Ubuntu – Bootloader location

My problem was fixed. at least for "VLC" and "unity-tweak-tool" programs.

But can not fixed for some programs like "Foxit Reader PDF". since its installation is manually. ("Foxit reader" crashed and closed when highlighting text or doing any comment).

The problem was "I did not use aptitude command correctly."

the detail is:

first run this in terminal (notice: you may need to install "aptitude" package sudo apt-get install aptitude)

sudo aptitude install vlc

after a while it asked:

Keep the following packages at their current version:
    1)     libgles1-mesa [Not Installed]                      
    2)     vlc [Not Installed]                                
    3)     vlc-plugin-notify [Not Installed]                  
    4)     vlc-plugin-samba [Not Installed]                   

    Accept this solution? [Y/n/q/?] n

answered to it by n (No)

then it asked:

Remove the following packages:                                            
    1)      libgl1-mesa-glx:i386                                                    
    2)      libglu1-mesa:i386                                                       
    3)      wine-devel                                                              
    4)      wine-devel-i386:i386                                                    
    5)      wine1.4                                                                 
    6)      wine1.4-amd64                                                           
    7)      winehq-devel                                                            

 Downgrade the following packages:                                         
    8)      libgl1-mesa-glx [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xenia
    9)      libglapi-mesa [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xenial)
    10)     libglapi-mesa:i386 [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xe
    11)     libgles2-mesa [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xenial)
    12)     libosmesa6 [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xenial)]  
    13)     libosmesa6:i386 [17.0.7-0ubuntu0.16.04.2 (now) -> 11.2.0-1ubuntu2 (xenia
    14)     libvlccore8 [2.2.2-5ubuntu0.16.04.4 (now) -> 2.2.2-5 (xenial)]          
    15)     vlc-data [2.2.2-5ubuntu0.16.04.4 (now) -> 2.2.2-5 (xenial)]             


    Accept this solution? [Y/n/q/?] y

answer to it by y (yes)

then asked:

The following packages will be DOWNGRADED:
  libgl1-mesa-glx libglapi-mesa libglapi-mesa:i386 libgles2-mesa libosmesa6 
  libosmesa6:i386 libvlccore8 vlc-data 
The following NEW packages will be installed:
  libgles1-mesa{a} libqt5x11extras5{a} vlc vlc-nox{a} vlc-plugin-notify{a} 
  vlc-plugin-samba{a} 
The following packages will be REMOVED:
  libgl1-mesa-glx:i386{a} libglu1-mesa:i386{a} wine-devel{a} 
  wine-devel-i386:i386{a} wine1.4{a} wine1.4-amd64{a} winehq-devel{a} 
0 packages upgraded, 6 newly installed, 8 downgraded, 7 to remove and 42     not upgraded.
Need to get 6,395 kB/12.8 MB of archives. After unpacking 168 MB will be freed.
Do you want to continue? [Y/n/?] y

answer y again.

after this, problem was fixed and the VLC was installed correctly.

I hope, This be helpful for others, too.

Thanks for you attention

It seems that you do not have universe repository (for libatlas-base-dev). LAPACK and BLAS are in main. You should have both repositories enabled.

Try to add the repositories with

sudo add-apt-repository universe
sudo add-apt-repository main
sudo apt-get update 

And then install needed packages with

sudo apt-get install libatlas-base-dev liblapack-dev libblas-dev