No 1366x768 resolution for my TV?

[smurof7neves]

Recently I was using the VGA output on my graphics card to connect to my TV. I was able to set it to 1366x768 (custom) and it looked fine on TV. Then I discovered that my PC had HDMI out. So I decided to use that.

This is when I ran into some problems. There is no option for 1366x768, and this time, I get a message: "Test failed. Custom resolution 1366x768 at 60Hz (32-bit) is not supported by your display." Well, sure it is! That's the actual resolution of my display!

The max size I have been able to set it to so far is 1280x720. But, for some reason, the TV cuts off the sides and I can't see the whole picture.

Also, I can't get the display connected to the mainboard to work, but this may be because I have a graphics card attached.

Is there any way to get this to work?

P.S. It's less than a year old. Panasonic TC-L32X1

 

[WalkerA WinTeam]

Hi smurof7neves (clever name btw )

Could you please elaborate on your System Specs? That will enable us to better assist you.

Cheers,

Walker
Windows Outreach Team

 

[smurof7neves]

thanks, Walker. BTW, I tried to get "smurofneves" but somebody already took it.

I have filled in the specs to help you and the rest of the community assist me.

 

[smurof7neves]

Not sure if anyone has a solution to this problem I'm having, but if anyone can help me, please respond

 

[LuzTeTT]

Hi smurof7neves,

What brand and model television do you have?
If you're using VGA, you can try to force the resolution. Try lower the refresh rate, adjust the flush methods, and interlaced modes.

Many LCD panels often advertise 1366x768 resolution, but won't run it over VGA. This is a limitation of the panel.
If you have DVI or HDMI, consider switching to those.
1280x720 (720P) is what your screen is designed to run (as it is marketed as a multimedia screen). You may be stuck with that resolution. If you can find an option to enable 1:1 pixel mapping, you should be okay to go.
Though, from what you have said, it is possible 1:1 pixel mapping is already enabled and it's just putting in the black borders to compensate for it's native resolution of 768P.

Let me know how you go.

 

[smurof7neves]

Hi smurof7neves,

What brand model television do you have?
If you're using VGA, you can try to force the resolution. Try lower the refresh rate, adjusted the flush methods, and interlaced modes.

Many LCD panels often advertise 1366x768 resolution, but won't run it over VGA. This is a limitation of the panel.
If you have DVI or HDMI, consider switching to those.
1280x720 (720P) is what your screen is designed to run (as it is marketed as a multimedia screen). You may be stuck with that resolution. If you can find an option to enable 1:1 pixel mapping, you should be okay to go.
Though, from what you have said, it is possible 1:1 pixel mapping is already enabled and it's just putting in the black borders to compensate for it's native resolution of 768P.

Let me know how you go.

I have used VGA and that works fine, but I wanted to use HDMI. HDMI is where I'm having the issue. Is there any way to run 1366x768 over HDMI?

 

[LuzTeTT]

Hi smurof7neves,

What brand model television do you have?
If you're using VGA, you can try to force the resolution. Try lower the refresh rate, adjusted the flush methods, and interlaced modes.

Many LCD panels often advertise 1366x768 resolution, but won't run it over VGA. This is a limitation of the panel.
If you have DVI or HDMI, consider switching to those.
1280x720 (720P) is what your screen is designed to run (as it is marketed as a multimedia screen). You may be stuck with that resolution. If you can find an option to enable 1:1 pixel mapping, you should be okay to go.
Though, from what you have said, it is possible 1:1 pixel mapping is already enabled and it's just putting in the black borders to compensate for it's native resolution of 768P.

Let me know how you go.

I have used VGA and that works fine, but I wanted to use HDMI. HDMI is where I'm having the issue. Is there any way to run 1366x768 over HDMI?

What brand/model LCD television do you have?
HDMI is a different story. It relies on the EDID, and most often the EDID will report the native resolution and the driver software will try it's best to match or at least keep in ratio of the native resolution.
What does it say your native resolution is in the NVIDIA control panel?

 

[smurof7neves]

Hi smurof7neves,

What brand model television do you have?
If you're using VGA, you can try to force the resolution. Try lower the refresh rate, adjusted the flush methods, and interlaced modes.

Many LCD panels often advertise 1366x768 resolution, but won't run it over VGA. This is a limitation of the panel.
If you have DVI or HDMI, consider switching to those.
1280x720 (720P) is what your screen is designed to run (as it is marketed as a multimedia screen). You may be stuck with that resolution. If you can find an option to enable 1:1 pixel mapping, you should be okay to go.
Though, from what you have said, it is possible 1:1 pixel mapping is already enabled and it's just putting in the black borders to compensate for it's native resolution of 768P.

Let me know how you go.

I have used VGA and that works fine, but I wanted to use HDMI. HDMI is where I'm having the issue. Is there any way to run 1366x768 over HDMI?

What brand/model LCD television do you have?
HDMI is a different story. It relies on the EDID, and most often the EDID will report the native resolution and the driver software will try it's best to match or at least keep in ratio of the native resolution.
What does it say your native resolution is in the NVIDIA control panel?

