2 Problems

[Balmung4500]

i still need help

[SuaSwe]

$ gksu nautilus /var/lib/dpkg/info

(This opens the File Manager with root privileges).

Locate the package folder/file openjdk-7-jre-headless and either Delete it or Move it to Trash. Close the File Manager.

Do you still have anything listed for "openjdk-7-jre-headless (whether followed by more characters or not) when following the above steps? Additionally, please post the output of the following Terminal command:

dpkg --get-selections | grep -i openjdk

Thanks!

[Balmung4500]

Do you still have anything listed for "openjdk-7-jre-headless (whether followed by more characters or not) when following the above steps? Additionally, please post the output of the following Terminal command:

dpkg --get-selections | grep -i openjdk

Thanks!

balmung@Evermore-PC:~$ dpkg --get-selections | grep -i 
openjdkopenjdk-6-jre                    install
openjdk-6-jre-headless                install
openjdk-6-jre-lib                install
openjdk-7-jre                    install
openjdk-7-jre-headless                install
openjdk-7-jre-lib                install

[SuaSwe]

OK, now can you do:

sudo apt-get remove --purge  icedtea-7-jre-cacao icedtea-7-jre-jamvm openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib
sudo apt-get clean 
dpkg --get-selections | egrep -i 'openjdk|icedtea'

... and post the output? Cheers!

Also, is there any reason you've got openjdk-6 there as well? Would you be against removing them also?

[Balmung4500]

OK, now can you do:

sudo apt-get remove --purge  icedtea-7-jre-cacao icedtea-7-jre-jamvm openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib
sudo apt-get clean 
dpkg --get-selections | egrep -i 'openjdk|icedtea'

... and post the output? Cheers!

Also, is there any reason you've got openjdk-6 there as well? Would you be against removing them also?

Minecraft launcher i was using

balmung@Evermore-PC:~$ sudo apt-get remove --purge  icedtea-7-jre-cacao icedtea-7-jre-jamvm openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib[sudo] password for balmung: 
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:
 icedtea-7-plugin : Depends: openjdk-7-jre
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
balmung@Evermore-PC:~$ sudo apt-get clean
balmung@Evermore-PC:~$ dpkg --get-selections | egrep -i 'openjdk|icedtea'
icedtea-6-jre-cacao				install
icedtea-6-jre-jamvm				install
icedtea-7-jre-cacao				install
icedtea-7-jre-jamvm				install
icedtea-7-plugin				install
icedtea-netx					install
icedtea-netx-common				install
openjdk-6-jre					install
openjdk-6-jre-headless				install
openjdk-6-jre-lib				install
openjdk-7-jre					install
openjdk-7-jre-headless				install
openjdk-7-jre-lib				install
balmung@Evermore-PC:~$

[SuaSwe]

I haven't encountered this problem before but it looks to me like openjdk-7 is not being removed because other packages rely on it. In this instance I can only tell you what I would do in your position, which is to remove the whole lot starting with the icedtea packages, then start from scratch, e.g.:

sudo apt-get remove --purge icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-7-jre-cacao icedtea-7-jre-jamvm icedtea-7-plugin icedtea-netx icedtea-netx-common
sudo apt-get remove --purge openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib     ### openjdk-6 probably doesn't have any effect on the rest of the problem; I would remove it if I were you anyway though, just to tidy things up!
sudo apt-get remove --purge openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib
sudo apt-get clean
sudo apt-get update

... then review what packages you need for your purposes and reinstall them. Like I say, I don't know that this will work but it is what I would do if I were you. If you wish, please carry on, grab the output and post it back here!

