title: Failing to downgrade my kernel version Ubuntu 20.04
body: <p>I am trying to downgrade my kernel version, because I am having problems installing AMD-pro GPU drivers.
  So I am using Ubuntu 20.04 and my kernel is:</p>
  <p>IN:</p>
  <pre><code>uname -r
  </code></pre>
  <p>OUT:</p>
  <pre><code>5.4.0-65-generic
  </code></pre>
  <p>I need kernel ver 5.4.0-54 so I am doing this:</p>
  <p>IN:</p>
  <pre><code>sudo apt install linux-image-5.4.0-54-generic linux-headers-5.4.0-54-generic linux-modules-extra-5.4.0-54-generic
  </code></pre>
  <p>OUT:</p>
  <pre><code>Building dependency tree
  Reading state information... Done
  linux-headers-5.4.0-54-generic is already the newest version (5.4.0-54.60).
  linux-image-5.4.0-54-generic is already the newest version (5.4.0-54.60).
  linux-modules-extra-5.4.0-54-generic is already the newest version (5.4.0-54.60).
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  </code></pre>
  <p>But afer doing all this, and rebooting the system, uname -r command is showing 5.4.0-65-generic not version 54.</p>
  <p>What I am doing wrong??, Any idea??</p>