** Description changed: + SRU Justification + + Impact: CONFIG_RT_GROUP_SCHED was enabled in focal, except for the + lowlatency kernel since we expected most RT users to use that kernel. + However we are getting RT regressions with the generic kernel. Digging + deeper into this option, it seems to be pretty specialized and to + require quite a bit of workload-specific configuration/tuning to be + useful, so it doesn't really seem to make sense for a general-purpose + kernel. + + Fix: Turn this option back off. + + Test Case: See comment #4. + + Regression Potential: This was turned on to support some docker + functionality, so this functionality will no longer be available. We've + had this option off for all releases prior to focal, so this seems + acceptable. + + --- + These errors started right after upgrading to 20.04. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: rtkit 0.12-4 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Apr 28 10:31:43 2020 InstallationDate: Installed on 2019-06-18 (315 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) ProcEnviron: - TERM=tmux-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=tmux-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash SourcePackage: rtkit UpgradeStatus: Upgraded to focal on 2020-04-21 (6 days ago)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875665 Title: rtkit-daemon[*]: Failed to make ourselves RT: Operation not permitted after upgrade to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875665/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
