I can confirm this bug. I seem to have the same situation as
Christiansen on my Thinkpad T61. madwifi (ath_pci) worked for me over
the past several Ubuntu cycles but ath5k never did (this has been the
case at least since Hardy). I just upgraded to Karmic, which has no
madwifi. ath5k behaves as in previous releases. I can specify an essid
and scan for available networks, but dhclient fails to retrieve an IP
for my network (see iwconfig example below). I have also tried
connecting to my router with Network manager and WiCd, but had similar
disapointing experiences with those when using ath5k (can see available
networks but cannot connect). Wired connections work fine however.
Thanks for all the hard work you developers are putting into making
Ubuntu better!
$ sudo lspci | grep Atheros
03:00.0 Ethernet controller: Atheros Communications Inc. AR5212 802.11abg NIC
(rev 01)
$ uname -a
Linux brain2 2.6.31-11-generic #36-Ubuntu SMP Fri Sep 25 06:37:51 UTC 2009 i686
GNU/Linux
$ sudo iwconfig ath0 essid xxxxx
$ sudo iwconfig ath0
ath0 IEEE 802.11abg ESSID:"xxxxx"
Mode:Managed Frequency:2.437 GHz Access Point: XX:XX:XX:XX:XX:XX
Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
u...@computer:~$ sudo iwlist ath0 scan
.
. ... produces a list of available networks ....
.
$ sudo dhclient ath0
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Listening on LPF/ath0/00:1e:4c:30:9c:7b
Sending on LPF/ath0/00:1e:4c:30:9c:7b
Sending on Socket/fallback
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 18
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 8
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
--
[intrepid] [Atheros AR5211] ath5k driver inoperative, wpa_supplicant never
completes connection
https://bugs.launchpad.net/bugs/276508
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