Same issue with Ubuntu 12.04 LTS x64, with a hardwired desktop. Happens about 50% of the time on startup, but I have actually recently noticed that it might be fine at startup, but appear hours later as well....Created a thread on it on ubuntuforums.org for those interested (http://ubuntuforums.org/showthread.php?p=12278500).
Every time I see it, I go to my terminal and "sudo service network-manager restart" and it fixes it....
Linux damir-ubuntu 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Same issue with Ubuntu 12.04 LTS x64, with a hardwired desktop. Happens about 50% of the time on startup, but I have actually recently noticed that it might be fine at startup, but appear hours later as well....Created a thread on it on ubuntuforums.org for those interested (http:// ubuntuforums. org/showthread. php?p=12278500).
Every time I see it, I go to my terminal and "sudo service network-manager restart" and it fixes it....
Linux damir-ubuntu 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux