I use a the DVI-HDMI adapter to connect to my TV. The problem is after I upgrade to Ubuntu 12.10 that the Display doesn not detect correctly the second screen. After connecting the cable it connects to the TV but after a second the monitor is disconnected. This thing repeats several times until, if lucky, it gets connected. Initially I thought it was the cable but it works under windows, and it takes the same time every time it disconnects, as it was running a process and then rejects the configuration and disconnects.
First I tried installing Nvidia proprietary drivers, having tons of problems with the laptop's screen configuration I removed them. After reading I found that I have to install Bumblebee to use the display card on laptops, so I did installed it. It has never really worked since upgrades. As I said, it works randomly. I have also reinstalled(reinstall or purge and install) bumblebee several times with no improvement.
At the moment the file xorg.conf is empty, this configuration works. I have tried writing several configurations here but it only makes the display look small and without the side bars. Also it crashes and doesn't solves any problem
This is the result of using xrandr:
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1360x768 59.8 60.0
800x600 60.3 56.2
VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis)e here
As you can see the computer also has HDMI that I would love to use as well, any information on this and on how to use the DVI port properly would be really appreciated.