Hibernating in Fedora 22

Hibernation in Fedora 22 is not enabled by default, only the suspend part is enabled .
Even if you give the following command it just gives a fresh system after resume

systemctl hibernate

One needs to enable it in certain scripts for it to function properly. Following are the steps to enable it

– Enable Recovery from a hibernate in grub bootloader settings file

  - /etc/default/grub

The contents will be as follows

 GRUB_TIMEOUT=5
 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
 GRUB_DEFAULT=saved
 GRUB_DISABLE_SUBMENU=true
 GRUB_TERMINAL_OUTPUT="console"
 GRUB_CMDLINE_LINUX="rhgb quiet"
 GRUB_DISABLE_RECOVERY="true" 

The last line is what matters to us : GRUB_DISABLE_RECOVERY should be set to false. So edit it , replace true to false and it should look like this . If the line is not present , dont worry, just add it

 GRUB_TIMEOUT=5
 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
 GRUB_DEFAULT=saved
 GRUB_DISABLE_SUBMENU=true
 GRUB_TERMINAL_OUTPUT="console"
 GRUB_CMDLINE_LINUX="rhgb quiet"
 GRUB_DISABLE_RECOVERY="false"

– Enable kernel parameters for resume

Enable resume in kernel parameters of grub bootloader so that it resumes from image in the swap partition. So in the following file edit the line for your fedora vmlinuz boot line

  /boot/grub2/grub.cfg

Make sure you edit the proper line by checking the uname command for the kernel version. Mine was 64 bit fedora 22 running kernel 4.0.5-300 , so the following line needs to be edited.

linux16 /boot/vmlinuz-4.0.5-300.fc22.x86_64 root=/dev/sda1 ro rhgb quiet

At the end of the above line add resume=/dev/sda3, assuming ofcourse sda3 is your swap partition

linux16 /boot/vmlinuz-4.0.5-300.fc22.x86_64 root=/dev/sda1 ro rhgb quiet resume=/dev/sda3

Thats it, now reboot the system and hibernate away!! 🙂 let me know in comments any issues you face.

Note: FC-22 mutter package gives some issues once after resume, just update it to version 3.6.3-2