Mac OS forum

General discussion

External Monitor not working properly with Snow Leopard

by bgstreet57 / January 16, 2010 9:51 PM PST

Recently I installed the Snow Leopard OS on my Macbook Pro, previously I had 10.5 installed. However, now when I connect my Macbook to my flatscreen TV (Panasonic Plasma), using a mini display port cable to an HDMI cable, there's a black border around the edges of the picture.

Before the Snow Leopard upgrade I was able to view the entire screen area of the Plasma TV, without any borders. The only thing I've done differently since then is install Snow Leopard. Does anyone know how I can fill the screen with image without using the zoom option on the TV screen, as the zoom cuts off some image at the top and bottom?

This black frame around the image is driving me crazy, so any help or advice you can offer would be greatly appreciated.

thank you,

Discussion is locked
You are posting a reply to: External Monitor not working properly with Snow Leopard
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: External Monitor not working properly with Snow Leopard
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
Match the resolutions
by rnauth1418 / January 18, 2010 11:53 PM PST

In your display preference pane on the Mac, make sure that you set your resolution to the proper resolution of the screen. This should allow the image to stretch to the screen borders.

Collapse -
by bgstreet57 / January 19, 2010 5:42 AM PST
In reply to: Match the resolutions

Thanks for the advice, and it worked. One more question though. Before installing Snow Leopard I didn't need to change the screen resolution on the Mac, the image just automatically filled my Plasma TV screen. Why do I have to now change the resolution manually for TV viewing? Is it something to do with Snow Leopard?

Thanks again,

Collapse -
There might have been a couple things
by rnauth1418 / January 19, 2010 10:21 PM PST
In reply to: monitor

I remember vaguely that in Tiger there was a function to automatically scale for your tv size. But that could have been one reason. A second reason might be that the default setting might have lined up decently well with your television.

The computer is supposed to automatically receive resolution and refresh rate settings from most newer televisions. I don't understand why this did not happen.

Popular Forums
Computer Newbies 10,686 discussions
Computer Help 54,365 discussions
Laptops 21,181 discussions
Networking & Wireless 16,313 discussions
Phones 17,137 discussions
Security 31,287 discussions
TVs & Home Theaters 22,101 discussions
Windows 7 8,164 discussions
Windows 10 2,657 discussions


Help, my PC with Windows 10 won't shut down properly

Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?