up vote 11 down vote favorite
3

I tried to install WPS Office on my laptop (ubuntu 16.10 Gnome, 64 bit) with Gdebi installer but it said 

Dependency is not satisfiable: libpng12-0

Then I tried to open this library as follows

sudo apt-get install libpng12-0

But I encountered an error:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libpng12-0 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

E: Package 'libpng12-0' has no installation candidate

Can anyone help? Thanks a lot

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up vote 10 down vote accepted

You can download the libpng12-0 package from here:

I had the same dependency problem. But downloading and installing fix edthe error. Ubuntu 16.10 killed these libs jeje.

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wow. it worked. thanks a lot. It took me the whole day! – Garp Oct 21 '16 at 23:49
    
following the instruction at the link to add the mirror to your sources worked for me – n8sty Sep 11 '17 at 17:57
up vote 4 down vote

Downloading and manually installing a package is not the recommended way of doing things in ubuntu, it is strongly suggested to use a package manager like aptitude or synaptic to download and install packages.

To do it in the command line first you have to add a repository. This involves modifying /etc/apt/sources.list so you must create a backup

Open a Terminal window

sudo nano /etc/apt/sources.list

At the top of the list add

#### BACKUP for /etc/apt/sources.list created <insert date here>

press ctrl+o to save the file to a new location. I have a folder in my home directory for backups, but you can put it anywhere you will remember that it exists. For my backup folder I saved it as /home/USERNAME/os_file_backups/backup_03-06-17_apt-sources.list hit enter to save, it will ask you if you want to save it with a different name press y to save the file and then ctrl-x to exit nano

once again go back to sources.list

sudo nano /etc/apt/sources.list

at the bottom of the file add

#### Manually Added sources
## source for libpng12-0 package
deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/ xenial main

^note for above, this is just the mirror for kernel.org you can add any of the mirrors from http://packages.ubuntu.com/xenial/amd64/libpng12-0/download and replace http://mirrors.kernel.org/ubuntu with any mirror you wish to use keeping /pool/main/libp/libpng/ at the end

press ctrl+x and hit yes to save the file

now to update the package list

sudo apt-get update

and install the package

sudo apt-get install libpng12-0

shazam you have added libpng-12-0 using apt so you will get updated packages whenever you run apt-get upgrade

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3  
I get the following errors on apt-get update: W: The repository 'http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng xenial Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/dists‌​/xenial/main/binary-‌​i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. – retorquere May 9 '17 at 11:15
    
(and libpng12-0 is not available after the update) – retorquere May 9 '17 at 11:17

protected by Community♦ Sep 10 '17 at 12:35

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