Kernel Installation Issue

lowjunen New Member Posts: 5

Hello folks,

Looking for some help on the kernel installation. Installation worked out fine on a previous UpBoard I was using a few months back. But I'm having issues on my second board.

I followed the exact steps in

and also augmented it with the instructions from @ccalde in

In both cases, on reboot after kernel installation, I get the error
"ALERT! UUID=6a32b157-fe05-4c8c-9c7c-c8fadce09770 does not exist. Dropping to a shell!

So I'm stuck with a single terminal (no GUI) with (initramfs).

Some things to note... when removing the generic kernel, the dpkg failed to remove one of the packages. I didn't take down the exact number unfortunately but I can replicate it again if need be. To workaround this, I have tried ignoring it and force removing it. In both cases, to install the UpBoard kernel, I had to do a 'sudo apt-get install -f' first as the dependencies were missing.




  • Al Bee
    Al Bee New Member Posts: 6

    @lowjunen I'm experiencing the same exact issue you described, were you able to resolved it?

  • ccalde
    ccalde New Member Posts: 348 ✭✭✭

    Hi @lowjunen ,

    Could you please provide the full log for your installation using the Ubuntu kernel instruction from the Wiki?

  • lowjunen
    lowjunen New Member Posts: 5

    Hey @ccalde. Sorry if this is a dumb question but how would one go about doing that? Are you referring to the messages published in between the terminal commands?

    @Al Bee No but I am trying out the alternative posted by @hoejhl in the second link though. I'll update to this thread accordingly.

  • lowjunen
    lowjunen New Member Posts: 5

    Purging configuration files for linux-modules-extra-4.15.0-50-generic (4.15.0-50.54~16.04.1) ...
    Removing linux-image-4.15.0-50-generic (4.15.0-50.54~16.04.1) ...
    E: Aborting removal of the running kernel
    dpkg: error processing package linux-image-4.15.0-50-generic (--purge):
    subprocess installed pre-removal script returned error exit status 1
    Removing linux-image-generic-hwe-16.04-upboard ( ...
    Removing linux-modules-extra-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    Purging configuration files for linux-modules-extra-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    Removing linux-image-unsigned-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    I: /vmlinuz is now a symlink to boot/vmlinuz-4.15.0-50-generic
    I: /initrd.img is now a symlink to boot/initrd.img-4.15.0-50-generic
    update-initramfs: Deleting /boot/initrd.img-4.15.0-37-generic
    Generating grub configuration file ...
    Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
    Found linux image: /boot/vmlinuz-4.15.0-50-generic
    Found initrd image: /boot/initrd.img-4.15.0-50-generic
    Adding boot menu entry for EFI firmware configuration
    Purging configuration files for linux-image-unsigned-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    rmdir: failed to remove '/lib/modules/4.15.0-37-generic': Directory not empty
    Removing linux-modules-4.15.0-29-generic (4.15.0-29.31~16.04.1) ...
    Purging configuration files for linux-modules-4.15.0-29-generic (4.15.0-29.31~16.04.1) ...
    Removing linux-modules-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    Purging configuration files for linux-modules-4.15.0-37-generic (4.15.0-37.40~upboard03) ...
    Removing snapd-login-service (1.33-0ubuntu0.16.04.1) ...
    Purging configuration files for snapd-login-service (1.33-0ubuntu0.16.04.1) ...
    Removing thermald (1.5-2ubuntu4) ...
    Purging configuration files for thermald (1.5-2ubuntu4) ...
    dpkg: linux-modules-4.15.0-50-generic: dependency problems, but removing anyway as you requested:
    linux-image-4.15.0-50-generic depends on linux-modules-4.15.0-50-generic.

    Removing linux-modules-4.15.0-50-generic (4.15.0-50.54~16.04.1) ...
    Purging configuration files for linux-modules-4.15.0-50-generic (4.15.0-50.54~16.04.1) ...
    dpkg: warning: while removing linux-modules-4.15.0-50-generic, directory '/lib/modules/4.15.0-50-generic' not empty so not removed
    Processing triggers for initramfs-tools (0.122ubuntu8.14) ...
    update-initramfs: Generating /boot/initrd.img-4.15.0-50-generic
    depmod: WARNING: could not open /var/tmp/mkinitramfs_nyeK4g/lib/modules/4.15.0-50-generic/modules.order: No such file or directory
    depmod: WARNING: could not open /var/tmp/mkinitramfs_nyeK4g/lib/modules/4.15.0-50-generic/modules.builtin: No such file or directory
    Processing triggers for man-db (2.7.5-1) ...
    Processing triggers for dbus (1.10.6-1ubuntu3.3) ...
    Errors were encountered while processing:
    E: Sub-process /usr/bin/dpkg returned an error code (1)

    This is the last from the terminal that I get when I remove the kernel. It seems like it's preventing me from removing the current kernel?

  • lowjunen
    lowjunen New Member Posts: 5

    New update. So... following what @hoejhl did did not work BUT...

    Going down the rabbit hole from the above log... I did a force removal of the running kernel using the instructions from
    Then carried on with the rest of the steps on the wiki. So far so good. I'm no longer getting the single terminal on bootup and uname -a gives the right kernel.

  • ccalde
    ccalde New Member Posts: 348 ✭✭✭

    Hi @lowjunen ,

    It looks like you have issues to remove the generic kernel, right?
    When you run the next command following the UP Wiki instructions:
    sudo apt-get autoremove --purge 'linux-.*generic'

    Did you confirm or abort to remove the kernels before install the UP supported kernel?

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