Windows Vista forum

General discussion

dual monitors

by jhcool1959 / May 12, 2009 8:31 AM PDT

I use my HDTV as a second monitor, using a HDMI cord laptop to HDTV.
The tv constantly flickers between web pages and changing of programs.
Is there a way to stop this? Using Vista Home.

Discussion is locked
You are posting a reply to: dual monitors
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: dual monitors
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 -
by Jimmy Greystone / May 13, 2009 12:00 AM PDT
In reply to: dual monitors

No, this is just one of the reasons it's not recommended to use a TV as a monitor unless it's for specific uses, like presentations or media playback.

TVs are not designed to hold still images like monitors are, and so you get issues like what you describe when the TV has to go and refresh a large portion of the screen at once. You normally don't notice this going on, because TV shows are just a series of still images presented in rapid succession to give the illusion of animation. So the screen is being refreshed approximately 30 times/sec which is fast enough to fool our brains into thinking it's a smooth, fluid, animation.

If you're going to use your TV as a monitor, do so only for specific purposes, not general use. It might also help if you have a video card that can specifically encode the signal for HDTVs, and give you a progressive scan signal. That basically doubles the number of screen refreshes per second, giving the impression of an even smoother animation. Not all video cards can do this, so don't be surprised if yours isn't one of them that can.

So to recap quickly: TVs are not monitors, and trying to use them as such is going to lead to disappointment.

Collapse -
what do you mean by 'flickers between'...
by ramarc / May 13, 2009 1:40 AM PDT
In reply to: dual monitors

...'changing of programs'. is the flickering when you switch mode from the laptop input to TV viewing?

Collapse -
by jeff_windows_team / May 13, 2009 4:37 AM PDT
In reply to: dual monitors

If you have a different HDMI cable try that and see if the flickering stops. If all is in working order you should be able to use an HDTV as a monitor.

If you could provide a bit more description of when the flickering occurs that would help too.

Windows Outreach Team

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

The Samsung RF23M8090SG

One of the best French door fridges we've tested

A good-looking fridge with useful features like an auto-filling water pitcher and a temperature-adjustable "FlexZone" drawer. It was a near-flawless performer in our cooling tests.