Problem with libpng12-0 - please help me

Jan Brøndum Johansson insomniacno1 at gmail.com
Sat Mar 20 03:53:48 UTC 2021


Hello, I followed the instructions on how to install PDF Editor in this 
article by you https://vitux.com/how-to-edit-pdf-files-in-ubuntu/

Unfortunately this caused me some serious problems on my Xubuntu 16,04 
and I'm hoping you will help me get this sorted out.

As of now I can't update my system becaúse its blocked by unmet 
dependencies caused by libpng12 which can't be installed properly. It 
can't be uninstalled either.

I have attached the problem in detail downstairs.

Hope you will help me.

Thank you in advance.
-- 


*Med venlig hilsen / With kind regards

Jan Brøndum Johansson
*
*
*
*th at th-ThinkPad-X300:~$ cd /tmp
th at th-ThinkPad-X300:/tmp$ wget 
http://mirrors.kernel.org/ubuntu/pool/main/l/lcms/liblcms1_1.19.dfsg-1ubuntu3_amd64.deb
--2021-03-20 10:45:06-- 
http://mirrors.kernel.org/ubuntu/pool/main/l/lcms/liblcms1_1.19.dfsg-1ubuntu3_amd64.deb
Resolving mirrors.kernel.org (mirrors.kernel.org)... 198.145.21.9, 
2001:19d0:306:6:0:1994:3:14
Connecting to mirrors.kernel.org 
(mirrors.kernel.org)|198.145.21.9|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: 
http://mirrors.edge.kernel.org/ubuntu/pool/main/l/lcms/liblcms1_1.19.dfsg-1ubuntu3_amd64.deb 
[following]
--2021-03-20 10:45:07-- 
http://mirrors.edge.kernel.org/ubuntu/pool/main/l/lcms/liblcms1_1.19.dfsg-1ubuntu3_amd64.deb
Resolving mirrors.edge.kernel.org (mirrors.edge.kernel.org)... 
147.75.95.133, 2604:1380:3000:1500::1
Connecting to mirrors.edge.kernel.org 
(mirrors.edge.kernel.org)|147.75.95.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 105756 (103K) [application/octet-stream]
Saving to: ‘liblcms1_1.19.dfsg-1ubuntu3_amd64.deb’

liblcms1_1.19.dfsg-1ubuntu3_a 
100%[=================================================>] 103.28K   
328KB/s    in 0.3s

2021-03-20 10:45:08 (328 KB/s) - ‘liblcms1_1.19.dfsg-1ubuntu3_amd64.deb’ 
saved [105756/105756]

th at th-ThinkPad-X300:/tmp$ wget 
http://mirrors.kernel.org/ubuntu/pool/main/libm/libmng/libmng1_1.0.10-3_amd64.deb
--2021-03-20 10:45:29-- 
http://mirrors.kernel.org/ubuntu/pool/main/libm/libmng/libmng1_1.0.10-3_amd64.deb
Resolving mirrors.kernel.org (mirrors.kernel.org)... 198.145.21.9, 
2001:19d0:306:6:0:1994:3:14
Connecting to mirrors.kernel.org 
(mirrors.kernel.org)|198.145.21.9|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: 
http://mirrors.edge.kernel.org/ubuntu/pool/main/libm/libmng/libmng1_1.0.10-3_amd64.deb 
[following]
--2021-03-20 10:45:30-- 
http://mirrors.edge.kernel.org/ubuntu/pool/main/libm/libmng/libmng1_1.0.10-3_amd64.deb
Resolving mirrors.edge.kernel.org (mirrors.edge.kernel.org)... 
147.75.95.133, 2604:1380:3000:1500::1
Connecting to mirrors.edge.kernel.org 
(mirrors.edge.kernel.org)|147.75.95.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 214904 (210K) [application/octet-stream]
Saving to: ‘libmng1_1.0.10-3_amd64.deb’

libmng1_1.0.10-3_amd64.deb 
100%[=================================================>] 209.87K   
419KB/s    in 0.5s

2021-03-20 10:45:31 (419 KB/s) - ‘libmng1_1.0.10-3_amd64.deb’ saved 
[214904/214904]

th at th-ThinkPad-X300:/tmp$ wget 
http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
--2021-03-20 10:45:47-- 
http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
Resolving mirrors.kernel.org (mirrors.kernel.org)... 198.145.21.9, 
2001:19d0:306:6:0:1994:3:14
Connecting to mirrors.kernel.org 
(mirrors.kernel.org)|198.145.21.9|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: 
http://mirrors.edge.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb 
[following]
--2021-03-20 10:45:48-- 
http://mirrors.edge.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb
Resolving mirrors.edge.kernel.org (mirrors.edge.kernel.org)... 
147.75.95.133, 2604:1380:3000:1500::1
Connecting to mirrors.edge.kernel.org 
(mirrors.edge.kernel.org)|147.75.95.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 116466 (114K) [application/octet-stream]
Saving to: ‘libpng12-0_1.2.54-1ubuntu1_amd64.deb’

libpng12-0_1.2.54-1ubuntu1_am 
100%[=================================================>] 113.74K   
351KB/s    in 0.3s

