title: dpkg --list not showing installed kernel version
body: <p>I am running ubuntu 14.04 with kernel 3.13</p>
  
  <p>I was following eudyptula challenge which asked me to download kernel source from linus's git and build,install, which I did and now I have two kernels, 3.13 and 3.15.</p>
  
  <p>I wanted to verify the installation and read on some website that dpkg --list | grep linux-image would give me list of all installed kernels but I get only 3.13. </p>
  
  <p>I currently booted 3.15</p>
  
  <p>terminal outputs below:</p>
  
  <pre><code>ashish@ashish-PC:~$ uname -r
  3.15.0-07913-g64b2d1f
  
  ashish@ashish-PC:~$ dpkg --list | grep linux-image
  ii  linux-image-3.13.0-24-generic                         3.13.0-24.46                                        amd64        Linux kernel image for version 3.13.0 on 64 bit x86 SMP
  ii  linux-image-extra-3.13.0-24-generic                   3.13.0-24.46                                        amd64        Linux kernel extra modules for version 3.13.0 on 64 bit x86 SMP
  ii  linux-image-generic                                   3.13.0.24.28                                        amd64        Generic Linux kernel image
  </code></pre>