FAQ
TL;DR: Fix “D‑SUB No signal” by using the GTX 1060’s output with the correct adapter—“There should be 4 small pins and 1 large pins for the analog.” That means DVI‑I to VGA, not DVI‑D, and don’t plug into the motherboard when a GTX 1060 is installed. [Elektroda, safbot1st, post #17022570]
Why it matters: This FAQ helps LG 19M38A‑B and MSI H110M PRO‑VD owners quickly restore display when using VGA/D‑Sub with a GTX 1060.
Quick Facts
- Correct analog DVI uses 4 small pins around the blade; passive DVI‑to‑VGA works only there. [Elektroda, safbot1st, post #17022406]
- With a GTX 1060 installed, the motherboard’s VGA is disabled; use the graphics card outputs. [Elektroda, safbot1st, post #17022570]
- In this setup, HDMI to a TV worked, confirming the PC and GPU output were fine. [Elektroda, michalw114, post #17019800]
- DVI‑D/HDMI to VGA needs an active converter; passive plugs will not work. [Elektroda, safbot1st, post #17022304]
- The LG 19M38A‑B and VGA cable tested OK when driven by a laptop’s D‑Sub. [Elektroda, michalw114, post #17022351]
How do I fix “D‑SUB No signal” on an LG 19M38A‑B with a GTX 1060?
Connect the monitor to the GTX 1060, not the motherboard. Use a DVI‑I to VGA adapter that has four pins around the flat blade. If your card only offers DVI‑D, a passive VGA adapter will not work at all. How‑To: 1. Identify the DVI type on the GPU. 2. Use a DVI‑I‑to‑VGA adapter. 3. Power on and select VGA input. [Elektroda, safbot1st, post #17022570]
How can I tell if my DVI port supports VGA via a simple adapter?
Look for four small holes around the flat blade on the DVI port. Those are the analog pins on DVI‑I. “There should be 4 small pins and 1 large pins for the analog.” If those holes are missing, it’s DVI‑D and cannot output VGA. [Elektroda, safbot1st, post #17022406]
Will a D‑Sub (VGA) to HDMI adapter work on a GTX 1060?
Yes, but only if it’s an active HDMI‑to‑VGA converter with electronics inside. Passive HDMI‑to‑VGA plugs will not convert the digital signal. The helper put it plainly: you need the “fluff” with a converter for this path. Verify the monitor works first using a VGA laptop. [Elektroda, safbot1st, post #17022304]
Why does the monitor show “No Signal” even before I connect the PC?
That message is normal when the monitor has power but no valid input. You’ll see “No Signal” with the VGA cable disconnected or attached to an inactive source. Confirm with a known‑good source to isolate the issue. A laptop’s VGA output is ideal for testing. [Elektroda, safbot1st, post #17022251]
Should I plug the LG 19M38A‑B into the MSI H110M PRO‑VD motherboard or the GTX 1060?
Use the GTX 1060’s video outputs. With a discrete GTX installed, the motherboard’s VGA output is disabled by default. Connecting to the board will yield no picture. The fix is simple: move the cable to the graphics card and use the proper adapter. [Elektroda, safbot1st, post #17022570]
How do I test if my VGA cable or monitor is bad?
Connect the LG 19M38A‑B and the same VGA cable to a laptop’s D‑Sub port. If the image appears, the monitor and cable are fine. That confirms the PC side or adapter choice is the cause. This exact test succeeded in the thread. [Elektroda, michalw114, post #17022351]
My GTX 1060 has DVI‑D Dual Link. What adapter do I need for a VGA‑only monitor?
Use an active DVI‑D‑to‑VGA converter. DVI‑D carries only digital signals, so passive VGA adapters cannot work. Before buying, confirm the monitor and VGA cable function using a laptop. Then place the active converter between the GPU and the VGA cable. [Elektroda, safbot1st, post #17022304]
HDMI to my TV works but VGA to the LG 19M38A‑B doesn’t. What does that prove?
It proves the PC boots and the GPU outputs video correctly. The issue lies in the analog path: wrong port, wrong adapter, or missing conversion. Focus on using the GTX’s outputs and the proper DVI‑I adapter or an active converter. [Elektroda, michalw114, post #17019800]
Does the power supply affect a “No Signal” video symptom here?
In this case, no. The system displayed video via HDMI to a TV, so power delivery was adequate. “No Signal” on VGA pointed to signal type and adapter choice. Address the video path first: port selection and proper analog support or conversion. [Elektroda, michalw114, post #17019800]
My DVI‑to‑VGA adapter is wide and won’t seat fully. Is that the problem?
Likely yes. If your GPU’s DVI port lacks the four analog holes, a VGA adapter won’t fit or function. You need an adapter that matches DVI‑I, not DVI‑D. Otherwise, use an active converter from a digital output to VGA. [Elektroda, safbot1st, post #17022570]
Edge case: Can I enable the motherboard’s VGA with a GTX 1060 installed?
By default, the board disables iGPU outputs when a discrete card is present. Expect no image from the motherboard’s VGA in that state. The practical path is to connect the monitor to the GTX 1060 and use correct conversion. [Elektroda, safbot1st, post #17022570]
What’s the simplest 3‑step path to a picture on this combo?
- Move the cable to the GTX 1060’s port. 2. If the GPU has DVI‑I, use a DVI‑I‑to‑VGA adapter; if DVI‑D only, use an active converter. 3. Select VGA input on the LG. This sequence fixed the forum case. [Elektroda, safbot1st, post #17022304]
