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I have setup a dualscreen setup for my notebook with an ATI video card (ATI mobility radeon hd 5470) using Catalyst Control Center.
The monitor extends the desktop of the notebook's screen. This works great.
I am running on windows 7 and have set it up to not do anything when I close my laptop's lid (case) other than dim the notebook's display.
However, when I do close the lid (notebook's display), the second monitor suddenly changes and I believe it starts behaving as the primary monitor.. I do not want this to happen.
So, how do I setup my dualscreen setup so that it won't set the secondary monitor as the primary one when I close my laptop's lid?
UPDATE: this video shows exactly what my problem is: http://www.youtube.com/watch?v=Q1ygNHbqI2g
Out of curiosity, why do you want this behavior? Obviously if the internal screen is the primary you can't use it with the lid closed so this seems rather impractical. – Shinrai – 2011-03-08T15:12:56.263
@Shinrai because if I want to use the primary one I will open the lid again. At the moment it is VERY very very annoying because whenever I watch a movie on my secondary screen I just cannot close the lid of my laptop. I now added a bounty. – Tom – 2011-03-10T15:27:28.030
1@Tom - If you're always using the external, but only sometimes using the internal, shouldn't the external be set as primary? (You get better video rendering on the primary display anyway due to some artifacts in the way most video drivers for Windows are written.) – Shinrai – 2011-03-10T15:50:49.460
@Shinrai who says I am always using the external but only sometimes the internal? This is not the case. Please try answering the question, I really am not interested in changing my own behaviour. Thanks for the interest though. – Tom – 2011-03-10T16:32:42.620
1@Tom - You implied it. ;) To my knowledge this is dependent on your laptop and I'm not aware of any that won't do this; most of them are hardwired to disable the internal screen with the lid closed (like, as far as the operating system is concerned it's not even there). If you can still see it in Display Properties with the lid closed you MIGHT have a chance. I'm just suggesting examining your habits because there may not be a way to do this, period. – Shinrai – 2011-03-10T18:27:13.907
@Tom - Also, you might consider mentioning the exact notebook you have. – Shinrai – 2011-03-10T18:28:53.187
@Shinrai, alright that'd be rather weird though in my opinion. Let me give you an example. If you work on windows with two screens and multi task your workflow among the screens (like workstations in linux), you'll have a certain view on your second monitor. If you then decide that you only need this certain view for a while, it is natural and senseful to close the primary screen (the lid) as that one is not needed. However, what it then does is HIDE what you want to see and SHOW what you do not want to see (the primary screen on the secondary screen). I have an Acer Aspire 7741ZG. :) – Tom – 2011-03-10T22:29:35.520
2@Tom - Right, but when you power off a monitor the machine still thinks it's attached. Laptops are designed to make the operating system think the display vanished entirely because most people want the exact opposite of your desired behavior (that is to say, if the lid is closed they don't want any windows over there!). – Shinrai – 2011-03-10T22:32:24.437