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cgmd
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Joined: 17 Feb 2005
Posts: 1585
Location: Louisiana
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 Posted: Mon Oct 23, 2006 4:35 am Post subject: ath0 won't load: a wpa_supplicant / baselayout problem? |
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Hi, All...
I'm using an IBM ThinkPad T-30 (pcmcia card with atheros chipset and madwifi driver). The same laptop, with a prior install of gentoo, experienced a fatal file system problem, and, now has been reformatted with gentoo being reinsalled. Wireless worked without problem before the laptop file disaster and the subsequent os reinstallation.
My problem is with wpa_supplicant and ath0 which only load some of the time during boot but, usually, requiring manual intervention to get ath0 going. During boot I see one of three different senarios...
First is a rare good restart in which I have a fully operational ath0 at conclusion of boot: | Code: |
* Starting ath0
* Starting wpa_supplicant on ath0 ... [ ok ]
* Starting wpa_cli on ath0 ... [ ok ]
* Backgrounding ...
* Starting eth0 |
Second is the more frequent boot in which ath0 fails: | Code: |
* Starting ath0
* Starting wpa_supplicant on ath0 ... [ ok ]
* Starting wpa_cli on ath0 ... [ ok ]
Failed to connect to wpa_supplicant - wpa_ctrl_open: Address already in use [ !! ] |
The third senario in which ath0 also fails to start looks like this: | Code: |
* Starting ath0 [ ok ]
* Starting wpa_supplicant on ath0 ... [ ok ]
bind(PF_UNIX): Address already in use
* Starting wpa_cli on ath0 ... [ !! ]
Failed to connect to wpa_supplicant - wpa_ctrl_open: Address already in use |
If ath0 has failed, as in these last two senarios, with the wpa_ctrl_open: Address already in use statement, I can run: | Code: |
rm /var/run/wpa_supplicant/ath0 |
...and then I am able to manually start ath0, or, also, even a reboot will allow ath0 to start automatically.
Finally, if I debug wpa_supplicant immediately after I see a failed ath0 start, I get the following output:
| Code: |
# wpa_supplicant -iath0 -c/etc/wpa_supplicant.conf -d
Initializing interface 'ath0' conf '/etc/wpa_supplicant.conf' driver 'default' ctrl_interface 'N/A' bridge 'N/A'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
ctrl_interface_group=10 (from group name 'wheel')
eapol_version=1
ap_scan=1
fast_reauth=1
Priority group 5
id=0 ssid='griswold'
Priority group 0
id=1 ssid=''
Initializing interface (2) 'ath0'
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
SIOCGIWRANGE: WE(compiled)=20 WE(source)=13 enc_capa=0xf
capabilities: key_mgmt 0xf enc 0xf
WEXT: Operstate: linkmode=1, operstate=5
Own MAC address: 00:14:6c:03:cd:da
wpa_driver_hostap_set_wpa: enabled=1
wpa_driver_hostap_set_key: alg=none key_idx=0 set_tx=0 seq_len=0 key_len=0
ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
Failed to set encryption.
wpa_driver_hostap_set_key: alg=none key_idx=1 set_tx=0 seq_len=0 key_len=0
ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
Failed to set encryption.
wpa_driver_hostap_set_key: alg=none key_idx=2 set_tx=0 seq_len=0 key_len=0
ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
Failed to set encryption.
wpa_driver_hostap_set_key: alg=none key_idx=3 set_tx=0 seq_len=0 key_len=0
ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
Failed to set encryption.
wpa_driver_hostap_set_countermeasures: enabled=0
wpa_driver_hostap_set_drop_unencrypted: enabled=1
Setting scan request: 0 sec 100000 usec
Using existing control interface directory.
bind(PF_UNIX): Address already in use
ctrl_iface exists and seems to be in use - cannot override it
Delete '/var/run/wpa_supplicant/ath0' manually if it is not used anymore
Failed to initialize control interface '/var/run/wpa_supplicant'.
You may have another wpa_supplicant process already running or the file was
left by an unclean termination of wpa_supplicant in which case you will need
to manually remove this file before starting wpa_supplicant again.
