unmet dependencies

[eGelor]

Hello ppl,
i add-apt-repository ppa:bumblebee/stable
and try to install this app that is not compatible with ubuntu 12.04
the error is:

virtualgl-libs : Depends: libturbojpeg but it is not installed
when i give

sudo apt-get -f install
my system try to download 326Kb
and gives me the error
dpkg: error processing /var/cache/apt/archives/libturbojpeg_1.1.90+svn733-0ubuntu4_amd64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/libturbojpeg.so', which is also in package libjpeg-turbo62 1.1.90+svn702-0ubuntu1
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/libturbojpeg_1.1.90+svn733-0ubuntu4_amd64.deb

i delete this new repo from my list.
Please help me fix it. thank you

[papibe]

Hi eGelor.

Try this:

sudo apt-get autoclean

sudo apt-get autoremove

sudo apt-get clean

sudo apt-get update
Then try installing it again.

Regards.

[eGelor]

No nothing from the above worked.
sudo apt-get autoremove gives me the same error

The following packages have unmet dependencies:
virtualgl-libs : Depends: libturbojpeg but it is not installed


and sudo apt-get -f autoremove

dpkg: error processing /var/cache/apt/archives/libturbojpeg_1.1.90+svn733-0ubuntu4_amd64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/libturbojpeg.so', which is also in package libjpeg-turbo62 1.1.90+svn702-0ubuntu1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
No apport report written because MaxReports is reached already
Errors were encountered while processing:
/var/cache/apt/archives/libturbojpeg_1.1.90+svn733-0ubuntu4_amd64.deb


All this are my fault cause i try to install an app that is not compatible on 12.04. Sot the libturbojpeg tries to overwrite the original lib. Please help. I only want to stop the installation of virtualgl.
So i thing that i need to delete something, so the system will stop searching for libturbojpeg.
maybe in /var/cache/apt/archives

[eGelor]

ok
dpkg -r libjpeg-turbo62
fix my error and
apt-get -f remove
works ok.
Now updating my system.
thanks the live chat and jokerdino.

[eGelor]

For the history.
After that my nvidia crashed cause of virtualgl and bumblebee Optimus Nvidia support. remove it and reconfigure my nvidia 9200m fix the error. more than 2 hours now.