My ThinkPad laptop failed to go to sleep or suspend with a fresh install of openSUSE Leap 15.6 (SUSE Linux Enterprise 15). sudo dmesg and sudo journalctl -rb contained a generic error message:
Failed to put system to sleep. System resumed again: Input/output error
This is how I resolved the issue:
echo ‘add_dracutmodules+=” resume “‘ | sudo tee -a /etc/dracut.conf.d/resume.conf
sudo chmod a-x /usr/lib/systemd/systemd-hibernate-resume
sudo dracut –kver $(uname -r) –force
Rebooted and tested with sudo systemctl sleep and sudo systemctl suspend
I will file a bug against yast2 version 4.6.8 release 150600.1.1 on x86_64.
Solution based on: https://www.suse.com/support/kb/doc/?id=000020287
My Certification Journey 