After upgrading from 10.04 LTS to 12.04 LTS my Xorg.conf is reduced to only just this...

Section "Monitor"
Identifier "Monitor0"
HorizSync 30-82
VertRefresh 50-75
EndSection

Section "Device"
Identifier "Device0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
EndSection

...and is preventing this...

sudo apt-get install -f

...from working to fix some other broken packages because the broken ones are dependent on Xorg. Or so reports the text in the CLI.

How do I address that please?

The monitor which I have is an HP 2159m since I'm sure that's important. Things were mostly fine before I went for the update from 10.04 LTS to 12.04 LTS, all except for Handbrake, which had stopped working right.