Ubuntu: Kernel panic (probably) goes on even after update to 4.4.0-112-generic (ubuntu 16.04.3 LTS)!



Question:

Unfortunately, I installed kernel 4.4.0-108 before seeing the relevant answer: Kernel panic after update to 4.4.0-108-generic

I have already discarded the problematic kernel (purged) and switched to 4.4.0-109 and as of today to 4.4.0-112, but one problem still remains: the failure to reboot the system. Everything else seems to work fine, except from the rebooting operation.

Here, you can see a printscreen picture from the problem:

printscreen

Any suggestions on how to handle this issue?

Thanks in advance!


Solution:1

For my home non-production 16.04 LTS machines I made the following decision:
I'll stay on 4.4.0-104 (and 4.4.0-103 as fallback) and 20170707 intel-microcode for complete and safe Meltdown and Spectre fixes which do not have side-effects (I do not mean speed here).

So I removed new kernels, reinstalled 103 and 104 and pinned corresponding packages.

Warning: do not follow steps below if you are using Ubuntu on production server or enterprise desktop.

Here are my steps to achieve this:

  1. Remove new kernels

    sudo apt-get purge linux-tools-generic linux-headers-generic linux-image-generic \  linux-headers-4.4.0-109 linux-headers-4.4.0-109-generic linux-image-4.4.0-109-generic linux-image-extra-4.4.0-109-generic linux-tools-4.4.0-109 linux-tools-4.4.0-109-generic \  linux-headers-4.4.0-110 linux-headers-4.4.0-110-generic linux-image-4.4.0-110-generic linux-image-extra-4.4.0-110-generic linux-tools-4.4.0-110 linux-tools-4.4.0-110-generic \  linux-headers-4.4.0-111 linux-headers-4.4.0-111-generic linux-image-4.4.0-111-generic linux-image-extra-4.4.0-111-generic linux-tools-4.4.0-111 linux-tools-4.4.0-111-generic \  linux-headers-4.4.0-112 linux-headers-4.4.0-112-generic linux-image-4.4.0-112-generic linux-image-extra-4.4.0-112-generic linux-tools-4.4.0-112 linux-tools-4.4.0-112-generic   
  2. Install 4.4.0-104 and 4.4.0-103 (as fallback)

    sudo apt-get install linux-headers-4.4.0-104 linux-headers-4.4.0-104-generic \  linux-image-4.4.0-104-generic linux-image-extra-4.4.0-104-generic \  linux-tools-4.4.0-104 linux-tools-4.4.0-104-generic linux-headers-4.4.0-103 linux-headers-4.4.0-103-generic \  linux-image-4.4.0-103-generic linux-image-extra-4.4.0-103-generic \  linux-tools-4.4.0-103 linux-tools-4.4.0-103-generic  
  3. Install all 4.4.0-104 packages from cache for sure

    sudo dpkg -i /var/cache/apt/archives/*4.4.0-104*.deb  
  4. Pin kernel-related package versions

    cat <<EOF | sudo tee /etc/apt/preferences.d/pin-kernels  Package: linux-headers-4.4.0-104  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-headers-4.4.0-104-generic  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-headers-generic  Pin: version 4.4.0.104.109  Pin-Priority: 1337    Package: linux-image-4.4.0-104-generic  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-image-extra-4.4.0-104-generic  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-image-generic  Pin: version 4.4.0.104.109  Pin-Priority: 1337    Package: linux-tools-4.4.0-104  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-tools-4.4.0-104-generic  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-libc-dev:i386  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-libc-dev  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-tools-common  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-source  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: linux-source-4.4.0  Pin: version 4.4.0-104.127  Pin-Priority: 1337    Package: intel-microcode  Pin: version 3.20170707.1~ubuntu16.04.0  Pin-Priority: 1337    EOF  

When normal patches will be released you can simply remove pin and install corresponding packages with the following commands:

sudo rm /etc/apt/preferences.d/pin-kernels  sudo apt-get update  sudo apt-get install linux-tools-generic linux-headers-generic linux-image-generic  sudo apt-get upgrade  sudo apt-get dist-upgrade  

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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