Problem with installing Some Packages and Updating my Ubuntu

Question

I am somewhat new to this operating system. I have been using it since 6 months. Initially there was no problem with my operating system but since the day I messed up with some wine software whenever I Click on "Check" in the update software section after a while a window is popping up and it says "Failed to download repository information" When I click on details it is something like this:

W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/precise/Release  Unable to find expected entry 'commercial/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release  Unable to find expected entry 'commercial/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http ://archive.ubuntu.com/ubuntu/dists/precise-updates/Release  Unable to find expected entry 'commercial/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)

, E:Some index files failed to download. They have been ignored, or old ones used instead.

I am unable to figure out the actual problem since a couple of days. I am even unable to install some Software like VLC,SKYPE,TeamViewer even Wine also. I am being reported the same problem always it is something like this:

Package dependencies cannot be resolved

This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time.


The following packages have unmet dependencies:

vlc: Depends: vlc-nox (= 2.0.3+git20120729+r318-0~r40~precise1) but 2.0.3+git20120729+r318-0~r40~precise1 is to be installed
     Depends: libavcodec-extra-53 (>= 4:0.8-1~) but 4:0.8.3ubuntu0.12.04.1 is to be installed
     Depends: libavutil-extra-51 (>= 4:0.8-1~) but 4:0.8.3ubuntu0.12.04.1 is to be installed
     Depends: libc6 (>= 2.15) but 2.15-0ubuntu10 is to be installed
     Depends: libfreetype6 (>= 2.2.1) but 2.4.8-1ubuntu2 is to be installed
     Depends: libgcc1 (>= 1:4.1.1) but 1:4.6.3-1ubuntu5 is to be installed
     Depends: libqtcore4 (>= 4:4.8.0) but 4:4.8.1-0ubuntu4.2 is to be installed
     Depends: libqtgui4 (>= 4:4.7.0~beta1) but 4:4.8.1-0ubuntu4.2 is to be installed
     Depends: libstdc++6 (>= 4.6) but 4.6.3-1ubuntu5 is to be installed
     Depends: zlib1g (>= 1:1.2.3.3.dfsg) but 1:1.2.3.4.dfsg-3ubuntu4 is to be installed

I became so ardent user of Ubuntu that It's impossible for me to uninstall and install it again. Can someone help me out here.?

Seems your repositories have been mixed up. Try the second solution here http://askubuntu.com/a/170082/17789 (Select Best Server) — con-f-use, Jul 30 '12 at 16:51
I think I had figured out the problem with my second problem, I mean with installation of VLC and other Wine progeams. I just removed VLC from the list in Ubuntu Software center -> Software Sources -> Authentication. Now I am able to install VLC without any problem. — deepak.prathapani, Jul 31 '12 at 14:10
have tried the above suggestion but it does not work. what next — , Mar 14 '13 at 17:11

score 1 · Answer 1 · edited Sep 02 '12 at 19:20

1

Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the commands below.

sudo apt-get install -f
sudo apt-get update

edited Sep 02 '12 at 19:20

Mitch

107,631

answered Sep 02 '12 at 07:03

KK Patel

19,083

score -1 · Answer 2 · edited Sep 02 '12 at 10:28

-1

Edited /etc/apt/sources.list manually and removed all instances of word "commercial". Problem solved. Backup that file first!

edited Sep 02 '12 at 10:28

jokerdino

41,320

answered Sep 02 '12 at 06:59

Torben Putkonen

1

How does this solve the problem? – RolandiXor Sep 23 '12 at 01:22

Problem with installing Some Packages and Updating my Ubuntu

2 Answers2