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Windows 7: Force DVI/HDMI resolutions and refresh rates

02 Jan 2011   #250
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by jdbird17 View Post
thats what i dont understand, when i do that it says out of range/frequency.
There's been some confusion over the fact that Windows 7 now uses Electronic Industries Alliance (EIA-861B) TV-compatible timings. This explains it from the NTSC standpoint: Screen refresh rate in Windows 7 does not apply the user selected settings on monitors & TVs (that report specific TV compatible timings)

Even though the KB does not go into it, PAL and SECAM rates are also affected so your 100Hz is actually getting set to 100/1001*100Hz or ~99.9Hz by Windows 7 and the driver. See if you can set a custom rate of 100.1 or see this if you're an nVidia guy:

Advanced Timings

Here's a good explanation of where these weird timings came from: Frame+Rate+Follies.pdf




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02 Jan 2011   #251
jdbird17

Windows 7 64bit
 
 

I have no idea about what that all means. What do I need to do exactly?
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02 Jan 2011   #252
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by jdbird17 View Post
I have no idea about what that all means. What do I need to do exactly?
Look for the following page in Catalyst Control Center and set the controls as in the picture. No guarantee that it will work but it's worth a try.
Force DVI/HDMI resolutions and refresh rates-untitled.png


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02 Jan 2011   #253
jdbird17

Windows 7 64bit
 
 

What troubles me is that I do that and it works but still says I have only 85hz when I press the menu button on my monitor. The first picture is what happens when I check that box and and apply it to the resolution 1024x768.


Attached Images
Force DVI/HDMI resolutions and refresh rates-mon.png Force DVI/HDMI resolutions and refresh rates-mon2.png 
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03 Jan 2011   #254
jdbird17

Windows 7 64bit
 
 

However, when I try and apply 100hz in the drop down menu from this picture it goes out of range.


Attached Thumbnails
Force DVI/HDMI resolutions and refresh rates-untitled.png  
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03 Jan 2011   #255
baarod

El Capitan / Windows 10
 
 

Use the ATI control panel to do the resolution and frequency change. Do not involve the Windows control panel at all. I suspect a difference....
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03 Jan 2011   #256
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by jdbird17 View Post
What troubles me is that I do that and it works but still says I have only 85hz when I press the menu button on my monitor. The first picture is what happens when I check that box and and apply it to the resolution 1024x768.
You still need to set the resolution after doing that. It just sets the source for the resolution LIMIT not the resolution SETTING.
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26 Jan 2011   #257
chivoX

Windows 7 Ultimate x64
 
 

Hi guys, im having a problem with my TV an LG 32LF15R, i was using my MSI TWIn FROZR GTX 460 768 MB, conected to this tv using a DVI to HDMI converter wich came in the box with the Video Card. TV HDMI input and video card has the converter and an HMDI out.SO.

I was working with an 1920x1080i resolution. It worked flawlessly for about 4 or 5 months, and one day about a week ago i turned on my PC. And nothing all i get its a NO SIGNAL message and now my PC doesnt even detects my TV. I was able to transmit sound to the TV and Video without any problems.

Now cheking on the LG website i realized that this particular monitor supports 1366 x 768p HD resolution so im kinda lost now, why was i able to set higher resolutions if it sopposedly only supported 1366 x 768p ??.

So my pc is not detecting the TV at all i tried using a different cable, tried with the MIni HDMI, and both DVI ports in the back of the card and nothing. im knda sad here so if u could lend me a hand here that but be AWESOME.

and something else, my TV displayed always everything, im talking about the bios and everithing, it was detected when the pc booted.

my question here is if i can force a resolution/refresh rate so the TV is detected again ? is this possible ?
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27 Jan 2011   #258
chivoX

Windows 7 Ultimate x64
 
 

upppppppppppppp
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02 Feb 2011   #259
tintti

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by baarod View Post
Quote   Quote: Originally Posted by jdbird17 View Post
Hi, I just got the Samsung LCD SynyMaster 2233RZ 120hz. The monitor came with a DVI-DL link but my laptop that I want to connect it to does not support DVI. I went ahead and bought a DVI-D to HDMI Cable. It won't let me surpass 60hz when I try to change the refresh rate. I tried following this guide but it seems so confusing. Can anyone help?
That limitation is entirely imposed by your adapter. You should be able to override any mangled EDID information and choose the resolution and refresh rate you desire by following the instructions in this tutorial.
I have the exact same situation (laptop+HDMI->DL-DVI Cable+2233RZ); I can even run 100Hz for a minute at a time on the resolution I play my game at (640x480) but after 1 minute an error message saying "Not Optimum Mode, Recommended Mode 1680x1050" pops up on the monitor and the screen goes black.

Normally this monitor detects every resolution as 1680x1050 (EDID shows no other resolutions even listed as supported for this monitor) at whatever refresh rate it is you use, but I assume due to the HDMI cable mine shows up as 640x480 @ 100Hz.

I do however know it is possible since it works for one minute at a time and if I want I can simply alt tab after a minute and it will keep working for another minute and so on.

My question is; if I do this thing and change the EDID, will it change something on my COMPUTER or the actual MONITOR? If I change the EDID to say my monitor supports 640x480 @ 100Hz, would it think it's fine and stop showing me that "Not Optimum Mode" screen? If it does change the supported resolutions in the actual monitor, then I assume it would work, but if not; no go.

Cheers,
Tomi
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 Force DVI/HDMI resolutions and refresh rates




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