Comment 27 for bug 1096294

I rebooted into -39 after it was released. Now my 5Ghz network doesn't seem to want to stay connected at all. I keep getting disconnected:

Mar 21 18:21:11 swm-laptop kernel: [606888.625371] watchdog: only one watchdog can use /dev/watchdog.
Mar 21 18:21:11 swm-laptop kernel: [606888.625377] watchdog: error registering /dev/watchdog (err=-16).
Mar 21 18:21:11 swm-laptop kernel: [606888.625379] mei: unable to register watchdog device.
Mar 21 18:21:14 swm-laptop kernel: [606891.729033] iwlwifi 0000:03:00.0: Tx aggregation enabled on ra = 00:21:91:dc:94:57 ti
d = 0
Mar 21 18:21:16 swm-laptop kernel: [606893.486341] wlan0: deauthenticating from 00:21:91:dc:94:57 by local choice (reason=3)
Mar 21 18:21:16 swm-laptop kernel: [606893.528541] cfg80211: All devices are disconnected, going to restore regulatory settings
Mar 21 18:21:16 swm-laptop kernel: [606893.528548] cfg80211: Restoring regulatory settings

Even booting 3.2.0-34 or 3.8.0 helps, so now I'm restricted to 2.4GHz. I don't know if there was some other change that happened at the same time (network manager) that might be causing this. I tried booting a daily build of raring which had the same behaviour. I'm going to install Windows 7 or windows 8 on a separate harddisk sometime and see if that works ok, to rule out hardware problem.