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Re: NetworkManager and Madwifi connection loss

Walter,
when you say you see no such issues are you using the -Dmadwifi or -Dwext with wpa_supplicant.
I have my Network Manager patched so it waits 60 seconds before deciding the link has timed out, however every 15-30 seconds wpa_supplicant scans, this I see using the -Dmadwifi driver. With -Dwext it is rock solid on my home wpa2 network. However at work -Dmadwifi is needed for leap/eap since -Dwext is unreliable for this type of connection.
When you connect can you run "watch -n1 wpa_cli status" and see if it keeps dropping and scanning. I am kind of curious since I would love a solution/workaround for the scanning ...rescanning etc. 

Walter Neumann wrote:

I have no such problem with madwifi-ng-r2594-20070719.

On Tue, 27 Nov 2007, Darren Albers wrote:




On Tue, 2007-11-27 at 12:18 -0500, Philip A. Culver wrote:

Hi,



I am using NetworkManager 0.6.5 on Fedora 7 with the madwifi 0.9.3.3
drivers.    I am experiencing an issue where NetworkManager thinks
that the link has time out and shuts down the connection.  It then
tries to reconnect, which fails.  At this point the device is
deactivated.  If I restart NetworkManager it usually reconnects
immediately.


My questions are as follows:



* Is this a known issue with madwifi?  If so does anyone know of any
fixes for this?


I have had similar issues with Athero's based cards and MadWifi.   This
was the sole reason I selected a T61 over a Macbook this year.
I /think/ the reason for the disconnect is that Madwifi reports it's
signal strength differently than most other cards and therefore reports
significantly lower strength than other cards.   So in one room of my
house if I am using an Intel 2200 B/G MiniPCI card I have 3 bars and a
stable connection, if I am using an IBM branded Atheros A/B/G MiniPCI
card I show one bar and get disconnected frequently.   There was a hack
posted by Robert Love almost two years ago that "Translated" (If that is
the right way to describe it) the Madwifi signal reporting into a rough
approximation of what most cards use.  This helped make the cards more
usable but still not enough to compare with other cards.

I have been watching Ath5k development and I hope it will resolve these
issues since the author's won't be tied into working with a closed HAL.
In the meantime I would try and steer clear of Atheros based cards if
possible.



* Why is the device deactivated?  Why wouldnÿÿt the device try to
reconnect again after some period of time?  Will I have to manually
tell NetworkManager to reconnect?

* I also experienced a crash in network manager in the same
situation.


I suspect my problems are perhaps related to madwifi but figured I
would start here based on the crash and the fact that if I restart
NetworkManager the connection is reestablished.



I have included logs for both problems.


Thanks,

Phil



Logs for deactivation and loss of link:

Nov 27 11:22:22 localhost NetworkManager: <info>  DHCP daemon state is
now 3 (renew) for interface ath0
Nov 27 11:22:22 localhost dhclient: bound to 192.168.2.253 -- renewal
in 142 seconds.

Nov 27 11:24:44 localhost dhclient: DHCPREQUEST on ath0 to
192.168.2.55 port 67

Nov 27 11:24:44 localhost dhclient: DHCPACK from 192.168.2.55

Nov 27 11:24:44 localhost NetworkManager: <info>  DHCP daemon state is
now 3 (renew) for interface ath0
Nov 27 11:24:44 localhost dhclient: bound to 192.168.2.253 -- renewal
in 119 seconds.

Nov 27 11:26:35 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 11:26:35 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 11:26:43 localhost dhclient: DHCPREQUEST on ath0 to
192.168.2.55 port 67

Nov 27 11:26:51 localhost last message repeated 2 times

Nov 27 11:26:55 localhost NetworkManager: <info>  ath0: link timed
out.
Nov 27 11:26:55 localhost NetworkManager: <info>  nm-device.c -
nm_device_set_active_link (596) device ath0 link state set to 0
Nov 27 11:26:55 localhost NetworkManager: <info>  SWITCH: found better
connection 'ath0/GEM_RD_TEST' than current connection
'ath0/GEM_RD_TEST'.  same_ssid=1, have_link=0
Nov 27 11:26:55 localhost NetworkManager: <info>  Will activate
connection 'ath0/GEM_RD_TEST'.
Nov 27 11:26:55 localhost NetworkManager: <info>  Device ath0
activation scheduled...
Nov 27 11:26:55 localhost NetworkManager: <info>  Deactivating device
ath0.
Nov 27 11:26:55 localhost dhclient: wifi0: unknown hardware address
type 801

Nov 27 11:26:55 localhost dhclient: wifi0: unknown hardware address
type 801

Nov 27 11:26:55 localhost dhclient: DHCPRELEASE on ath0 to
192.168.2.55 port 67

Nov 27 11:26:56 localhost avahi-daemon[1597]: Withdrawing address
record for 192.168.2.253 on ath0.

Nov 27 11:26:56 localhost avahi-daemon[1597]: Leaving mDNS multicast
group on interface ath0.IPv4 with address 192.168.2.253.

Nov 27 11:26:56 localhost avahi-daemon[1597]: Interface ath0.IPv4 no
longer relevant for mDNS.

Nov 27 11:26:56 localhost avahi-daemon[1597]: Withdrawing address
record for fe80::240:96ff:feb5:68e on ath0.

Nov 27 11:26:56 localhost avahi-daemon[1597]: Leaving mDNS multicast
group on interface ath0.IPv6 with address fe80::240:96ff:feb5:68e.

Nov 27 11:26:56 localhost avahi-daemon[1597]: Interface ath0.IPv6 no
longer relevant for mDNS.

Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
started...
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
Stage 1 of 5 (Device Prepare) scheduled...
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
Stage 1 of 5 (Device Prepare) started...
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
Stage 2 of 5 (Device Configure) scheduled...
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
Stage 1 of 5 (Device Prepare) complete.
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation (ath0)
Stage 2 of 5 (Device Configure) starting...
Nov 27 11:26:56 localhost NetworkManager: <info>  Activation
(ath0/wireless): access point 'GEM_RD_TEST' is encrypted, and a key
exists.  No new key needed.
Nov 27 11:26:56 localhost NetworkManager: <info>  DHCP daemon state is
now 14 (normal exit) for interface ath0
Nov 27 11:26:56 localhost NetworkManager: <info>  DHCP daemon state is
now 11 (unknown) for interface ath0
Nov 27 11:26:56 localhost NetworkManager: <info>  DHCP daemon state is
now 14 (normal exit) for interface ath0
Nov 27 11:26:57 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'INTERFACE_ADD ath0              wext    /var/run/wpa_supplicant '
Nov 27 11:26:57 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 11:26:57 localhost kernel: [57694.879957] ADDRCONF(NETDEV_UP):
ath0: link is not ready

Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'AP_SCAN 1'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'ADD_NETWORK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'0'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 ssid 47454d5f52445f54455354'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 proto WPA'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 key_mgmt WPA-EAP'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 eap PEAP'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 identity "pculver"'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 password <password>'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 anonymous_identity "pculver"'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 pairwise TKIP'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'SET_NETWORK 0 group TKIP'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: sending command
'ENABLE_NETWORK 0'
Nov 27 11:26:57 localhost NetworkManager: <info>  SUP: response was
'OK'
Nov 27 11:26:57 localhost NetworkManager: <info>  Activation (ath0)
Stage 2 of 5 (Device Configure) complete.
Nov 27 11:27:11 localhost NetworkManager: <info>  Old device 'ath0'
activating, won't change.
Nov 27 11:27:46 localhost last message repeated 2 times

