New system monitor problems

bobjmoran

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Feb 1, 2007
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I just built a new system last month-

ASRock Z170 Pro4S
MSI GeForce GTX 1050 Ti
Intel Core i7-6700K
ADATA Ultimate SU800 512GB 3D NAND 2.5 Inch SATA-III Internal Solid State Drive
G.SKILL Ripjaws V Series 16GB (2 x 8GB)
Seagate BarraCuda STBD3000100 3TB 7200 RPM 64MB Cache
Cable Matters Active DVI-D to VGA Male to Female Adapter
Windows 7 64bit Pro

I am having a problem with Nvidia detecting the native resolution of my monitor
(Philips 109b2 CRT). I fixed the hot swap problem with windows detecting the monitor by adding a 1K resistor between pins 14 and 16 on the DVI side of the active adapter.
(I also have a 32" TV hooked up to the output of the GTX 1050 Ti, which witch works fine.)

When I first booted after adding the 1K resistor I had to change the resolution on the Philips monitor from 1920x1280 to 1600x1200 (which is it's highest resolution) from the TV to get it to work.

It works fine after windows starts but will not display anything in BIOS (Running at 1920x1280 which my monitor does not support.( Confirmed with oscilloscope on The VGA pins ). If I unplug the DVI adapter BIOS displays properly on the TV.

The NVIDIA correctly identifies the monitor as a Philips 109b2 but the recommended resolution is 1920x1280, too high for the monitor

Is there anyway that I can cap the max resolution at 1600x1200 (max for the monitor) or 1024x768 for the Bios?.

My problem now is that my GTX 1050 Ti will not apply these settings until windows boots.

Old system in sig.
 
Solution
I got it to work. The two monitors that did work with the adapter had 5V on pin 5 of the VGA connector where the two monitors that did not work were ground on pin 5. I took out my 1K resistor in the DVI connector ( pins 14,16) and connected 5V to the VGA connector pin 5 after removing the ground from pin 5. It's odd that all the VGA pin out diagrams I can find say pin 5 is ground.
Adapters almost always add these kinds of issues, especially when going to VGA. A lot of theses issues are due to HDCP standards....You can force some settings via the driver but as for BIOS I think you are SOL. Unfortunately I recommend getting something newer that supports a modern interface such as Displayport or HDMI. It's OK, I miss CRT too, even if my desk does not.
 


Honestly I haven't used VGA in years, I initially ran into HDCP issues after getting an HD6850 back a few years and was not able to resolve the issue outside of replacing my monitor with one with HDMI, the adapter I tried flat out did not work. Really though I was quite willing to replace my aging Acer at the time so I did not press on with the attempt. As for your use of the CRT man I miss the image quality and colour, I had a nice Sony Trinitron 20" of the same resolution as your Philips. Outside of size and weight LCD was for the most part a step back, certainly for image quality. Are you able to access the BIOS via the television? Anyhow if you get it working please post the results here, not only am I curious myself but it could help others with a similar issue.
 

bobjmoran

Distinguished
Feb 1, 2007
66
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18,640
I got it to work. The two monitors that did work with the adapter had 5V on pin 5 of the VGA connector where the two monitors that did not work were ground on pin 5. I took out my 1K resistor in the DVI connector ( pins 14,16) and connected 5V to the VGA connector pin 5 after removing the ground from pin 5. It's odd that all the VGA pin out diagrams I can find say pin 5 is ground.
 
Solution