I have been playing with setting up my HTPC via DVI (Radeon 9800 4.5drivers) to a sony widescreen 1080i tube display.
In the ATI video settings the hdtv appears as a Flat Panel Display with a max capable resolution of 1920x1080. It is reading this information from the tv and even calls it 'SONY TV'.
I know my TV only supports a few modes but i can set any resolution and it scales it for me. My TV supports 720p which it will upscale to 1080i but i think the video card is scaling for me. If i set my desktop to 1280x720 and uncheck the 'scale video' checkbox in the Display/FPD tab my 1280x720 screen appears to be matted inside a 1920x1080 resolution.
I would like to see if my image quality looks better at 720 with the tv scaling (maybe lesser dvi bandwith or better scaler in tv), but i cant find out because it seems the video card is scaling up to 1080i no matter what. Weird though at 720x480p my tv appears to show a progressive image so i dont know if the video card stops scaling it at that resolution or not. I would really like to try out some higher progressive scan resolutions but they all get upconverted to 1080i and look bad interlaced.
Does anyone know what is going on here and whether its the TV or the video card or both causing this behavior?
In the ATI video settings the hdtv appears as a Flat Panel Display with a max capable resolution of 1920x1080. It is reading this information from the tv and even calls it 'SONY TV'.
I know my TV only supports a few modes but i can set any resolution and it scales it for me. My TV supports 720p which it will upscale to 1080i but i think the video card is scaling for me. If i set my desktop to 1280x720 and uncheck the 'scale video' checkbox in the Display/FPD tab my 1280x720 screen appears to be matted inside a 1920x1080 resolution.
I would like to see if my image quality looks better at 720 with the tv scaling (maybe lesser dvi bandwith or better scaler in tv), but i cant find out because it seems the video card is scaling up to 1080i no matter what. Weird though at 720x480p my tv appears to show a progressive image so i dont know if the video card stops scaling it at that resolution or not. I would really like to try out some higher progressive scan resolutions but they all get upconverted to 1080i and look bad interlaced.
Does anyone know what is going on here and whether its the TV or the video card or both causing this behavior?
