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Thread: Hibernate for 19.04 and 19.10

  1. #1
    Join Date
    Jun 2019
    Lubuntu 20.04 Focal Fossa

    Hibernate for 19.04 and 19.10

    Getting Hibernate working on Ubuntu is hairy, but absolutely doable. Here's the recipe:

    First, forget making a "swap file", it won't work. You really need a swap partition [There are other opinions, but this is my experience]

    Here's the way to do it successfully:

    1: repartition your HDD/SSD to make a swap partition that's as large or larger than your RAM. In my case it's /dev/sda2

    2: make a swap partition using sudo mkswap /dev/sda2

    3: execute sudo swapon /dev/sda2

    4: verify the partition with sudo lsblk and sudo blkid and copy the UUID of /dev/sda2

    5: configure initramfs by creating (or editing) /etc/initramfs-tools/conf.d/resume to contain the following line: RESUME=UUID=yourswapUUID

    6: modify /etc/default/grub by adding resume=UUID=yourswapUUID within the quotes in GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ..."

    7: check that the /etc/fstab file contains UUID=yourswapUUID none swap defaults 0 0 if not, create the line

    8: execute sudo update-grub

    10: reboot

    9: update policies by creating (or editing) /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla with the following content:

     [Re-enable hibernate by default in upower]
     [Re-enable hibernate by default in logind]
    10: edit /etc/default/grub and add this line: GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT

    11: execute sudo update-grub

    12: reboot

    13: On many PCs, XSreenSaver is the default screensaver and causes trouble when hibernating. Disable "Power Management Enabled" under the "Advanced" Tab in XScreenSaver.

    14: for CLI Hibernate, you'll need to install: sudo apt-install hibernate. Then sudo hibernate will work.

    Hibernate is now set up and enabled, if you want to use the Lid switch it just needs to be set as such [eg, Preferences -> LXQt Settings -> Power Management]. Enjoy
    Last edited by ml9104; April 13th, 2020 at 08:00 PM.


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