ATI Radeon X1270 and Xpress 1270 with HDMI out observations... - AVS Forum
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post #1 of 4 Old 02-04-2008, 04:45 AM - Thread Starter
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Hello,

I recently purchased 2 laptops over the holidays.
* Gateway T-1616
1.9 GHz Turion 64 X2 TL-58
1 GB RAM (upgraded to 2 GB)
160 GB hard drive
ATI Radeon Xpress 1270 (built-in HDMI)

* Gateway T-1625
2.0 GHz Turion 64 X2 TL-60
2 GB RAM
250 GB hard drive
ATI Radeon X1270 (built-in HDMI)

When I first bought the laptops, I was excited to hook them up to my 50" Samsung DLP 1080p HDTV (HL-S5087W) via HDMI.

However I found that trying to output to 1080p/i on either notebook caused the image to be unstable. The TV would show the image, but with alot of static, then would display "unsupported signal" messages. 720p worked okay though.

I was able to achieve 1080p on the TV via the VGA port.

Then in January 2008, ATI released Catalyst 8.1. With this, I found I was able to get stable 720p on the Samsung DLP, and 1080i was also stable. 1080p was still giving me snow, though.

I do like that the Catalyst 8.1 gives you options for handling TVs with overscan. My 1080p picture fits perfectly within the borders of the Samsung TV.


Just this past Saturday (right before the Superbowl), I bought a 40" Sony 1080p LCD TV (KDL-40v2500), and tried hooking the laptops up to it via HDMI.

I was happy that the notebooks could output 1080p to the Sony. However, I found that I cannot get the desktop to fit perfectly within the screen. Even after playing with the Sony TV's settings (setting Fit to Full-Pixel) and the Catalyst settings, either I see a black border around the desktop, or outer edge of the desktop is being cropped off.

Note that my Oppo DV-981HD fits just right on the Sony TV using 1080p and the Full-Pixel setting on the TV.


A few questions I have for the AVS community are....

1.) Has anyone had any luck getting the ATI Radeon X1270 or Xpress 1270 to output 1080p (rather than 1080i) to the Samsung DLPs via HDMI?

2.) Has anyone had luck getting these video cards to get their desktop to fit perfectly on the Sony v2500 LCD?

I chose these 2 laptops as my HTPC solution, as they are pretty quiet and have low power consumption. Oh yeah, and the HDMI outputs. They were the cheapest laptops I could find that had HDMI.


Thanks!
--Nakoruru--

Living Room AV:
50" Samsung 1080p DLP (HL-S5087w)
Samsung Duo HD Player (BD-UP5000)
Pioneer LD Player (CLD-1090)
Gateway T-1616 notebook w/ HDMI

Bedroom AV:
40" Sony 1080p LCD (KDL-40V2500)
Oppo DVD Player (DV-981HD)
Gateway T-1625 notebook w/ HDMI
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post #2 of 4 Old 05-28-2008, 01:00 PM
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I have the 1625 laptop as well with the same issue outputting 1080p. I have not tried 720p yet.

Also how did you upgrade the 1625 to Catalyst 8.1?
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post #3 of 4 Old 05-28-2008, 02:53 PM
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Can you not just go to AMD's website and download the latest (now 8.5) drivers?
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post #4 of 4 Old 05-17-2012, 06:35 PM - Thread Starter
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The only way I have found that I have been able to output a stable 1080 resolution HDMI signal to my TV is to use the ATI Control Center, and tell it to output 1080i30.

If I try using 1080p60, the picture flickers all the time.

I don't know if this is an issue with the Radeon 1270 itself, or due to lack of video memory, or a driver issue (I am using the latest drivers available for the 1270), but 1080i30 is the only way I can get my laptop to use 1920x1080 resolution on any 1080p TV I have tried connecting to.
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