I think it's 1280x720

 

[LuzTeTT]

I have used VGA and that works fine, but I wanted to use HDMI. HDMI is where I'm having the issue. Is there any way to run 1366x768 over HDMI?

What brand/model LCD television do you have?
HDMI is a different story. It relies on the EDID, and most often the EDID will report the native resolution and the driver software will try it's best to match or at least keep in ratio of the native resolution.
What does it say your native resolution is in the NVIDIA control panel?

I think it's 1280x720

Then I'm afraid the only option is to use VGA for 1366x768. You shouldn't really notice a difference in quality at that resolution unless your panel has a bad controller or is lacking in quality for that input. If so, try adjusting phase and clock.
As far as your computer is concerned, your monitor can't support 1366x768, and it probably can't (over that input).
A 22"-32" 720P (or technically 768P) monitor will only (usually) ever report 720P over multimedia-based interfaces (i.e, HDMI). Even if it supports 1080P. This isn't a software issue, it is fault of the EDID (thus, the manufacturer of the screen), and often the only way to get around this is to buy a new monitor. That's why I was asking what make and model screen you have.

I have even seen a 50" 1080P Sony Bravia report it's native resolution as 1366x768, and not be able to accept 1920x1080 over the HDMI interface with a PC. This is just the way multimedia standards are designed. Several different types of signals go down a HDMI cable, and PCs just don't act as a multimedia device or gaming console.

If you had DVI, you would be able to try that, as it is designed to handle digital PC signals. Though it is very unlikely for a HDTV to have both DVI and HDMI.

Summary: Your screen may in fact have a native resolution of 1366x768, but it won't accept that resolution over HDMI(RGB), and probably not even YPbPr.

However... let's not conclude that just yet. What cable are you using to do this? A standard male-male HDMI cable? Or a DVI-HDMI adaptor?

 

[Maxxwire]

I had been running my 1366X768 resolution Bravia through VGA from my laptop and several weeks before I bought my HP HPE 270f desktop which has an ATI Radeon 5770 video card with HDMI I bought a Belkin Pure AV HDMI cable and looked forward to using it with my new desktop, but I ran into the exact same problem smurof7neves did because the standard for HDMI output is either 1280x720 or 1920x1080 and the 1280x720 through HDMI was very much overscanned and the boundaries of the picture were way outside of the boundaries of the screen.

The Radeon 5770 video card has an overscan/underscan option (4% underscan got the HDMI picture back down to 1366x768) as well as another feature that allows you to drag the desktop to the correct size, but both of these digital compensation methods produced such awful distortions in both pictures and text that I went back to VGA where the resolution is perfect right down to the pixel and the Bravia once again looks very close to how the Mac Pro and Apple Cinema 30 display in the main computer room looks.

~Maxx~

 

[smurof7neves]

okay. I guess there's nothing I can do. *disappointed* But thanks for your replies.

 

[cluberti]

Unfortunately, no. It sounds like the expected is happening over HDMI, and it's choosing a 720p resolution (1280x720 == 720p). You'll be stuck with VGA output (which doesn't have the EDID limitations), or using 720p.

 

[Maxxwire]

Unfortunately, no. You'll be stuck with VGA output.

I made my decision whether to go with digital HDMI or uncompressed analog VGA by comparing the picture they each delivered using an Apple Cinema 30 with DVI as a reference. After comparing how horribly overscanned the HDMI 720p looked and how distorted the digitally compensated 768p looked on my 32" 1366x768 Bravia I was quite pleased with how similar the 1366x768 uncompressed analog VGA was compared to the picture DVI delivered to the Apple Cinema 30.

That said I really don't feel 'stuck' with VGA because any signal analog or digital that can deliver a picture to my Bravia that looks virtually identical to the quality of the Apple Cinema 30 is quite easy for me to live with.

~Maxx~

 

[cale]

Found solution for Radeon series cards

Dealing with this 720p issue is kind of a nightmare. The fix that uses regedit and has you alter the Display1_DownscalingSuppored only works on Intel series GPUs. Don't bother wasting your till because you'll just get yourself mad trying to figure it out. I've got a Vizio TV and the it specifically states on their website that it supports native 1366x768 resolution. So then why doesn't it show up in the Display Resolution settings??? Its because of the GPU Scaling feature. This feature overrides the monitor's accepted resolution settings for Windows. To disable this, open up Catalyst (right click on desktop background and its the top icon. Its been renamed on APU systems to AMD VISION) and navigate to "My Digital Flat-Panels, then Properties(Digital Flat-Panel), You'll see a checkbox in the Image Scaling box; uncheck that and apply the settings. Now you should be able to change your display settings to 1280x768.... 1366x768 still isn't showing up but you can use apps that require 768p now. There is one caveat, GPU Scaling helps get rid of over-scanning, so you'll notice that there is some black around the corner of the screen. This is where your TV is under control of the situation. I had to set my TV to Wide Screen mode... you have to look in your TV manual or poke around the menus to find the settings. You might not even have to deal with it. Anyways, hope this helps.