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Initramfs unpacking failed: Decoding failed on dual boot Ubuntu 21.04 with Windows 10

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Mag

I have installed Ubuntu 21.04 (Hirsute Hippo) as dual boot with Windows 10 on Lenovo ThinkBook 15 G3 ACL, AMD RYZEN 7.

I had issues with installing the WiFi on Ubuntu 20.4 so I had to upgrade to Ubuntu 21.04 and it worked properly.

The dual boot was working properly for a while until I could not login to Ubuntu anymore and the boot drops to a (initramfs) prompt/Busybox and shows the following message:

[0.467161] Initramfs unpacking failed: Decoding failed

[0.606896] pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf coun ter.
Gave up waiting for suspend/resume device Gave up waiting for root file system device. Common problems:

  • Boot args (cat /proc/cmdline)
  • Check rootdelay= (did the system wait long enough?)
  • Missing modules (cat /proc/modules; ls /dev)

ALERT! UUID=af050e62-1c5b-4e1a-aec4-abc892c45aaf does 'not exist. Dropping to a shell!

BusyBox v1.30.1 (Ubuntu 1:1.30.1-6ubuntu2.1) built-in shell (ash) Enter 'help' for a list of built-in commands.
(initramfs)

I tried to google the raised problems and try some solutions:

IOMMU issue OR Initramfs unpacking failed but I could not find any of the files mentioned in the solutions using the initramfs command line.

I cannot also login to the recovery mode.

I have important data on Ubuntu drivers and I am afraid to lose them. How to backup them in this case?

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guiverc avatar
cn flag
guiverc
Ubuntu 21.04 (along with all flavors) is *End-of-Life* and thus unsupported on this site (https://askubuntu.com/help/on-topic), and many other Ubuntu sites, unless your question is specific to moving to a supported release of Ubuntu. https://lists.ubuntu.com/archives/ubuntu-announce/2022-January/000276.html https://fridge.ubuntu.com/2022/01/21/ubuntu-21-04-hirsute-hippo-end-of-life-reached-on-january-20-2022/ https://help.ubuntu.com/community/EOLUpgrades *I assume you're using 21.04 as the `busybox` version in your release doesn't match any supported release of Ubuntu*
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guiverc avatar
cn flag
guiverc
The error seems pretty clear to me; `UUID=af050e62-1c5b-4e1a-aec4-abc892c45aaf` no longer exists; so I'd boot *live* media & explore what that partition was for clues; and `fsck` (file-system check) your partition(s). If an issue is discovered on that partition & fixed; you'll likely find you can boot normally next boot; but I'd then backup your system & *release-upgrade* to 21.10 as Ubuntu 21.04 is EOL. If your issue wifi was fixed with 21.04 you likely could have fixed it on 20.04 (there are two kernels stack choices for LTS releases; at 20.04.3 you could have been using 21.04's kernel)
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guiverc avatar
cn flag
guiverc
You can also *upgrade via re-install* which will fix most issues such issues; asking about that for your EOL release is on-topic. I would backup your wanted data first, then boot 21.10 media, select existing partitions (for re-use, no format of any) and it'll replace your EOL release with 21.10 which is *supported*. I'd still explore what's wrong first (see prior comment) as missing partition means a change has occurred on your box; either someone has performed or potential issues (from power outage to failure etc; most of which you should be aware of unless failing hardware so explore).
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