title: Physical KASLR disabled: no suitable memory region
body: <p>I built and installed the latest Kernel (v5.4) from source (downloaded from Linux repo). I followed the steps explained here:</p>
  
  <p><a href="https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html" rel="nofollow noreferrer">https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html</a></p>
  
  <p>I used <code>make menuconfig</code> but did not make any change to default values. After doing all steps, I rebooted but got this error on a black screen in boot time:</p>
  
  <blockquote>
    <p>Physical KASLR disabled: no suitable memory region!</p>
  </blockquote>
  
  <p>I`m using ubuntu 19.10 with deafult Kernel 5.3.0-23-generic.</p>
  
  <p>Here is some info and sth I did to solve thie problem:</p>
  
  <pre><code>&gt; cat /boot/config-5.3.0-23-generic | grep CONFIG_RANDOMIZE_BASE=y
  CONFIG_RANDOMIZE_BASE=y
  
  &gt; cat /boot/config-5.4.0+ | grep CONFIG_RANDOMIZE_BASE=y
  CONFIG_RANDOMIZE_BASE=y
  </code></pre>
  
  <p>I changed the Grub according to <a href="https://askubuntu.com/questions/1000525/kaslr-disabled-could-not-find-suitable-e820-region">https://askubuntu.com/questions/1000525/kaslr-disabled-could-not-find-suitable-e820-region</a> but nothing happened.</p>
  
  <p>Here is my first experience in building the kernel. I`d really appreciate it if you could help me.</p>