It seems the kernel version Linux deepthought 4.17.0-041700rc3-generic #201804300800 SMP Mon Apr 30 08:03:00 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
solves the issue, normal cpu usage with bluetooth turned on and device connected, as identified in the below screenshots. ** Attachment added: "Screenshot at 2018-05-05 11-19-28.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767603/+attachment/5134286/+files/Screenshot%20at%202018-05-05%2011-19-28.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767603 Title: BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767603/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs