Ubuntu 21.04 on the Framework Laptop

Framework Laptop 13 Linux
8

To enable deep sleep on Ubuntu 21.04 (kernel 5.11)

  1. Find the following line in the /etc/default/grub file:
    GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash"

  2. Change it to:
    GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash mem_sleep_default=deep”

  3. Run sudo update-grub

  4. Reboot
    a. To verify, run the following from the terminal:
    cat /sys/power/mem_sleep
    b. If the output is s2idle [deep] then deep sleep is enabled (note the brackets are on “deep”)

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