Getting the message "[ 0.283078] Initramfs unpacking failed: Decoding failed" when booting ubuntu 20.04 then boots normal

boot kernel bluetooth 20.04 vim

51,463

Solution 1

From the comments...

set back compress=lz4 in /etc/initramfs-tools/initramfs.conf
rebuild your ramdisk with sudo update-initramfs -c -k $(uname -r)
reboot

Note: Use the sudo update-initramfs -c example, not sudo update-initramfs -u variation.

Solution 2

Use compress=gzip instead of lz4. That worked for me. Then follow heynnema sudo update-initramfs -c -k $(uname -r). This should work this time.

51,463

Author by

medskillz

Updated on September 18, 2022

Comments

medskillz over 1 year

Before, I had problems installing the a200 intel wifi/bluetooth driver which I didn't manage to install properly (I had downloaded it but couldnt use it - I didn't get it running). Then I installed instead blueman, dkms etc and got an internal error message. I de installed all that and the internal error message is also gone, but I still get this message when booting.

In the progress, I also edited via vim that "compress gzip" but that didn't help.

I also had entered rtbth in /etc/modules over vim but I am not sure whether I did that correctly.

Nonetheless, I de installed blueman, blueman manager and dkms but I am still left with that error message shown above, that had not been there before I started to fix my bluetooth problems.

Maybe you can help? (BTW, kernel is 5.4)
- Admin almost 4 years
  
  Undo your previous attempts, and do sudo update-initramfs -c -k $(uname -r). Reboot. Report back.
- Admin almost 4 years
  
  hey thank you a lot!! the error message is gone now :). only downside is that my bluetooth completely doesnt work anymore, but I will either try that some time again or will just get an usb cable for the speakers i used to connect via bluetooth.
- Admin almost 4 years
  
  Did you set compress gzip back to default? If not, do so, and redo the update-initramfs command. Also, your edit of /etc/modules with rtbth is probably incorrect, and that's probably why bluetooth doesn't work. What is rtbth? What dkms driver had you tried to install? What bluetooth driver had you tried to install?
- Admin almost 4 years
  
  ok i put compress back to default (compress=lz4) and bluetooth is working now again. I was actually trying this: askubuntu.com/questions/1231074/… sudo apt install blueman sudo add-apt-repository ppa:blaze/rtbth-dkms sudo apt-get update sudo apt-get install rtbth-dkms sudo vim /etc/modules Comment all and add this line rtbth Reboot and open sudo blueman-manager If still not work, try this sudo rmmod btusb sleep 1 sudo modprobe btusb
- Admin almost 4 years
  
  So i actually wanted to install this driver from here (for ax 200) intel.de/content/www/de/de/support/articles/000005511/… - when I am in ubuntu under "software & updates" it says that "Intel Corporation:Wi_fi 6 AX200" wasn't working. Thats why I actually started trying to "fix" my bluetooth (and my bt also wasnt working every time I boot, but it appears to be working well now). But ye, I still found it frustrating that that device is apparently not fully working.
- Admin almost 4 years
  
  I believe that .ucode file is already included in 20.04. Check your /lib/firmware.
- Admin almost 4 years
  
  Status please...
- Admin almost 4 years
  
  Status please...
- Admin almost 4 years
  
  hey, sorry for my late reply and thank you so far. the error message came back after the Software Updater said there would be an update and there was an error while installing through that Updater I think. Everything else is working and under "Software and Updates" it doesnt say anymore that the intel driver wouldnt be working. so its really only that error message apparently not working. I also tried again: "sudo update-initramfs -c -k $(uname -r)" but it didnt make the error while booting disappear. I didnt make new changes otherwise. And in lib/firmware is latest driver for wifi chip now.
- Admin almost 4 years
  
  Right now, I think it might be a 20.04 bug. Ignore it for now. I'll research it some more.
- Admin almost 4 years
  
  hey, sorry I either didnt see it anymore or it was temporily away: it says again that the intel driver isnt working. I had removed the driver that I had moved earlier into lib/firmware as there was a later version showing so I thought that I wouldnt need the old version anymore. I removed it and just later I saw that the driver is shown in "Software and Updates" as not working. So I put it back into lib/firmware but I guess I will just leave everything as it is for now cause bluetooth is working and I think it's really not worth the effort.... But cant say whether it was working or I didnt see
- Admin almost 4 years
  
  @heynnema, what Ubuntu 20.04 bug are you referring to? Is it bugs.launchpad.net/ubuntu/+source/linux/+bug/1835660
- Admin almost 4 years
  
  @ndemarco Yes, that certainly looks like it.
- Admin over 3 years
  
  For those lost souls that got here but are using CentOS, I fixed it by removing the safeboot option in the BIOS and rebooting, I also made sure to disable automatic updates since my machine will run unattended and isolated.
Sqerstet almost 4 years

Here, compress=gzip in /etc/initramfs-tools/initramfs.conf fixed it. Thanks for the lead anyway.
rationalbeing almost 4 years

I have to repeat these steps each time I receive a system update for initramfs.
Boris Hamanov almost 4 years

@rationalbeing Leave it set at lz4 compression. I think the problem/bug has been fixed in recent updates.
rationalbeing almost 4 years

@heynnema The compression has always been lz4, but somehow each time initramfs related update is installed I have to rebuild the ramdisk to get rid of the error.
rationalbeing almost 4 years

Relevant bug report: Bug #1835660
kabadisha almost 4 years

I had to set it to gzip, run sudo update-initramfs -u, then change it back to lz4, run sudo update-initramfs -u one more time, then reboot. Error now gone.
user25406 over 3 years

I am new to linux. How exactly do you get to the directory /etc/initramfs-tools/initramfs.conf, and once there which editor do you use to change compress to lz4? I am using Kubuntu 20.04.1 on a Dell laptop. Please provide as much details as possible. Thanks.
Boris Hamanov over 3 years

@user25406 In terminal, type grep -i compress /etc/initramfs-tools/initramfs.conf and if it returns =lz4, then leave it alone. If you have another problem, please start a new question.
user25406 over 3 years

@heynnema, it did return compress=lz4 but I am having the same error described in the post above. Any suggestion is welcome. thanks.
Boris Hamanov over 3 years

@user25406 Did you do the sudo update-initramfs -c -k $(uname -r) command using the -c option? If Ubuntu boots after you see the message, ignore the message, as it's kind of bogus.
user25406 over 3 years

No, I didn't run the command. I was stuck in the first part (check=lz4). Now I can do the 2nd. Can you please confirm if $uname -r means $(my username) -r? Thanks.
Boris Hamanov over 3 years

@user25406 No, type the command exactly as I have it.
naisanza over 3 years

Did not resolve the crashing issue. Still happens
Boris Hamanov over 3 years

@naisanza Please start a new question for your problem.
nobody over 3 years

How about sudo apt install lz4 and create the initramfs new.
Boris Hamanov over 3 years

@nobody I don't understand your point. lz4 is already there.
nobody over 3 years

Was not on my system
Colin D over 3 years

what is the logic behind this "fixing the problem"?
Boris Hamanov over 3 years

@ColinD Some users have been setting gzip as the compression method. My answer sets it back to lz4 and rebuilds the ramdisk.