Public bug reported: I am running Ubuntu 18.04 on a lenovo Thinkpad T490s. I enabled full disk encryption when I installed Ubuntu. I found that the computer ran hot and that a process was always running and using 50% of the available CPU, presumably taking one core. That process was
`/usr/bin/perl -w /usr/share/debconf/frontend /usr/sbin/update- secureboot-policy --enroll-key` This process appears to be the same as the one described in this stack exchange post https://superuser.com/questions/1493050/update-secureboot-policy-enroll- key-running-on-every-new-startup-eating-reso I found that, as suggested by user931000 I could disable Secure Boot in UEFI settings to fix the behavior. I am not sure if this poses any security risk however, and find that secure boot has a way of turning itself on, at least with updates that I installed today on 31 January 2020. I think this is a bug and that CPU hogging processes should not run every time out of the box. This issue might be related to this other issue, for which a fix is apparently released, but which doesn't appear to be helping in my case. https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1673817 1) Ubuntu 18.04.4 LTS 2) Don't know the relevant package 3) I expect that Ubuntu should start up and run without a process burning all of the CPU, even if I enable disk encryption, and even if secureboot is enabled. 4) I have to choose between having a CPU hogging process turn on every time, turning off Secure Boot (while continuing to turn it off when updates re-turn off secure boot) and not encrypting my hard drive. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861530 Title: update-secureboot-policy runs at startup and burns CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1861530/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
