It works fine for me: ubuntu@ubuntu:~$ uname -a Linux ubuntu 4.14.211 #3 SMP Wed Dec 9 00:40:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
I kept the default initramfs.conf w/ COMPRESS=lz4. I started with a defconfig and added what I needed to boot my (EFI-based) VM. ubuntu@ubuntu:~$ sudo file /boot/initrd.img-4.14.211 /boot/initrd.img-4.14.211: LZ4 compressed data (v0.1-v0.9) ** Attachment added: ".config" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907156/+attachment/5442141/+files/.config -- 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/1907156 Title: Unable to run 4.14 stable kernel in 20.04 user space Status in linux package in Ubuntu: Incomplete Status in linux source package in Focal: Incomplete Bug description: Shuah Khan reported in IRC that she starting having problems with 4.14 only of the stable kernel after her upgrade to 20.04. 4.4 and 4.9 work just fine. She followed up with 4.19, 5.4 and 5.9 kernel, with no issue. She suspects the issue is related to compress/decompress initramfs image. She tried all LZO, F2FS config options. She reports that she made sure to have CONFIG_DECOMPRESS_LZ4 and CONFIG_F2FS_FS_LZ4 enabled. She has run into this once when she upgraded to 20.04, which she solved by enabling CONFIG_DECOMPRESS_LZ4 at that time. She is very willing to help debug. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907156/+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
