[4965ABGN] Numerous wlan error messages in dmesg log after latest network-manager update

[Michael Marley]

Binary package hint: network-manager

After the latest update of network-manager on Kubuntu Jaunty, I get a this message:

[ 9956.529859] wlan0: beacon loss from AP 0000000000000000 - sending probe request

repeated numerous times, about 100 seconds apart, in the dmesg. The same message appears in the syslog. The message only appears when I am connected to my network using wireless. I have not had a chance to test it on another network (and will not, for several days) but I have never seen this message before this update. When the message appears, the wireless connection does not drop, reduce in performance, have a lag spike, or any other noticeable problem. My wireless card is the Intel WiFi Link 4965ABGN. If it makes a difference, I am using the drivers from the linux-backports-modules package.

[elephantcrossing (david-schwaerzler)]

same thing happening here, only difference is i'm running ubuntu jaunty.
the message started appearing after installing the linux-backports-modules.
without the linux-backports-modules i get the "MAC is in deep sleep!" message

[Michael Marley (mamarley)]

The same thing happens with the 2.6.29 kernel from the Ubuntu Kernel Team PPA and the latest compat-wireless packages. I am setting this to Confirmed

[Michael Marley (mamarley)]

I should also add that occasionally when the probe mentioned in the dmesg output does not succeed, the connection drops and reconnects immediately.

[Alexander Sack (asac)]

does this also happen without backport modules?

[Michael Marley (mamarley)]

Yes, I also get the errors with the regular driver.

[Michael Marley (mamarley)]

I just installed the latest compat-wireless package, and the problem seems to have gone away on both kernels.

[Michael Marley (mamarley)]

Never mind, its back.

[idyllic (idyllic)]

Same problem here with 3945 card as well. Jaunty 9.04 RC

"wlan0: beacon loss from AP f66e76b8 - sending probe request"

[Michael Marley (mamarley)]

And, I have noticed that occasionally, when the router does not respond to the probe, the connection drops and reconnecis.

[Michael Marley (mamarley)]

This is not an issue in network-manager, but in the mac80211 stack. It has been fixed already in the latest kernel in Karmic.

[HaZeX (kiv00)]

I have a related problem, but with diferent hardware.

Atheros Communications Inc. AR928X Wireless Network Adapter

# lsmod | grep ath9k
   ath9k 311092 0
   lbm_cw_mac80211 259000 1 ath9k *MIchael must be right, the problem is with mac80211 probably.
   led_class 13064 1 ath9k
   lbm_cw_cfg80211 85048 2 ath9k,lbm_cw_mac80211

-->> When i connect to the network using iwconfig instead of networt-manager the problem goes away for me, can anyone else try that?
I open a bug about this some days ago, you can find it here :
 https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/373680