970618] cfg80211: (5250000 KHz -
5330000 KHz @ 40000 KHz), (300 mBi, 2300 mBm)
May 18 08:09:06 ed-linux kernel: [ 4029.970622] cfg80211: (5735000 KHz -
5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
May 18 08:09:06 ed-linux wpa_supplicant[1616]: WPA: Key negotiation completed
with 00:24:36:ab:42:a9 [PTK=CCMP GTK=CCMP]
May 18 08:09:06 ed-linux wpa_supplicant[1616]: CTRL-EVENT-CONNECTED -
Connection to 00:24:36:ab:42:a9 completed (reauth) [id=0 id_str=]
May 18 08:09:06 ed-linux NetworkManager[1464]: <info> (wlan0): supplicant
connection state: 4-way handshake -> group handshake
May 18 08:09:06 ed-linux NetworkManager[1464]: <info> (wlan0): supplicant
connection state: group handshake -> completed
lspci -k
05:01.0 Network controller: Atheros Communications Inc. AR5008 Wireless Network
Adapter (rev 01)
Subsystem: D-Link System Inc Device 3a6b
Kernel driver in use: ath9k
Kernel modules: ath9k
uname -a
Linux ed-linux 2.6.38-9-generic #43-Ubuntu SMP Thu Apr 28 15:25:15 UTC 2011
i686 i686 i386 GNU/Linux
cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"
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https://bugs.launchpad.net/bugs/759997
Title:
ath5k card disconnects after a while
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