Failed to add interface ath0
State: DISCONNECTED -> DISCONNECTED
WEXT: Operstate: linkmode=-1, operstate=5
No keys have been configured - skip key clearing
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
wpa_driver_hostap_set_wpa: enabled=0
ioctl[PRISM2_IOCTL_HOSTAPD]: Operation not supported
wpa_driver_hostap_set_drop_unencrypted: enabled=0
wpa_driver_hostap_set_countermeasures: enabled=0
No keys have been configured - skip key clearing
WEXT: Operstate: linkmode=0, operstate=6
Cancelling scan request |
I don't understand the implications of much of this output, but the common theme seems to be well stated in the section: | Code: |
Using existing control interface directory.
bind(PF_UNIX): Address already in use
ctrl_iface exists and seems to be in use - cannot override it
Delete '/var/run/wpa_supplicant/ath0' manually if it is not used anymore
Failed to initialize control interface '/var/run/wpa_supplicant'.
You may have another wpa_supplicant process already running or the file was
left by an unclean termination of wpa_supplicant in which case you will need
to manually remove this file before starting wpa_supplicant again. |
If this is the case, what causes it, and, more importantly, what can I do to fix it? 
I need some expert advice!
Thanks!
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"Primum non nocere" ---Galen
Last edited by cgmd on Wed Oct 25, 2006 12:32 pm; edited 6 times in total |
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darkmason
Tux's lil' helper
Joined: 31 Aug 2003
Posts: 116
Location: London, UK
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| Posted: Mon Oct 23, 2006 12:32 pm Post subject: |
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I have the exact same problem. I can usually make it work if I do a
| Code: | | /etc/init.d/net.ath0 restart |
after logging in, but I'm keen to know the reason why it fails.
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cgmd
Veteran
Joined: 17 Feb 2005
Posts: 1585
Location: Louisiana
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| Posted: Tue Oct 24, 2006 3:36 am Post subject: |
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darkmason wrote: | Quote: | I have the exact same problem. I can usually make it work if I do a | Code: |
/etc/init.d/net.ath0 restart |
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Your problem differs from mine, in as much as you can restart ath0...
For me to restart ath0, I must first do the following removal:
| Code: | | # rm /var/run/wpa_supplicant/ath0 |
...then, and only then, can I start ath0. 
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cgmd
Veteran
Joined: 17 Feb 2005
Posts: 1585
Location: Louisiana
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| Posted: Wed Oct 25, 2006 12:01 am Post subject: |
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I still struggle with this problem, and I don't seem to be gtting anyone's interest...
Perhaps someone can see something problematic in my setup 
This is my /etc/conf.d/net: | Code: |
modules=( "dhcp" "wpa_supplicant" )
# Configuration of wired stuff
config_eth0=( "dhcp" )
dhcpcd_eth0="-t 10"
# Configuration of wireless - Netgear wg511t
config_ath0=( "dhcp" )
dhcpcd_ath0="-t 30"
wpa_supplicant_ath0="-Dmadwifi"
wpa_timeout_ath0=60
preferred_aps_ath0=( "cgmd-home" "cgmd-work" )
config_cgmd-home=( "dhcp" )
config_cgmd-work=( "dhcp" ) |
This is my wpa_supplicant configuration: | Code: |
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
eapol_version=1
ap_scan=1
fast_reauth=1
# Home WLAN: WPA-PSK, PSK as an ASCII passphrase, allow all valid ciphers
network={
proto=WPA
ssid="cgmd-home"
scan_ssid=0
key_mgmt=WPA-PSK
pairwise=TKIP
group=TKIP
psk="passwd"
priority=5
}
# For "any" Open WLAN
network={
ssid=""
key_mgmt=NONE
}
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As stated above, on a good reboot, ath0 works perfectly either @cgmd-home or @cgmd-work. Unfortunately, the good reboots are rare, and I have to then resort to a manual start of ath0, etc.
Please, someone, give me a hand with this!
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"Primum non nocere" ---Galen |
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cgmd
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Joined: 17 Feb 2005
Posts: 1585
Location: Louisiana
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| Posted: Wed Oct 25, 2006 1:17 pm Post subject: |
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I may be on to something...
Re-emerging baselayout: | Code: | emerge -pv baselayout
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild R ] sys-apps/baselayout-1.12.5-r2 USE="unicode -bootstrap -build -static" 0 kB
Total size of downloads: 0 kB
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...seems to clear up the problem. 
[Edit] Not really... It still occurs, albeit with less regularity.
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