Dual screen video display problem

[Joe Zeff]

On 05/26/2013 04:20 PM, Robin Laing wrote:
> During today's searches, I realized that I have not done a full look
> through the boot sequence to see when the screen changes from single to
> mirrored(cloned) from single screen.
>
> I will check dmesg closer tomorrow at work.

Grep is your friend, here, although you do need to know whether to look 
for mirrored or for clone.  You may want to give the same treatment to 
/var/log/boot.log while you're at it.