2021-03-20 10:45:49 (351 KB/s) - ‘libpng12-0_1.2.54-1ubuntu1_amd64.deb’ 
saved [116466/116466]

th at th-ThinkPad-X300:/tmp$ wget 
http://mirrors.kernel.org/ubuntu/pool/main/q/qt-x11-free/libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb
--2021-03-20 10:46:28-- 
http://mirrors.kernel.org/ubuntu/pool/main/q/qt-x11-free/libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb
Resolving mirrors.kernel.org (mirrors.kernel.org)... 198.145.21.9, 
2001:19d0:306:6:0:1994:3:14
Connecting to mirrors.kernel.org 
(mirrors.kernel.org)|198.145.21.9|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: 
http://mirrors.edge.kernel.org/ubuntu/pool/main/q/qt-x11-free/libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb 
[following]
--2021-03-20 10:46:29-- 
http://mirrors.edge.kernel.org/ubuntu/pool/main/q/qt-x11-free/libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb
Resolving mirrors.edge.kernel.org (mirrors.edge.kernel.org)... 
147.75.95.133, 2604:1380:3000:1500::1
Connecting to mirrors.edge.kernel.org 
(mirrors.edge.kernel.org)|147.75.95.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3288182 (3.1M) [application/octet-stream]
Saving to: ‘libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb’

libqt3-mt_3.3.8-b-8ubuntu3_am 
100%[=================================================>] 3.14M  
1.82MB/s    in 1.7s

2021-03-20 10:46:31 (1.82 MB/s) - ‘libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb’ 
saved [3288182/3288182]

th at th-ThinkPad-X300:/tmp$ wget 
http://mirrors.kernel.org/ubuntu/pool/universe/p/pdfedit/pdfedit_0.4.5-2_amd64.deb
--2021-03-20 10:46:46-- 
http://mirrors.kernel.org/ubuntu/pool/universe/p/pdfedit/pdfedit_0.4.5-2_amd64.deb
Resolving mirrors.kernel.org (mirrors.kernel.org)... 198.145.21.9, 
2001:19d0:306:6:0:1994:3:14
Connecting to mirrors.kernel.org 
(mirrors.kernel.org)|198.145.21.9|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: 
http://mirrors.edge.kernel.org/ubuntu/pool/universe/p/pdfedit/pdfedit_0.4.5-2_amd64.deb 
[following]
--2021-03-20 10:46:47-- 
http://mirrors.edge.kernel.org/ubuntu/pool/universe/p/pdfedit/pdfedit_0.4.5-2_amd64.deb
Resolving mirrors.edge.kernel.org (mirrors.edge.kernel.org)... 
147.75.95.133, 2604:1380:3000:1500::1
Connecting to mirrors.edge.kernel.org 
(mirrors.edge.kernel.org)|147.75.95.133|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2095970 (2.0M) [application/octet-stream]
Saving to: ‘pdfedit_0.4.5-2_amd64.deb’

pdfedit_0.4.5-2_amd64.deb 
100%[=================================================>] 2.00M   
200KB/s    in 9.0s

2021-03-20 10:46:57 (227 KB/s) - ‘pdfedit_0.4.5-2_amd64.deb’ saved 
[2095970/2095970]

th at th-ThinkPad-X300:/tmp$ sudo dpkg -i *.deb
(Reading database ... 361910 files and directories currently installed.)
Preparing to unpack liblcms1_1.19.dfsg-1ubuntu3_amd64.deb ...
Unpacking liblcms1:amd64 (1.19.dfsg-1ubuntu3) over (1.19.dfsg-1ubuntu3) ...
Preparing to unpack libmng1_1.0.10-3_amd64.deb ...
Unpacking libmng1:amd64 (1.0.10-3) over (1.0.10-3) ...
Preparing to unpack libpng12-0_1.2.54-1ubuntu1_amd64.deb ...
Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1) over (1.2.54-1ubuntu1) ...
Preparing to unpack libqt3-mt_3.3.8-b-8ubuntu3_amd64.deb ...
Unpacking libqt3-mt (3:3.3.8-b-8ubuntu3) over (3:3.3.8-b-8ubuntu3) ...
Preparing to unpack pdfedit_0.4.5-2_amd64.deb ...
Unpacking pdfedit (0.4.5-2) over (0.4.5-2) ...
Setting up liblcms1:amd64 (1.19.dfsg-1ubuntu3) ...
Setting up libmng1:amd64 (1.0.10-3) ...
dpkg: error processing package libpng12-0:amd64 (--install):
  package libpng12-0:amd64 1.2.54-1ubuntu1 cannot be configured because 
libpng12-0:i386 is at a different version (1.2.54-1ubuntu1.1)
dpkg: dependency problems prevent configuration of libqt3-mt:
  libqt3-mt depends on libpng12-0 (>= 1.2.13-4); however:
   Package libpng12-0:amd64 is not configured yet.