[Balmung4500]

I haven't encountered this problem before but it looks to me like openjdk-7 is not being removed because other packages rely on it. In this instance I can only tell you what I would do in your position, which is to remove the whole lot starting with the icedtea packages, then start from scratch, e.g.:

sudo apt-get remove --purge icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-7-jre-cacao icedtea-7-jre-jamvm icedtea-7-plugin icedtea-netx icedtea-netx-common
sudo apt-get remove --purge openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib     ### openjdk-6 probably doesn't have any effect on the rest of the problem; I would remove it if I were you anyway though, just to tidy things up!
sudo apt-get remove --purge openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib
sudo apt-get clean
sudo apt-get update

... then review what packages you need for your purposes and reinstall them. Like I say, I don't know that this will work but it is what I would do if I were you. If you wish, please carry on, grab the output and post it back here!

balmung@Evermore-PC:~$ sudo apt-get remove --purge icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-7-jre-cacao icedtea-7-jre-jamvm icedtea-7-plugin icedtea-netx icedtea-netx-common[sudo] password for balmung: 
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:
 openjdk-7-jre-headless : Depends: openjdk-7-jre-lib (= 7u15-2.3.7-0ubuntu1~12.04) but 7u15-2.3.7-0ubuntu1~12.04.1 is to be installed
                          Recommends: icedtea-7-jre-jamvm (= 7u15-2.3.7-0ubuntu1~12.04) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
balmung@Evermore-PC:~$ sudo apt-get remove --purge openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib 
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:
 icedtea-6-jre-cacao : Depends: openjdk-6-jre-headless (= 6b27-1.12.3-0ubuntu1~12.04)
 icedtea-6-jre-jamvm : Depends: openjdk-6-jre-headless (= 6b27-1.12.3-0ubuntu1~12.04)
 openjdk-7-jre-headless : Depends: openjdk-7-jre-lib (= 7u15-2.3.7-0ubuntu1~12.04) but 7u15-2.3.7-0ubuntu1~12.04.1 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
balmung@Evermore-PC:~$ sudo apt-get remove --purge openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib
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:
 icedtea-7-jre-cacao : Depends: openjdk-7-jre-headless (= 7u15-2.3.7-0ubuntu1~12.04)
 icedtea-7-jre-jamvm : Depends: openjdk-7-jre-headless (= 7u15-2.3.7-0ubuntu1~12.04)
 icedtea-7-plugin : Depends: openjdk-7-jre
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
balmung@Evermore-PC:~$ sudo apt-get clean
balmung@Evermore-PC:~$ sudo apt-get update
Ign http://dl.google.com stable InRelease
Hit http://dl.google.com stable Release.gpg                                    
Hit http://dl.google.com stable Release                                        
Ign http://archive.canonical.com precise InRelease                             
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://ppa.launchpad.net precise InRelease                                 
Ign http://archive.ubuntu.com precise InRelease                                
Ign http://archive.ubuntu.com precise-updates InRelease                        
Ign http://archive.ubuntu.com precise-backports InRelease                      
Ign http://archive.ubuntu.com precise-security InRelease                       
Hit http://repo.steampowered.com precise InRelease                             
Hit http://dl.google.com stable/main i386 Packages                             
Ign http://dl.google.com stable/main TranslationIndex                          
Ign http://ppa.launchpad.net precise InRelease                                 
Hit http://ppa.launchpad.net precise Release.gpg                               
Hit http://ppa.launchpad.net precise Release.gpg                               
Hit http://repo.steampowered.com precise/steam Sources                         
Hit http://archive.canonical.com precise Release.gpg                           
Hit http://archive.ubuntu.com precise Release.gpg                              
Hit http://archive.ubuntu.com precise-updates Release.gpg                      
Hit http://archive.ubuntu.com precise-backports Release.gpg                    
Hit http://ppa.launchpad.net precise Release.gpg                               
Hit http://archive.canonical.com precise Release                               
Hit http://archive.ubuntu.com precise-security Release.gpg                     
Hit http://repo.steampowered.com precise/steam i386 Packages                   
Hit http://ppa.launchpad.net precise Release.gpg                               
Hit http://ppa.launchpad.net precise Release                                   
Hit http://archive.canonical.com precise/partner Sources                       
Hit http://archive.ubuntu.com precise Release                                  
Hit http://archive.ubuntu.com precise-updates Release                          
Hit http://ppa.launchpad.net precise Release                                   
Hit http://archive.canonical.com precise/partner i386 Packages                 
Ign http://archive.canonical.com precise/partner TranslationIndex              
Hit http://archive.ubuntu.com precise-backports Release                        
Ign http://repo.steampowered.com precise/steam TranslationIndex                
Hit http://ppa.launchpad.net precise Release                                   
Hit http://ppa.launchpad.net precise Release                                   
Hit http://archive.ubuntu.com precise-security Release                         
Hit http://archive.ubuntu.com precise/restricted Sources                       
Hit http://archive.ubuntu.com precise/main Sources                             
Hit http://archive.ubuntu.com precise/multiverse Sources                       
Hit http://archive.ubuntu.com precise/universe Sources                         
Hit http://archive.ubuntu.com precise/main i386 Packages                       
