Getting Deep Sleep Working
- The instructions in this post will not work because adding kernel arguments on Fedora Silverblue involves using rpm-ostree. See this wiki.
- To enable deep sleep, run the following command in terminal and then reboot.
sudo rpm-ostree kargs --append='mem_sleep_default=deep'
systemctl reboot
Then confirm that deep sleep is now enabled by running
cat /sys/power/mem_sleep
s2idle [deep]
Thanks
Timothée Ravier for helping me with this on the Fedora Forum.