I've seen this happen a few times on a different server now (same tmux/byobu/Ubuntu versions).
Not sure if this is related, but I've also noticed tmux segfault on both servers: 2024-11-05T19:34:30.292136+08:00 yarn-labs kernel: tmux: server[2678]: segfault at 10 ip 0000636234db7be5 sp 00007ffc6f8e3200 error 4 in tmux[636234d45000+af000] likely on CPU 0 (core 0, socket 0) 2024-11-05T19:34:30.293552+08:00 yarn-labs kernel: Code: 00 00 00 00 00 4d 8b be f8 09 00 00 4d 85 ff 0f 84 1c 05 00 00 49 8b 97 d8 00 00 00 49 8b 86 d0 08 00 00 49 8d 9e 38 01 00 00 <4c> 8b 62 10 a9 40 20 00 00 0f 85 0f 03 00 00 a8 10 0f 84 ae 18 00 ** Changed in: tmux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2086229 Title: systemd couldn't move process to requested cgroup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tmux/+bug/2086229/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs