Hi I am running Ubuntu 12.04 and I happened to simply close the lid of my computer (IBM ThinkPad X230) for a while, put it in my bag and took it from one building to another where I switched between wifis. "dmesg" showed the following log and told me to report this issue. Hence the mail.
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[192804.555711] cfg80211: World regulatory domain updated:
[192804.555713] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[192804.555715] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[192804.555718] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[192804.555719] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[192804.555721] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[192804.555723] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[192807.602878] wlan0: authenticate with 10:6f:3f:0c:5f:49
[192807.605579] wlan0: send auth to 10:6f:3f:0c:5f:49 (try 1/3)
[192807.806109] wlan0: send auth to 10:6f:3f:0c:5f:49 (try 2/3)
[192808.009839] wlan0: send auth to 10:6f:3f:0c:5f:49 (try 3/3)
[192808.213576] wlan0: authentication with 10:6f:3f:0c:5f:49 timed out
[192819.626912] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[193006.435559] wlan0: authenticate with 10:6f:3f:0c:60:74
[193006.443247] wlan0: send auth to 10:6f:3f:0c:60:74 (try 1/3)
[193006.445330] wlan0: authenticated
[193006.448631] wlan0: associate with 10:6f:3f:0c:60:74 (try 1/3)
[193006.452103] wlan0: RX AssocResp from 10:6f:3f:0c:60:74 (capab=0x411 status=0 aid=2)
[193006.455113] wlan0: associated
[193006.455685] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[193236.624506] thinkpad_acpi: unknown possible thermal alarm or keyboard event received
[193236.624512] thinkpad_acpi: unhandled HKEY event 0x6040
[193236.624515] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
[193236.625108] thinkpad_acpi: EC reports that Thermal Table has changed
[193236.632445] e1000e 0000:00:19.0: irq 43 for MSI/MSI-X
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