Nov 27 11:28:41 localhost last message repeated 3 times

Nov 27 11:28:57 localhost NetworkManager: <info>  Activation
(ath0/wireless): association took too long (>120s), failing
activation.
Nov 27 11:28:57 localhost NetworkManager: <info>  Activation (ath0)
failure scheduled...
Nov 27 11:28:57 localhost NetworkManager: <info>  Activation (ath0)
failed for access point (GEM_RD_TEST)
Nov 27 11:28:57 localhost NetworkManager: <info>  Activation (ath0)
failed.
Nov 27 11:28:57 localhost NetworkManager: <info>  Deactivating device
ath0.
Nov 27 11:28:58 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 11:28:58 localhost kernel: [57816.366814] ADDRCONF(NETDEV_UP):
ath0: link is not ready

Nov 27 11:28:58 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0




Backtrace logs

Nov 27 05:39:48 localhost NetworkManager: <info>  Activation (ath0)
Stage 2 of 5 (Device Configure) complete.
Nov 27 05:40:01 localhost NetworkManager: <info>  Old device 'ath0'
activating, won't change.
Nov 27 05:40:37 localhost last message repeated 2 times

Nov 27 05:41:31 localhost last message repeated 3 times

Nov 27 05:41:47 localhost NetworkManager: <info>  Activation
(ath0/wireless): association took too long (>120s), failing
activation.
Nov 27 05:41:47 localhost NetworkManager: <info>  Activation (ath0)
failure scheduled...
Nov 27 05:41:48 localhost NetworkManager: <info>  Activation (ath0)
failed for access point (GEM_RD_TEST)
Nov 27 05:41:48 localhost NetworkManager: <info>  Activation (ath0)
failed.
Nov 27 05:41:48 localhost NetworkManager: <info>  Deactivating device
ath0.
Nov 27 05:41:49 localhost NetworkManager: <info>  nm-netlink-monitor.c
- nm_netlink_monitor_event_handler (724) netlink reports device ath0
link now 0
Nov 27 05:41:50 localhost NetworkManager: <WARN>  nm_signal_handler():
Caught signal 11.  Generating backtrace...
Nov 27 05:41:50 localhost NetworkManager: ******************* START
**********************************

Nov 27 05:41:50 localhost NetworkManager: Frame 0: NetworkManager
[0x806d235]

Nov 27 05:41:50 localhost NetworkManager: Frame 1: NetworkManager
[0x806d3e1]

Nov 27 05:41:50 localhost NetworkManager: Frame 2: [0x12d420]

Nov 27 05:41:50 localhost NetworkManager: Frame 3:
NetworkManager(wpa_ctrl_request+0xb0) [0x80733b0]

Nov 27 05:41:50 localhost NetworkManager: Frame 4:
NetworkManager(nm_utils_supplicant_request_with_check+0xda)
[0x806acea]

Nov 27 05:41:50 localhost NetworkManager: Frame 5: NetworkManager
[0x805be79]

Nov 27 05:41:50 localhost NetworkManager: Frame
6: /lib/libglib-2.0.so.0 [0x252dc6]

Nov 27 05:41:50 localhost NetworkManager: Frame
7: /lib/libglib-2.0.so.0(g_main_context_dispatch+0x182) [0x2527f2]

Nov 27 05:41:50 localhost NetworkManager: Frame
8: /lib/libglib-2.0.so.0 [0x2557cf]

Nov 27 05:41:50 localhost NetworkManager: Frame
9: /lib/libglib-2.0.so.0(g_main_loop_run+0x1a9) [0x255b79]

Nov 27 05:41:50 localhost NetworkManager: Frame 10: NetworkManager
[0x80568de]

Nov 27 05:41:50 localhost NetworkManager: Frame
11: /lib/libglib-2.0.so.0 [0x27066f]

Nov 27 05:41:50 localhost NetworkManager: Frame
12: /lib/libpthread.so.0 [0x32444b]

Nov 27 05:41:50 localhost NetworkManager: Frame
13: /lib/libc.so.6(clone+0x5e) [0x40780e]

Nov 27 05:41:50 localhost NetworkManager: ******************* END
**********************************


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