Depends: lib... but it is not installable

[yygyt]

Hello everyone,

I am using ubuntu 12.04 on my laptop.

Last night I needed to install a package (octovis (http://www.ros.org/wiki/octovis)). When I entered the command

sudo apt-get install ros-fuerte-octovis

I get the following error



The following packages have unmet dependencies:
ros-fuerte-octovis : Depends: libqt4 but it is not installable
Depends: libqglviewer-qt4 but it is not installable
E: Unable to correct problems, you have held broken packages.

There are some *suggestions* (http://ubuntuforums.org/archive/index.php/t-1615221.html) for synaptic package manager, but in 12.04 synaptic package manager does not exist, as far as I know.

*Here* (http://ubuntuforums.org/archive/index.php/t-939605.html) one suggests to use apt-get with -f argument to fix broken packages. It didn't solve my problem either.

Can someone guide me to solve this problem?

Thanks in advance.

[ajgreeny]

You can install synaptic without a problem. Just make sure the universe & multiverse repos are enabled in software-sources, then run
sudo apt-get install synapticIt's the first addition I make these days as I simply can not function without it. The USC is a poor, and useless substitute for synaptic when attempting to sort out problems of this sort.