Please check if 4.8 supports the feature you want: $ sudo apt install linux-generic-hwe-16.04
or 4.10 supports it: $ sudo apt install linux-generic-hwe-16.04-edge If both of them do not have 5 GHz you want, check mainline linux kernel. http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12-rc3/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1528005 Title: 10ec:8821 rtl8821ae has no connectivity in 5GHz networks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1528005/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs