Apparently the zram module (among others) is no longer there by default on 21.10. It can be installed through the linux-modules-extra-raspi
From the release notes: Various kernel modules have been moved from the linux-modules-raspi package in order to reduce the initramfs size. This results in several applications (most notably Docker, bug 1947601 18) failing due to missing kernel modules. To work around this: sudo apt install linux-modules-extra-raspi Hopefully this helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1947697 Title: no longer works after upgrade to 21.10 (raspberry pi 4) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zram-config/+bug/1947697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