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://ppa.launchpad.net precise/main i386 Packages                        
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Hit http://archive.ubuntu.com precise/restricted i386 Packages                 
Hit http://archive.ubuntu.com precise/universe i386 Packages                   
Hit http://archive.ubuntu.com precise/multiverse i386 Packages                 
Hit http://archive.ubuntu.com precise/main TranslationIndex                    
Hit http://archive.ubuntu.com precise/multiverse TranslationIndex              
Hit http://archive.ubuntu.com precise/restricted TranslationIndex              
Hit http://archive.ubuntu.com precise/universe TranslationIndex                
Hit http://archive.ubuntu.com precise-updates/restricted Sources               
Hit http://archive.ubuntu.com precise-updates/main Sources                     
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://ppa.launchpad.net precise/main i386 Packages                        
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://ppa.launchpad.net precise/main i386 Packages                        
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Hit http://ppa.launchpad.net precise/main Sources                              
Hit http://archive.ubuntu.com precise-updates/multiverse Sources               
Hit http://archive.ubuntu.com precise-updates/universe Sources                 
Hit http://archive.ubuntu.com precise-updates/main i386 Packages               
Hit http://archive.ubuntu.com precise-updates/restricted i386 Packages         
Hit http://archive.ubuntu.com precise-updates/universe i386 Packages           
Hit http://archive.ubuntu.com precise-updates/multiverse i386 Packages         
Hit http://ppa.launchpad.net precise/main i386 Packages                        
Ign http://ppa.launchpad.net precise/main TranslationIndex                     
Hit http://archive.ubuntu.com precise-updates/main TranslationIndex            
Hit http://archive.ubuntu.com precise-updates/multiverse TranslationIndex      
Hit http://archive.ubuntu.com precise-updates/restricted TranslationIndex      
Hit http://archive.ubuntu.com precise-updates/universe TranslationIndex        
Hit http://archive.ubuntu.com precise-backports/main Sources                   
Hit http://archive.ubuntu.com precise-backports/restricted Sources             
Hit http://archive.ubuntu.com precise-backports/universe Sources               
Hit http://archive.ubuntu.com precise-backports/multiverse Sources             
Hit http://archive.ubuntu.com precise-backports/main i386 Packages             
Hit http://archive.ubuntu.com precise-backports/restricted i386 Packages       
Ign http://dl.google.com stable/main Translation-en_US                         
Hit http://archive.ubuntu.com precise-backports/universe i386 Packages         
Hit http://archive.ubuntu.com precise-backports/multiverse i386 Packages       
Hit http://archive.ubuntu.com precise-backports/main TranslationIndex          
Hit http://archive.ubuntu.com precise-backports/multiverse TranslationIndex    
Hit http://archive.ubuntu.com precise-backports/restricted TranslationIndex    
Hit http://archive.ubuntu.com precise-backports/universe TranslationIndex      
Hit http://archive.ubuntu.com precise-security/restricted Sources              
Hit http://archive.ubuntu.com precise-security/main Sources                    
Hit http://archive.ubuntu.com precise-security/multiverse Sources              
Hit http://archive.ubuntu.com precise-security/universe Sources                
Hit http://archive.ubuntu.com precise-security/main i386 Packages              
Hit http://archive.ubuntu.com precise-security/restricted i386 Packages        
Hit http://archive.ubuntu.com precise-security/universe i386 Packages          
Hit http://archive.ubuntu.com precise-security/multiverse i386 Packages        
Hit http://archive.ubuntu.com precise-security/main TranslationIndex           
Hit http://archive.ubuntu.com precise-security/multiverse TranslationIndex     
Hit http://archive.ubuntu.com precise-security/restricted TranslationIndex     
Hit http://archive.ubuntu.com precise-security/universe TranslationIndex       
Hit http://archive.ubuntu.com precise/main Translation-en                      
Hit http://archive.ubuntu.com precise/multiverse Translation-en                
Hit http://archive.ubuntu.com precise/restricted Translation-en                
Hit http://archive.ubuntu.com precise/universe Translation-en                  
Hit http://archive.ubuntu.com precise-updates/main Translation-en              
Hit http://archive.ubuntu.com precise-updates/multiverse Translation-en        
Ign http://archive.canonical.com precise/partner Translation-en_US             
Hit http://archive.ubuntu.com precise-updates/restricted Translation-en        
Hit http://archive.ubuntu.com precise-updates/universe Translation-en
Hit http://archive.ubuntu.com precise-backports/main Translation-en  
Hit http://archive.ubuntu.com precise-backports/multiverse Translation-en
Hit http://archive.ubuntu.com precise-backports/restricted Translation-en      
Ign http://dl.google.com stable/main Translation-en                            
Hit http://archive.ubuntu.com precise-backports/universe Translation-en        
Ign http://archive.canonical.com precise/partner Translation-en                
Hit http://archive.ubuntu.com precise-security/main Translation-en             
Hit http://archive.ubuntu.com precise-security/multiverse Translation-en
Hit http://archive.ubuntu.com precise-security/restricted Translation-en
Hit http://archive.ubuntu.com precise-security/universe Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US          
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://repo.steampowered.com precise/steam Translation-en_US
Ign http://repo.steampowered.com precise/steam Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Reading package lists... Done
balmung@Evermore-PC:~$

