Public bug reported: I had the grub "error: out of memory" issue after upgrading Ubuntu to 22.04 from 21.10. I used a Live USB of Ubuntu to chroot into my system and after many trials and failures, I could get past the issue by changing line 36 in /etc/initramfs-tools/initramfs.conf by using a different compression choice
# # COMPRESS: [ gzip | bzip2 | lz4 | lzma | lzop | xz | zstd ] # COMPRESS=zstd However, this was still not a fix as zstd provided a quicker boot previously than any other but was failing now. Yet from there it seemed it was a compression issue. Changed it back to zstd and went to another fix. I further learned that zstd had defaulted to a lower compression value in /usr/sbin/mkinitramfs at 1 instead of 19 in Ubuntu 22.04. I changed line 196 to 19 compression zstd) compress="zstd -q -19 -T0" ;; Instead of zstd) compress="zstd -q -1 -T0" ;; Problem solved from proper chroot and updating grub2 after changing line 196 of /usr/sbin/mkinitramfs for my system. Also made comment to Bug #1842320. ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: grub initramfs jammy zstd -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1970894 Title: Grub2 Error Out of Memory Status in linux package in Ubuntu: Incomplete Bug description: I had the grub "error: out of memory" issue after upgrading Ubuntu to 22.04 from 21.10. I used a Live USB of Ubuntu to chroot into my system and after many trials and failures, I could get past the issue by changing line 36 in /etc/initramfs-tools/initramfs.conf by using a different compression choice # # COMPRESS: [ gzip | bzip2 | lz4 | lzma | lzop | xz | zstd ] # COMPRESS=zstd However, this was still not a fix as zstd provided a quicker boot previously than any other but was failing now. Yet from there it seemed it was a compression issue. Changed it back to zstd and went to another fix. I further learned that zstd had defaulted to a lower compression value in /usr/sbin/mkinitramfs at 1 instead of 19 in Ubuntu 22.04. I changed line 196 to 19 compression zstd) compress="zstd -q -19 -T0" ;; Instead of zstd) compress="zstd -q -1 -T0" ;; Problem solved from proper chroot and updating grub2 after changing line 196 of /usr/sbin/mkinitramfs for my system. Also made comment to Bug #1842320. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970894/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp