# Pastebin xbOv3LeC
If i use apt-get it's showing the following error Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package xgamma is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  x11-xserver-utils:i386 x11-xserver-utils

E: Package 'xgamma' has no installation candidate