PC reboots instead of going to sleep/hibernating

Ask Fedora
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[Cross-post from my post on the Unix StackExchange website.]

I have a laptop running Nobara Linux 42 (kernel version 6.17.7-200.nobaba.fc42.x86_64) with KDE/Plasma Desktop Edition (version 6.5.2) and Wayland. My processor is an Intel i7, and I have an Nvidia GPU. I cannot, for the life of me, make my Laptop go to sleep.

My power settings for battery mode (which I’ll presume the laptop is on, for the discussion) in KDE/Plasma’s settings, using powerdevil, are:

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This means that the laptop should go to sleep (i.e. suspend) after five minutes and hibernate (i.e. hibernate) later, meaning it should enter suspend-then-hibernate mode. Note that the laptop does indeed dim and turn off the screen properly. My /etc/systemd/sleep.conf file is:

[Sleep]
AllowSuspend=yes
AllowHibernation=yes
AllowSuspendThenHibernate=yes
AllowHybridSleep=no
SuspendState=mem freeze
HibernateMode=platform shutdown
MemorySleepMode=deep
HibernateDelaySec=15min
HibernateOnACPower=no

and the outputs of cat /sys/power/ state\disk\mem_sleep are:

state: freeze mem disk
disk: [platform] shutdown reboot suspend test_resume
mem_sleep: s2idle [deep]

However, when using the keyboard shortcut (fn+f11), the power button menu (power key → sleep), the start menu (win key → sleep), or waiting for about ten minutes, the system hard reboots (turns off in less than a second without asking for confirmation and then turns back on again to the bootloader password screen); and when hibernating via the power button menu or the start menu, it hibernates (takes time to “hibernate”) and then hard reboots.

I have checked journalctl -b-1 and haven’t seen any errors, crashes, kernel panics, or anything wrong in general (but maybe I didn’t know to look for something), and I tried checking cat /proc/acpi/wakeup to see if I can disable/enable some devices which wake my system up, but I didn’t succeed. When using the command sudo systemctl suspend the issue remains.

I would really appreciate help with this issue. I’ve scoured the web, read the man page of systemd-sleep, etc. Thank you ahead of time.

1 Like
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Note that this is “Ask Fedora” and is focused on fedora.
Nobara is a discrete distro that is based on fedora yet is noticeably different.

Please ask for support on the Nobara site since very few (if any) users here are familiar with the changes nobara has made to the basic fedora release.

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I assumed Nobara was similar enough to Fedora, and upon googling it seems the issue isn’t even isolated to Fedora, so I posted here as well. Thank you for the advice.