** 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 Touch seeded packages, which is subscribed to rtkit in Ubuntu. https://bugs.launchpad.net/bugs/1875665 Title: rtkit-daemon[*]: Failed to make ourselves RT: Operation not permitted after upgrade to 20.04 Status in linux package in Ubuntu: Confirmed Status in rtkit package in Ubuntu: Confirmed Status in linux source package in Focal: Confirmed Status in rtkit source package in Focal: New Bug description: 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 SourcePackage: rtkit UpgradeStatus: Upgraded to focal on 2020-04-21 (6 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875665/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
