How to disable zram at boot

Question

How to disable zram at boot?

What I found was mostly to

swapoff -a
rmmod zram

but after reboot it came back

I found such question being asked at different places, e.g.,

• https://forum.garudalinux.org/t/disable-zram/1580/5
• https://github.com/VR-25/zram-swap-manager/issues/2
• https://forum.xda-developers.com/t/how-to-disable-zram-permanently-at-boot.2946997/
• https://www.reddit.com/r/LineageOS/comments/5v1xwl/how_to_disable_zram/

But none seems to be able to get answered properly.

Answer 1

On Arch Linux-based systems, it is possible that zram is configured via zram-generator package. The generator is invoked by systemd early at boot. You can check unit status of your configuration service via systemd-zram-setup@zramN.service. N is the zram device id. To disable generator, set systemd.zram[=0|1] kernel parameter.

sudo nano /etc/default/grub

Then add systemd.zram=0 argument to GRUB_CMDLINE_LINUX_DEFAULT as follows.

GRUB_CMDLINE_LINUX_DEFAULT="systemd.zram=0"

Then generate grub config file

sudo grub-mkconfig -o /boot/grub/grub.cfg