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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1767603 Title: BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel Status in linux package in Ubuntu: Confirmed Bug description: I can confirm the following bug in kernel version 4.15 in bionic, https://bugzilla.kernel.org/show_bug.cgi?id=199035 I have thus booted into 4.13, and temporarily worked around the bug. If you need any further information please tell me. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767603/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp