------- Comment From [email protected] 2026-07-07 06:34 EDT------- (In reply to comment #22) > This bug is awaiting verification that the linux/7.0.0-28.28 kernel in > -proposed solves the problem. Please test the kernel and update this bug > with the results. If the problem is solved, change the tag > 'verification-needed-resolute-linux' to 'verification-done-resolute-linux'. > If the problem still exists, change the tag > 'verification-needed-resolute-linux' to 'verification-failed-resolute-linux'. > > If verification is not done by 5 working days from today, this fix will be > dropped from the source code, and this bug will be closed. > > See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to > enable and use -proposed. Thank you!
I can verify that the issue is no longer present on 7.0.0-28 kernel I installed from the "-proposed" releases. $ uname -a Linux localhost 7.0.0-28-generic #28~24.04.1-Ubuntu SMP PREEMPT Wed Jul 1 16:14:51 UTC 2026 s390x GNU/Linux Config file that came with it does not have GENERIC_LOCKBREAK either. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2154748 Title: [Ubuntu 26.04] Severe Performance Degradation on kernel 7.0.0-15 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/2154748/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
