[mythtv-users] kernels

[Hika van den Hoven]

Hoi Daryl,

Wednesday, October 21, 2020, 9:55:37 PM, you wrote:




> On Wed, Oct 21, 2020 at 3:14 PM Hika van den Hoven <hikavdh at gmail.com> wrote:

> Hoi Daryl,
>  
>  Wednesday, October 21, 2020, 7:11:03 PM, you wrote:
>  
 >> this morning I find I can only boot on the older kernel: 5.4.0-51,
 >> but not 5.4.0-52, after a couple hard restarts, I get "initramfs
 >> unpacking failed  decoding failed"
 >> "kernel panic   not syncing   no working unit found"
 >> "try passing init=option to kernel"
 >> "see linux documentation/admin/guide/init.rst for guidance"
>  
>  
 >> Questions are: 1)Do I leave it running 24/7?
>  
>  
 >>                          2)Do I reconfigure grub, as in
 >> "https://www.systutorials.com/how-to-make-grub2-boot-to-older-kernel-version-in-ubuntu-20-04/"?
>  
>  
 >>                           3)Or, is there a way to repair the uncooperative kernel?
>  
>  
 >> TIA  Daryl    Ubuntu 20.04 mythtv 31 fixes.
 >> P.S. this time it isn't because of my mucking around, a couple of
 >> times over the past ten days I found the box stuck on the boot logo
 >> and a hard reboot worked, so I would guess a slow deprecation?
>  
>  
>  Try removing and reinstalling the kernel. Possibly the initramfs is
>  damaged. This assuming that both kernels use their own initramfs file.
>  
>  Tot mails,
>    Hika                            mailto:hikavdh at gmail.com
>  
>  "Zonder hoop kun je niet leven
>  Zonder leven is er geen hoop
>  Het eeuwige dilemma
>  Zeker als je hoop moet vernietigen om te kunnen overleven!"
>  
>  De lerende Mens
>  
>  _______________________________________________



> Hoi Hika, good to hear from you, what do you think about this suggestion:
> https://askubuntu.com/questions/253244/reinstall-latest-kernel

> specifically #9?

I do not work with Ubuntu but with Gentoo and here kernel updating is
done manual. So I have no experience with the proces under Ubuntu.
But that said, do you still have the old kernel in your bootmenu? And
selecting it does it boot OK?

Then if I understand it right the in page given command:

   sudo update-initramfs -u -k 3.2.0-##-generic-pae

does a rebuild of the initramfs. If so that should fix a broken
initramfs.

Otherwise, change grub to by default use this old kernel and you should be
able to uninstall the new kernel while still being able to boot.
Then being back at your previous situation, reinstall the new kernel
and initramfs.

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens