I was building the kernel module with the wrong gcc version. I was using gcc version 4.9 instead of the original gcc-4.8 from Ubuntu LTS Trusty 14.04.5
Sorry for this bug which wasn't one. ** Changed in: bcmwl (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766993 Title: dpkg-reconfigure bcmwl-kernel-source : modprobe: ERROR: could not insert 'wl': Exec format error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1766993/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs