Ubuntu software center not connecting to internet

[Friwise]

Hi all!!
I am running Ubuntu 11.10 for the last few days and everything was perfect until yesterday when my Ubuntu Software Center showed problems with connection to the internet.
Now, I cannot install any application because of that.
I have good wireless connection and other internet applications work. Moreover, when I disconnect (on purpose) from the internet I don't even have the option to install any application. When I am connected I have this option but after I push the install button it tells me that I shall check my internet connection.
Any suggestion?
Thanks in advance

[2F4U]

Does the installation in a terminal using apt-get work?

[Friwise]

I can normally install from terminal!

[Friwise]

Moreover, now I am connected through wire connection and still it shows me the same error message when I try to install anything from Ubuntu software center

[matt_symes]

Hi

What is the exact error message?

Open a terminal and type


software-centerTry to install some software. Post back an error messages from the terminal using copy and paste.

Kind regards

[Friwise]

software-center gave me this:

2011-10-19 09:19:37,346 - softwarecenter.ui.gtk3.em - INFO - EM's: 17 15 21
2011-10-19 09:19:38,149 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2011-10-19 09:19:38,225 - softwarecenter.ui.gtk3.utils - INFO - Softwarecenter style provider for ambiance Gtk theme: /usr/share/software-center/ui/gtk3/css/softwarecenter.css


Then I tried to install a software called calibre and got this:

2011-10-19 09:20:50,076 - softwarecenter.backend - ERROR - error in _on_trans_finished 'Σφάλμα: None
None

'
2011-10-19 09:20:54,126 - softwarecenter.backend - ERROR - error in _on_trans_finished 'Σφάλμα: Απαιτεί την εγκατάσταση μη-έμπιστων πακέτων
Η ενέργεια αυτή θα χρειαζόταν την εγκατάσταση πακέτων από μη-πιστοποιημένες πηγές.

calibre calibre-bin libchm1 libpodofo0.9.0 libqt4-help libqt4-scripttools libqt4-test libqtassistantclient4 python-beautifulsoup python-cherrypy3 python-cssutils python-cssutils-doc python-django python-django-tagging python-dnspython python-encutils python-lxml python-pyparsing python-qt4 python-routes python-sip python-webob'

[matt_symes]

Hi



Σφάλμα: Απαιτεί την εγκατάσταση μη-έμπιστων πακέτων
Η ενέργεια αυτή θα χρειαζόταν την εγκατάσταση πακέτων από μη-πιστοποιημένες πηγές.=>


Error: Requires the installation of non-trusted packages
This will need to install packages from non-certified sourcesFrom https://answers.launchpad.net/ubuntu/+source/software-center/+question/170791


Ian Ace (iaculallad) (https://launchpad.net/%7Eiaculallad) said on 2011-09-11: #3 System > Administration > Update Manager > Settings
On the Software Sources window, click on the Ubuntu Software tab. Under Downloadable from the Internet, put a check on Source Code.
HTH.


Scott Barras (sjbarras) (https://launchpad.net/%7Esjbarras) said on 2011-09-13: #5
Thanks Ian Ace, that solved my question.


Hopefully that will also work in 11.10

Kind regards

[Friwise]

In my laptop it Source Code was already checked.
So, the problem does not come from this.

P.S: All the options are checked. Should I only have Source Code checked?

Somebody from the ubuntu.gr forum helped me to solve this. The problem was solved by choosing Download from: Main Server

[xSkApOnEx]

*bUmP*

[supermatti]

Hi all!!
I am running Ubuntu 11.10 for the last few days and everything was perfect until yesterday when my Ubuntu Software Center showed problems with connection to the internet.
Now, I cannot install any application because of that.
I have good wireless connection and other internet applications work. Moreover, when I disconnect (on purpose) from the internet I don't even have the option to install any application. When I am connected I have this option but after I push the install button it tells me that I shall check my internet connection.
Any suggestion?
Thanks in advance


I can normally install from terminal!


In my laptop it Source Code was already checked.
So, the problem does not come from this.

P.S: All the options are checked. Should I only have Source Code checked?

Somebody from the ubuntu.gr forum helped me to solve this. The problem was solved by choosing Download from: Main Server

Error: Requires the installation of non-trusted packages
This will need to install packages from non-certified sources From https://answers.launchpad.net/ubuntu...uestion/170791 (https://answers.launchpad.net/ubuntu/+source/software-center/+question/170791)
Quote:
Ian Ace (iaculallad) (https://launchpad.net/%7Eiaculallad) said on 2011-09-11: #3 System > Administration > Update Manager > Settings
On the Software Sources window, click on the Ubuntu Software tab. Under Downloadable from the Internet, put a check on Source Code.
HTH.

i have the same problems, but couldn,t solve then as shown above by Ian Ace,
please, can somebody help me, i am new in ubuntu11.10, but know quiet well the 9.10


thanks a lot:KS

supermatti

pd: maybe it's important to mencion that i installed from a usb-drive, i ran upgrade, and i managed to actualize

[supermatti]

solved... with main server it works