SUSE Support

Here When You Need Us

ctrl-alt-del activity set to reboot on s390 does not reboot

This document (7016964) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12

Situation

On s390x the command 'SIGNAL SHUTDOWN' from zVM produces the equivalent of a Ctrl-Alt-Del on the console.

In YaST --> Security and Users --> Security Center and Hardening --> Boot Settings the "Interpretation of Ctrl-Alt-Del" can be set to 'ignore', 'reboot' or 'halt'.

When 'reboot is selected on s390x the system doesn't reboot, instead 'SIGNAL SHUTDOWN' results in a clean shutdown.

Resolution

SIGNAL SHUTDOWN is working as designed. When a SHUTDOWN signal is sent it means the z/VM is going down and all guests need to shut themselves down as well or the command can also be issued for an individual guest to shut down.
It was never meant to be used any other way, although in previous versions Ctrl-Alt-Del in /etc/inittab used 'shutdown -r' instead of 'shutdown -h' and rebooted instead.

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7016964
  • Creation Date: 04-Nov-2015
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]suse.com

tick icon

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

tick icon

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.

tick icon

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.