I had a similar problem, I solved it by blacklisting acer-wmi and updating the kernel to hwe.
https://askubuntu.com/questions/791785/qualcomm-atheros-bluetooth-4-0 -not-working-on-ubuntu-16-04/964350#964350 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1532267 Title: 168c:0036 [Aspire E5-573G] Bluetooth not recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1532267/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
