Trying to dual monitor / HDMI + VGA

[Boccob]

I have a Radeon XFX HD 6950 that connects (VGA Cable) to my main one, a tiny w1752 LG monitor,and it works fine. However, when I connect to my second monitor, a Samsung Syncmaster T240M using HDMI, it displays a black screen, even though it is being detected by Windows. I've tried selecting it as my main monitor, duplicating and all that but nothing changed. Any idea? Thanks.

 

[Britton30]

You might try connecting only the HDMI monitor and adding the VGA monitor after.

 

[Boccob]

I noticed I had an old cable connected to my second one, removed it and all it says now is "check cable signal", even though HDMI is connected. After this change I tried doing as you said but no changes from "check cable signal".

 

[Boccob]

Okay, my bad, I got it solved, I had it set to PC "channel" on this secondary TV-monitor, somehow that wasn't the right channel.
A quick question then: why does my mouse sensitivity feels changed when using 2 monitors? And is there anyway I can keep a Flash player fullscreen on a secondary screen? Whenever I select something on my main it will minimize the player.
Thanks!