since switching to NetworkManager for testing reasons (explained here: viewtopic.php?f=25&t=5782) there are frequent disconnects, without a real reason. Log looks like this:
Sep 24 18:46:09 Mageia3 dbus[976]: [system] Successfully activated service 'org.freedesktop.PackageKit'
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> WiFi now disabled by radio killswitch
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> (wlan0): device state change: activated -> unavailable (reason 'none') [100 20 0]
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> (wlan0): deactivating device (reason 'none') [0]
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 23038
Sep 24 18:47:26 Mageia3 kernel: wlan0: deauthenticating from 9c:c7:a6:44:29:bb by local choice (reason=3)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: Calling CRDA to update world regulatory domain
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> Removing DNS information from /sbin/resolvconf
Sep 24 18:47:26 Mageia3 kernel: cfg80211: World regulatory domain updated:
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: Calling CRDA for country: DE
Sep 24 18:47:26 Mageia3 kernel: cfg80211: Regulatory domain changed to country: DE
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (2400000 KHz - 2483500 KHz @ 40000 KHz), (N/A, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (5150000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (5250000 KHz - 5350000 KHz @ 40000 KHz), (N/A, 2000 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (5470000 KHz - 5725000 KHz @ 40000 KHz), (N/A, 2698 mBm)
Sep 24 18:47:26 Mageia3 kernel: cfg80211: (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm)
Sep 24 18:47:26 Mageia3 NetworkManager[960]: <info> (wlan0): taking down device.
Sep 24 18:47:26 Mageia3 dbus-daemon[976]: dbus[976]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Sep 24 18:47:26 Mageia3 dbus[976]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Sep 24 18:47:26 Mageia3 dbus-daemon[976]: dbus[976]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Sep 24 18:47:26 Mageia3 dbus[976]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Sep 24 18:47:26 Mageia3 mgaapplet[2470]: Checking Network: seems disabled
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> WiFi now enabled by radio killswitch
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0): bringing up device.
Sep 24 18:47:27 Mageia3 kernel: iwlwifi 0000:05:00.0: L1 Enabled; Disabling L0S
Sep 24 18:47:27 Mageia3 kernel: iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
Sep 24 18:47:27 Mageia3 kernel: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0) supports 5 scan SSIDs
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0): supplicant interface state: starting -> ready
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <warn> Trying to remove a non-existant call id.
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0): supplicant interface state: ready -> inactive
Sep 24 18:47:27 Mageia3 NetworkManager[960]: <info> (wlan0) supports 5 scan SSIDs
Adapter is an Intel IWL 5100AGN:
- Code: Select all
[doktor5000@Mageia3 ~]$ lspcidrake -v | grep -i wifi
iwlwifi : Intel Corporation|WiFi Link 5100 [NETWORK_OTHER] (vendor:8086 device:4232 subv:8086 subd:1201)
Sometimes when i get to work or to sleep, when i come back to my box there are up to 20 notifications of network disconnects from knetworkmanager.
This also happens when no applet (nm-applet or knetworkmanager) is running.
Signal strength is always over 85%, distance to the router is only ~3m. Router is a Fritz!Box 7360SL with latest firmware 05.50.
WLAN is configured as recommended (automatic, 802.11n+g+b) and encrpytion is WPA2-CCMP
Weird thing is, with the same configuration I've not encountered any disconnect with net_applet ...

I've already had a look for this, and seems its rather common, but the fixes/workarounds vary greatly, none helped so far:
https://bugs.launchpad.net/ubuntu/+sour ... bug/548992
which includes http://bugzilla.intellinuxwireless.org/ ... gi?id=2305 - intel bugzilla has been taken offline for security issues)
http://azitech.wordpress.com/2010/02/22 ... g-reason3/
https://bbs.archlinux.org/viewtopic.php?id=146052
http://forums.opensuse.org/english/get- ... n-3-a.html
https://bugzilla.redhat.com/show_bug.cgi?id=503983
What I've tried already:
- disable 802.11n via "echo "options iwlwifi 11n_disable=1" >> /etc/modprobe.conf"
- disable power management via sudo iwconfig wlan0 power off (disabled for module iwlwifi by default, but what the heck ...)
- disabled IPv6 via kernel option ipv6.disable=1 and via draknetcenter (adds options ipv6 disable=1 to modprobe.conf) even though i'm not using IPv6, but just to be sure.