Linux admin tips: kubuntu 20.04

• 2022-3-7(Mon): linux firware update failure
• Linux firmware update casts and Write error when sudo apt update.

  Setting up linux-firmware (1.187.25) ...
  update-initramfs: Generating /boot/initrd.img-5.11.0-46-generic
  I: The initramfs will attempt to resume from /dev/dm-2
  I: (/dev/mapper/vgubuntu-swap_1)
  I: Set the RESUME variable to override this.
  Error 24 : Write error : cannot write compressed block
  E: mkinitramfs failure cpio 141 lz4 -9 -l 24
  update-initramfs: failed for /boot/initrd.img-5.11.0-46-generic with 1.
  dpkg: error processing package linux-firmware (--configure):
   installed linux-firmware package post-installation script subprocess returned error exit status 1
              

• Solution: purge all the older kernels which are no longer in use or are causing errors. then update again.

# sudo dpkg -l | egrep "linux-(signed|modules|image|headers)" | grep -v $(uname -r | cut -d - -f 1) | awk {'print $2'} | xargs sudo apt purge -y
# sudo apt --fix-broken install
# sudo apt upgrade
        

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Copyright (C) 2022 Hitoshi Yamauchi