My LCD just won't map 1 to 1!

[moaspled]

Hello everybody!

I have a 26' Toshiba, HD Ready (1366X768). I'm connecting it via VGA with my laptop.

The problem is that I simply cannot make the bloody LCD map 1 to 1 despite the right resolution!

I managed to force the video card to output 1366x768 using Powerstrip. (1360 and 1368 are also possible) Vertically, there is perfect pixel mapping (768), but horizontally not.
When displaying 1024X768, there is perfect pixel mapping on both dimensions (after setting 4:3 in the TV and getting huge black bands on the sides), so it is possible!
I thought the problem might me over/underscan, but playing around H-size, H-position and Phase didn't make it better. (I used the dedicated picture in "Nokia monitor tester" to tell if it's getting better or worse)
The TV doesn't have a lot of options I can set. It just has the ones mentioned above, and on "auto" it just stretches the image to fit the screen.
How can I not get 1:1 when the TV gets exactly the same number of pixels it can display? Could there be a problem with the geometry?

Any ideas? Remember, the problem is only with the H axis, the V one is perfect.

[edDV]

Hello everybody!

I have a 26' Toshiba, HD Ready (1366X768). I'm connecting it via VGA with my laptop.

The problem is that I simply cannot make the bloody LCD map 1 to 1 despite the right resolution!

I managed to force the video card to output 1366x768 using Powerstrip. (1360 and 1368 are also possible) Vertically, there is perfect pixel mapping (768), but horizontally not.
When displaying 1024X768, there is perfect pixel mapping on both dimensions (after setting 4:3 in the TV and getting huge black bands on the sides), so it is possible!
I thought the problem might me over/underscan, but playing around H-size, H-position and Phase didn't make it better. (I used the dedicated picture in "Nokia monitor tester" to tell if it's getting better or worse)
The TV doesn't have a lot of options I can set. It just has the ones mentioned above, and on "auto" it just stretches the image to fit the screen.

How can I not get 1:1 when the TV gets exactly the same number of pixels it can display? Could there be a problem with the geometry?

Any ideas? Remember, the problem is only with the H axis, the V one is perfect.

Why did you need to use powerstrip? What is your laptop's display chipset and native resolution?

Have you tried a different computer?

[moaspled]

I used Powerstrip because 1366X768 is not a standard PC resolution and I had to force it. I don't understand why you are asking me this things... Since the output of my graphic card (Intel GMA 950) is right, the problem must be the TV.

[edDV]

I used Powerstrip because 1366X768 is not a standard PC resolution and I had to force it. I don't understand why you are asking me this things... Since the output of my graphic card (Intel GMA 950) is right, the problem must be the TV.

Maybe not.

The Intel GMA 950 is capable of 1360x768 to DVI-D or VGA. Maybe your display driver is old.

Best to try another computer with that TV and/or verify your laptop settings work on a different 1366x768 monitor.

I just noticed you described the TV as "26' Toshiba, HD Ready (1366X768)". What is the model number and display technology?

[moaspled]

I also read somewhere that the horizontal resolution must be a multiple of 8, but 1366 just worked... And even if using 1360, I should have gotten 1:1 when making the image 6 pixels smaller on the TV.

I'll try connecting it with another PC tomorrow...

I checked and I have the latest Intel driver. The TV model is 26AV615D. What do you mean by display technology? If it's an LCD? Then yes, it is.