*** This bug is a duplicate of bug 429035 ***
https://bugs.launchpad.net/bugs/429035
I can confirm that bug and I think it is not the #429035 bug. #429035
says that wlan random disconnects and connects to a network, but this
bug says that after some time you cannot find any wlan networks and
cannot connect to it. I use an Lenovo X200 and after some time (a lot of
hours and after some suspends) i cannot find any networks, but the wired
connection is working. Networking restart doesn't helped for me, and I
couldn't find any workaround only restarting my computer.
[ 2112.190052] wlan0: no IPv6 routers present
[ 2114.337134] wlan0: authenticate with AP 00:1b:fc:45:2a:1e
[ 2114.338934] wlan0: authenticated
[ 2114.338939] wlan0: associate with AP 00:1b:fc:45:2a:1e
[ 2114.341251] wlan0: RX AssocResp from 00:1b:fc:45:2a:1e (capab=0x411 status=0
aid=2)
[ 2114.341276] wlan0: associated
[ 2116.467747] wlan0: disassociating by local choice (reason=3)
[ 2124.718205] wlan0: authenticate with AP 00:1b:fc:45:2a:1e
[ 2124.720254] wlan0: authenticated
[ 2124.720261] wlan0: associate with AP 00:1b:fc:45:2a:1e
[ 2124.727404] wlan0: RX AssocResp from 00:1b:fc:45:2a:1e (capab=0x411 status=0
aid=2)
[ 2124.727413] wlan0: associated
[ 2126.791155] wlan0: disassociating by local choice (reason=3)
[ 2135.072581] wlan0: authenticate with AP 00:1b:fc:45:2a:1e
[ 2135.074486] wlan0: authenticated
[ 2135.074491] wlan0: associate with AP 00:1b:fc:45:2a:1e
[ 2135.077275] wlan0: RX AssocResp from 00:1b:fc:45:2a:1e (capab=0x411 status=0
aid=2)
[ 2135.077284] wlan0: associated
[ 2137.159718] wlan0: disassociating by local choice (reason=3)
[ 2145.360922] wlan0: authenticate with AP 00:1b:fc:45:2a:1e
[ 2145.362825] wlan0: authenticated
[ 2145.362832] wlan0: associate with AP 00:1b:fc:45:2a:1e
[ 2145.365183] wlan0: RX AssocResp from 00:1b:fc:45:2a:1e (capab=0x411 status=0
aid=2)
[ 2145.365190] wlan0: associated
[ 2147.431127] wlan0: disassociating by local choice (reason=3)
[ 2465.986434] Registered led device: iwl-phy0::radio
[ 2465.986482] Registered led device: iwl-phy0::assoc
[ 2465.986522] Registered led device: iwl-phy0::RX
[ 2465.986564] Registered led device: iwl-phy0::TX
[ 2466.032921] ADDRCONF(NETDEV_UP): wlan0: link is not ready
--
when wireless connection is lost netbook must be restarted
https://bugs.launchpad.net/bugs/448469
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