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I have a ThinkPad T520 running Ubuntu 11.10 (AMD64). I am connecting to a Cisco WAP (802.11N) secured with WPA2. At random times (happens up to a few times per hour) I lose connectivity. The network shows as connected, but I cannot access any LAN or WAN resources (cannot ping my gateway either).

The only way to get it working again is to turn off the physical WLAN switch, wait a moment, and then turn it back on (disconnecting / reconnecting and disabling / reenabling via the software menu doesn't work).

Any ideas why this might be occurring and what I can do to fix this issue? Would like to test drive 11.10 for a bit longer, but will have to move back to Windows if I can't get this resolved (as it is impacting productivity).

Thank you in advance.

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closed as too localized by RolandiXor, fossfreedom Jan 4 '13 at 21:08

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Can you provide us with syslog and dmesg logs around the time of the drops –  benwh Feb 16 '12 at 23:05
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It would also be helpful if you could run the command 'lspci' and see if you can determine the chipset of the WLAN adapter. –  Jayson Rowe Feb 20 '12 at 3:18
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This question appears to be abandoned, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. :) –  Seth Dec 28 '12 at 1:36

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