dpkg: error processing package libqt3-mt (--install):
  dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of pdfedit:
  pdfedit depends on libqt3-mt (>= 3:3.3.8-b); however:
   Package libqt3-mt is not configured yet.

dpkg: error processing package pdfedit (--install):
  dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.23-0ubuntu11.2) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.2) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for menu (2.1.47ubuntu1.16.04.1) ...
Errors were encountered while processing:
  libpng12-0:amd64
  libqt3-mt
  pdfedit
*
*
*
*I then tried to see if I could install libpng12 manually by downloading 
the .deb file, that doesn't work because until the unmet dependencies 
are fixed nothing can be installed.*
*
*
*I then tried to uninstall, which resulted in the following:*
*th at th-ThinkPad-X300:/tmp$ sudo apt autoremove liblcms1 libmng1 
libpng12-0 libqt3-mt pdfedit
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies.
  abiword : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  blender : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  compiz-plugins-default : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  digikam : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  dvdauthor : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  etc1tool : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  gimp : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  gstreamer1.0-plugins-bad : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  gstreamer1.0-plugins-good : Depends: libpng12-0 (>= 1.2.13-4) but it 
is not going to be installed
  gthumb : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  icoutils : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  kipi-plugins : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libabiword-3.0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libcairo2 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libcupsfilters1 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libffmpegthumbnailer4v5 : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  libfreetype6 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libgd3 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  libgdiplus : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libgdk-pixbuf2.0-0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libgegl-0.3-0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libgraphicsmagick-q16-3 : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  libgs9 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  libgxps2 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  libkhtml5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  liblept5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  libmagickcore-6.q16-2 : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  libopencv-highgui2.4v5 : Depends: libpng12-0 (>= 1.2.13-4) but it is 
not going to be installed
  libopenimageio1.6 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libpano13-3 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libplymouth4 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libpoppler58 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libqt5gui5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libqt5webkit5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libqtgui4 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libqtwebkit4 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libquicktime2 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  libreoffice-core : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libsdl-image1.2 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libsdl2-image-2.0-0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libsox2 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  libvigraimpex5v5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libwebkit2gtk-4.0-37 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libwebkit2gtk-4.0-37-gtk2 : Depends: libpng12-0 (>= 1.2.13-4) but it 
is not going to be installed
  libwebkitgtk-1.0-0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libwebkitgtk-3.0-0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libwmf0.2-7 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  libwxgtk3.0-0v5 : Depends: libpng12-0 (>= 1.2.13-4) but it is not 
going to be installed
  libzvbi0 : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  mencoder : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  mjpegtools : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  mplayer : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  netpbm : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  openjdk-8-jre : Depends: libpng12-0 (>= 1.2.13-4) but it is not going 
to be installed
  sane-utils : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to 
be installed
  skanlite : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  transfig : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  tumbler : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  vlc-nox : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  x11-apps : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
  xsane : Depends: libpng12-0 (>= 1.2.13-4) but it is not going to be 
installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or 
specify a solution).
*
*
*
*I then tried sudo apt-get -f install which resulted in :*
*th at th-ThinkPad-X300:/tmp$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer 
required:
   libcanon-proprio-bin linux-headers-4.4.0-203 
linux-headers-4.4.0-203-generic linux-image-4.4.0-203-generic
   linux-modules-4.4.0-203-generic linux-modules-extra-4.4.0-203-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
   libpng12-0
The following packages will be upgraded:
   libpng12-0
1 to upgrade, 0 to newly install, 0 to remove and 1 not to upgrade.
4 not fully installed or removed.
Need to get 0 B/116 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 361910 files and directories currently installed.)
Preparing to unpack .../libpng12-0_1.2.54-1ubuntu1.1_amd64.deb ...
Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1.1) over (1.2.54-1ubuntu1) ...
dpkg: error processing archive 
/var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb (--unpack):
  trying to overwrite shared 
'/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from 
other instances of package libpng12-0:amd64
Processing triggers for libc-bin (2.23-0ubuntu11.2) ...
Errors were encountered while processing:
  /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
th at th-ThinkPad-X300:/tmp$
*
*
*
*And I'm stuck here
*

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