Had the same problem several months on my Lenovo G500 with BCM43142 looking for solutions but nothing. This week read a solution on another thread (https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1405074), gave it a try and it worked.
I downloaded the binaries for 6.30.223.271 (from http://www.broadcom.com/support/802.11), uninstalled my current driver, installed the new one (follow the readme https://www.broadcom.com/docs/linux_sta/README.txt) and it stopped the unstable wifi and disconnections. I hope it will continue like this, 3 days have passed and everything is still okay. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1454717 Title: Weak wifi signal and frequency disconnects To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1454717/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
