Re: An iMac Screen Problem …..

Mike Bonner bonnmike at
Tue Jun 12 11:43:44 EDT 2012

Since you mentioned a second display, you might try a couple things.
Disconnect the second display long enough so that your mac has to
re-configure its settings. Might force it to reset the imac screen.

Then plug the external back in and wait for it to re-config things again.

Also might simply see if you can force the old screen to a different res,
wait a few seconds then set it back.

Without a mac I can't experiment, but.. Is it possible there is a virtual
res setting? (meaning a desktop bigger than the resolution of the display)
on the mac?  I've seen such setups where you can scroll around a larger
area than is currently being shown.

There can also be quirks as far as how dual display is set up, various
modes (stretch, mirror etc) where if your external monitor is a diff res
than the native and the things go wonky, the main screen can display things
based on the settings of the 2nd monitor (so if the 2nd is higher res,
things go weird and the native displays things positionally so that some
things leave the screen)

There is of course the other option, hardware failure.  Could be a popped
capacitor or who knows (not even close to my area of expertise)

Just read BVGs response, yep, same type of theory.

On Tue, Jun 12, 2012 at 9:31 AM, Francis Nugent Dixon <effendi at>wrote:

> Hi from "Here",
> This is ever-so-slightly a non LiveCode problem,
> but I know that a lot of you guys have Macs, so
> here we go :
> I have a two year old iMac 20 inch, flawless since
> I bought it. Today, my screen suddenly went haywire,
> as if I had changed screen resolution (which I didn't).
> 1 - I can no longer see Dock on the base of the screen
> 2 - The display flows over into my second monitor
> 3 - Everything on the screen is bigger (icons, etc)
> Now on previous monitors, we had controls to solve
> display problems, but on an iMac there are none.
> Screen resolution has remained unchanged : 1680 x 1050.
> Has anybody had any problems like this, and has a
> solution, or is my iMac dying ?
> - Francis
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