This is still a problem for some users:
HW:
description: Notebook
product: HP Pavilion dv7 Notebook PC
vendor: Hewlett-Packard
version: 1
serial: xxxxxxxxxx
width: 64 bits
capabilities: smbios-2.4 dmi-2.4 vsyscall64 vsyscall32
~$ uname -a
2.6.28-11-generic #39-Ubuntu SMP Thu Apr 2 04:39:54 UTC 2009 x86_64 GNU/Linux
~$ dmesg | grep ath5k
[ 15.231457] ath5k_pci 0000:09:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ
18
[ 15.231470] ath5k_pci 0000:09:00.0: setting latency timer to 64
[ 15.231558] ath5k_pci 0000:09:00.0: registered as 'phy0'
[ 15.372371] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[ 30.535823] ath5k phy0: gain calibration timeout (2412MHz)
[ 30.535827] ath5k phy0: can't reset hardware (-11)
[ 30.907197] ath5k phy0: gain calibration timeout (2412MHz)
[ 30.907202] ath5k phy0: can't reset hardware (-11)
~$ sudo lshw
*-network DISABLED
description: Wireless interface
product: AR242x 802.11abg Wireless PCI Express Adapter
vendor: Atheros Communications Inc.
physical id: 0
bus info: p...@0000:09:00.0
logical name: wmaster0
version: 01
serial: xx:xx:xx:xx:xx:xx
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list logical ethernet
physical wireless
configuration: broadcast=yes driver=ath5k_pci latency=0 module=ath5k
multicast=yes wireless=IEEE 802.11bg
~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=0 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
This used to work aprox one week ago but I am doing upgrades every day and it
just broke.
It could very well been with one kernel upgrade.
My router is setup using WPA2 and works with my other Ubuntu 8.10 i686
installation on same machine.
--
[iwlagn] networkmanager applet cannot connect to WPA2 home network (intel 4965)
https://bugs.launchpad.net/bugs/348275
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