Just for the record, I have found the problem that caused the lockups. It was the nvidia driver ForceCompositionPipeline parameter in xorg.conf. Without it the hangs no longer happen, but the warnings are still present in the log.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1744379 Title: tcp_fastretrans_alert kernel warnings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1744379/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
