I am having the exact same problem on my Dell600m. When I upgraded to the new kernel 3.2.0-29, the signal strength applet shows zero (completely dimmed out) when it usually shows 3 out of 4 lines bright on my home network. Booting to the previous kernel 3.2.0-27 fixes the problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1035590 Title: Kernel update on 10 Aug 2012 affects nm-applet signal strength To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1035590/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs