Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

544 posts

Ultimate Geek

Topic # 30609 15-Feb-2009 03:01
Send private message

From time to time, I like to take my PC downstairs to play some movies on the plasma.

Its a 1080i one, and plugging in via HMDI (HDMI output on card, not DVI converter).
Windows automatically selects 1280x768. If I try to select 1920x1080, it doesn't change. If I force it in the ATI drivers, it changes, but doesn't fill the screen correctly, I.E. it has black boarders all round, and doesn't look to scale.
I try to underscan it, but when the bottom and top reaches the edge of the screen, theres still slight boarders on the left and right, and doesn't look like its at 'native' res.

The TV is a Panasonic Viera, and it does do 1080i. The PS3 picks it up as that, and fills the screen properly. Also using the same HDMI cable as the PS3

I've tried setting the res under the HDMI settings of the ATI Advanced Control Panel, also trying different refresh rates, but all seems the same.

Anybody got any ideas?

Create new topic
27475 posts

Uber Geek
+1 received by user: 6939

Biddle Corp
Lifetime subscriber

  Reply # 195877 15-Feb-2009 08:36
Send private message

What model?

Is this a fullHD 1920x1080 model? Or just a 1280/1366x768 model?

Based upon what you've just descibed it's only a 720p model which is why the HDMI is automatically selecting 720p as the default resolution. It also explains why the TV is scaling the 1920 x 1080i that are you trying to feed it.

3646 posts

Uber Geek
+1 received by user: 731

Lifetime subscriber

  Reply # 195878 15-Feb-2009 08:56
Send private message

It certainly sounds like a 720p panel (1366x768 or 1024x768).  The specifications page of the owners manual should help.
When you use the ATI control panel you are selecting 1080/25, right?
I have a panasonic projector with a 720p native res, but components that do an automatic handshake such as a blu-ray player set 1080i every time.

Areas of Geek interest: Home Theatre, HTPC, Android Tablets & Phones, iProducts.

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Geekzone Live »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.