[fantab]

@Balmung4500 , if re-installing Ubuntu is an option then, reinstall. Almost all the possible fixes for the problem you are having have been provided to you in the thread. I suspect you have not followed the instructions to the letter. Anyways, we all learn.

Save yourself time and effort and reinstall Ubuntu. But before you do that BACK UP all your important DATA.

[Balmung4500]

I somehow fixed it idk how exactly

[fantab]

Try to remove all the faulty packages with:

sudo apt-get remove package1 package2 package3 4 5

or

sudo apt-get --purge package1 2 3 4 5

then

$ gksu nautilus /var/lib/dpkg/info

(This opens the File Manager with root privileges).

Locate the package folder/file openjdk-7-jre-headless and either Delete it or Move it to Trash. Close the File Manager.

From Terminal:

$ sudo apt-get clean  
$ sudo apt-get install -f  
$ sudo dpkg --configure -a 
$ sudo apt-get update
$ sudo apt-get upgrade

If this doesn't fix the problem then try removing the remaining packages; icedtea-7-jre-cacao icedtea-7-jre-jamvm openjdk-7-jre openjdk-7-jre-lib, with "gksu nautilus", as instructed above and rerun the above commands.

If the problem still persists then, you will also have to remove entries of the above packages from:

$ sudo cp /var/lib/dpgk/status /var/lib/dpkg/status.bak 
$ gksu gedit /var/lib/dpkg/status

Then rerun the above apt-get commands.

remove ALL the files that have mention of the above packages.

EDIT: I am glad you were able to fix your machine.
Now, install "Synaptic Package Manager"... IMO its a better than "Software Center".