mini:/home/jasser/beryl# dpkg -l "libgl1*"
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
un  libgl1         <none>         (no description available)
rc  libgl1-mesa    6.5.1+cvs20060 A free implementation of the OpenGL API -- G
ii  libgl1-mesa-de 6.5.1-0.1      A free implementation of the OpenGL API -- G
in  libgl1-mesa-di <none>         (no description available)
ii  libgl1-mesa-dr 6.5.1-0.1      A free implementation of the OpenGL API -- D
un  libgl1-mesa-dr <none>         (no description available)
ii  libgl1-mesa-gl 6.5.1-0.1      A free implementation of the OpenGL API -- G
un  libgl1-mesa-sw <none>         (no description available)
mini:/home/jasser/beryl#