Urs Beyerle wrote:
> Akemi Yagi wrote:
>> 2009/4/8 Urs Beyerle <[log in to unmask]>:
>>   
>>> Hi,
>>>
>>> I can just confirm that atheros wifi and WPA is broken on 2.6.18-128.1.1.el5
>>> kernel or later at least on one of my systems.
>>>
>>> The "problem" seems to be that Redhat has added ath5k.ko in
>>> 2.6.18-128.1.1.el5 kernel. ath5k.ko was not yet there in 2.6.18-128.el5 and
>>> older kernels.
>>>
>>> At the moment I don't know why it's not working. As far as I see,
>>> wpa_supplicant is not working with ath5k driver. And per default ath5k is
>>> loaded even if madwifi is installed. Or you get even a mix of loaded ath
>>> modules. See
>>>
>>> /sbin/lsmod | grep ath
>>>
>>> However, if I disable/remove ath5k.ko, madwifi is still not working???
>>>     
>> There is a CentOS wiki article on the Atheros AR5007EG card.  I don't
>> know if this is related, but there is some chance that the info on
>> that page might help.
>>
>> http://wiki.centos.org/HowTos/Laptops/WirelessAR5007EG
>>
>> It basically tells you to replace the current madwifi with the newer
>> version (from source), and blacklist ath5k.
>>
>> Akemi
>>   
> 
> Thanks for the link.
> 
> I just tried the latest madwifi snapshot and blacklist ath5k. But I had 
> no success :-(
> 
> So I started from scratch.
> 
> Since ath5k driver should make madwifi obsolete and it's now in the RHEL 
> kernel, I removed all madwifi related RPMs from my SL53 system.
> 
> Disabled wpa_supplicant with "chkconfig wpa_supplicant off" - 
> NetworkManager will start wpa_supplicant.
> 
> Afterwards I configure the wireless network adapter with 
> "system-config-network" by removing the old wireless adapter entry and I 
> add a new wireless device (wlan0). This should create a file 
> /etc/sysconfig/network-scripts/ifcfg-wlan0
> TYPE=Wireless
> DEVICE=wlan0
> HWADDR=
> BOOTPROTO=dhcp
> NETMASK=
> DHCP_HOSTNAME=
> IPADDR=
> ....
> 
> And I had to manually correct /etc/modprobe.conf by adding the line
> 
> alias wlan0 ath5k
> 
> remove "alias wlan0 ath_pci"
> 
> Reboot and now I can connect to my WPA WLAN access point again! :-)
> 
> There is one drawback, if I shutdown/stop NetworkManager I get a kernel 
> panic :-(
> 
> Nevertheless I hope in case ath5k works nicely, madwifi on SL5 will be 
> obsolete.
> 
>     Urs

Hi All,
Sorry for joining the thread late, but I had to double check that my home 
computer was on the latest kernel.
For me, the madwifi is working better with the update.  But I am not using 
NetworkManager, since this is a home computer and not a laptop.

# lspci
...
01:06.0 Ethernet controller: Atheros Communications Inc. AR2413 802.11bg NIC 
(rev 01)

# cat /etc/modprobe.conf
...
alias wifi0 ath_pci
...
alias eth1 ath_pci

# lsmod | grep ath
...
ath_pci                88740  0
wlan                  181776  1 ath_pci
ath_hal               195408  1 ath_pci
ath5k                  97001  0
mac80211              137801  1 ath5k
cfg80211               30793  2 ath5k,mac80211
...

# cat ifcfg-wifi0
# Atheros Communications Inc. AR2413 802.11bg NIC
DEVICE=wifi0
ONBOOT=yes
BOOTPROTO=dhcp
HWADDR=????
TYPE=Wireless
ESSID=????
DHCP_HOSTNAME=dragon
MODE=Managed
USERCTL=yes
IPV6INIT=no
PEERDNS=yes

# rpm -q madwifi kernel-module-madwifi-`uname -r`
madwifi-0.9.4-15.i686
kernel-module-madwifi-2.6.18-128.1.6.el5-0.9.4-15.sl5.i686
kernel-module-madwifi-hal-2.6.18-128.1.6.el5-0.9.4-15.sl5.i686

So, in the end, I *think* I'm using the madwifi kernel module, but I also have 
the ath5k loaded as well.  But all my configuration files are pointing at the 
madwifi stuff.

Don't know if this helps the discussion or not.  But that is how I've got 
things setup.  At some point I'll have to install SL 5.3 without the madwifi 
and see what happens.
Troy
-- 
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Troy Dawson  [log in to unmask]  (630)840-6468
Fermilab  ComputingDivision/LCSI/CSI LMSS Group
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