external display lcd tv using hdmi port

Hi,

I have a toshiba laptop. Below is the info on the display driver. Zorin runs fast on my system. The problem is using an external lcd tv through the hdmi port. I get the background image displayed on the tv but nothing else. I was running wallch to change the background. When I terminated it I received a message that was displayed on the tv but not the monitor. I have searched this forum and used google for a broader search. I have tried the upgrade and dist-upgrade command and also logged out then back in. All to no effect. I migrated from ubuntu which supported the external display to fedora which I never tested. I really like this zorin and would love to fix this problem. Thanks for your assistance with this matter.

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

I am including the ouput from the sources.list file.

# deb cdrom:[Ubuntu 13.04 _Raring Ringtail_ - Release i386 (20130424)]/ raring main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu raring main restricted
deb-src http://archive.ubuntu.com/ubuntu raring main restricted

## Major bug fix updates produced after the final release of the
## distribution.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu raring universe
deb-src http://archive.ubuntu.com/ubuntu raring universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu raring multiverse
deb-src http://archive.ubuntu.com/ubuntu raring multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu raring-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu raring-backports main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu raring-security main restricted
deb-src http://archive.ubuntu.com/ubuntu raring-security main restricted
deb http://archive.ubuntu.com/ubuntu raring-security universe
deb-src http://archive.ubuntu.com/ubuntu raring-security universe
deb http://archive.ubuntu.com/ubuntu raring-security multiverse
deb-src http://archive.ubuntu.com/ubuntu raring-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu raring partner
# deb-src http://archive.canonical.com/ubuntu raring partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu raring main
deb-src http://extras.ubuntu.com/ubuntu raring main

Hi,

you can safely ignore the warnings about 3rd party software as long as you trust the source!.

You must make sure that the PC is switched off but connected to the TV with a HDMI cable and that the TV is also switched off, then switch on the TV and then start your PC and see if that helps, you can check the settings in System Settings >Hardware > Displays > Detect Displays and see if that helps!.

Let us know how you get on.

Regards Wolfman