I got the exact same problem and can confirm the bug. My Laptop is a Samsung R560 and my Wifi worked better from the Live DVD but after install it disconnects randomly. I can also confirm that it doesnt seem to be a network manager Bug, because it also acurs when i use "wicd" or something else.
And i definately did not put in the wrong WPA2 Passphrase. Networkmanager thinks the Passphrase is wrong because the bug is deeper in some kernel module i guess... here some of my dmesg info from pulling the cable going wifi till disconnect and inserting cable again. I allready deactivated ipv6 cause my router doesnt support it anyway as far as i know. [ 4588.213750] sky2 0000:06:00.0: eth0: Link is down [ 4592.486490] iwlagn 0000:02:00.0: Aggregation not enabled for tid 0 because load = 1 [ 4597.941342] iwlagn 0000:02:00.0: Aggregation not enabled for tid 0 because load = 7 [ 4615.892225] iwlagn 0000:02:00.0: iwlagn_tx_agg_start on ra = 00:23:08:d9:ea:e4 tid = 0 [ 4639.824166] iwlagn 0000:02:00.0: Stopping AGG while state not ON or starting [ 4639.862173] cfg80211: All devices are disconnected, going to restore regulatory settings [ 4639.862187] cfg80211: Restoring regulatory settings [ 4639.862196] cfg80211: Calling CRDA to update world regulatory domain [ 4639.870784] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain [ 4639.870795] cfg80211: World regulatory domain updated: [ 4639.870799] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 4639.870807] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 4639.870815] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 4639.870822] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 4639.870829] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 4639.870835] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 4654.593928] sky2 0000:06:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control both -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/842007 Title: Intel Wifi 5100 not working on Oneiric and Kernel 3.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/842007/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
