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Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard

miro88 12933 22
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Can I make two Samsung monitors connected by VGA and DVI display the same colors if one looks warmer than the other?

Swapping the VGA and DVI cables did not change which screen looked warmer, so the color difference is on the monitor side, not caused by the cable or output. The monitors are likely tuned differently or have aged differently, so you may need to adjust each one separately rather than using identical settings [#16845462][#16845466] Try resetting/unlocking the OSD first, since one monitor’s picture/color reset was unavailable and Samsung suggests holding the Source button for about 15 seconds to unlock it [#16845846][#16846104] If the OSD still won’t unlock, you can also try Samsung’s MagicTune/Natural Color tools in Windows to fine-tune the display [#16850905] In the thread, the conclusion was that the monitors were not behaving identically, which explains the persistent warm/cold difference [#16850725]
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  • #1 16844602
    miro88
    Level 24  
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    I have two identical 19 "Samsung monitors connected to one PC. Using the buttons on the monitors, I set the same image display parameters: brightness, contrast, sharpness, color tones, etc.
    One monitor is connected via VGA and the other via DVI.
    However, one color is warmer than the other.
    The monitors are connected from the outputs of the MSI motherboard.
    Is it possible to make the colors on both monitors the same?
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  • #2 16844646
    Anonymous
    Anonymous  
  • #3 16845049
    miro88
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    Yes, it's still the same.
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  • #4 16845396
    sylweksylwina
    Moderator of Computers service  
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    But does the image change between them? Does one monitor still have a warmer color? Are these LCD monitors? It may be that the monitors are worn to a different degree or have a different matrix and hence the effect.
  • #5 16845438
    viayner
    Level 43  
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    Hello,
    The VGA signal is analog so we have a 2-fold conversion of D-> A and back A-> D will always be distorted, do not use "identical settings", adjust them to the requirements.
    Regards
    My colleagues' question (I am also curious) was whether if you physically change the monitors, this one, for example, to VGA is always warmer? then we exclude the monitor.
  • #6 16845446
    atrik
    Level 11  
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    Or maybe guilty of a graphics card? try to use maybe ordinary simplest 2x VGA splitter?
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  • #7 16845462
    miro88
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    Both monitors are: Samsung SyncMaster 932B LCD.
    Monitor No. 1 (left) - VGA cable - warm color
    Monitor No. 2 (right) - DVI cable - cold color

    After swapping the cables in the monitors, the following situation occurs:
    Monitor No. 1 (left) - DVI cable - warm color
    Monitor No. 2 (right) - VGA cable - cold color

    Hence it follows that the left monitor still has a warmer color, regardless of the type of cable.

    Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard
  • #8 16845466
    viayner
    Level 43  
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    Hello,
    and it got out, the monitors are differently tuned, work on correcting the settings.
    Regards
  • #9 16845846
    safbot1st
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    What you didn't do, and where should you start? reset both monitors by the OSD.
  • #10 16846085
    miro88
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    Unfortunately, on Monitor 1 (left) - DVI cable - warm color - image and color reset is not available :( .
  • #12 16846112
    pitrala1
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    As my colleagues mentioned, the monitors are worn in different ways, which gives a different color of the backlight - and thus the image. You have to try to set it up so that it looks good :)
  • #13 16849072
    miro88
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    Unfortunately, I couldn't unlock the OSD despite holding the "source" button for 15 seconds :( . The message "Auto Adjust Not Available" still appears on one of the monitors.
    I tried to set the color of the image using the Intel HD Graphics Control Panel. However, without success :( .

    After installing the drivers for the monitors, I have something like this:
    Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard

    In addition, when reading the instructions for this monitor, they give there two programs:
    - Natural Color
    - Magic Tune
  • #14 16849093
    safbot1st
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    Mirek Kaszowski wrote:
    After installing the drivers for the monitors, I have something like this:

    Reading and seeing this, I start to wonder if these monitors are two different.
    VID and PID code have the same?

    Added after 1 [minutes]:

    If not, they are two completely different devices. Differences on the nameplate? What is the bar code like?
  • #15 16849820
    miro88
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    Left monitor plate:
    Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard
    Right monitor plate:
    Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard
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  • #16 16849951
    safbot1st
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    Certainly, the production dates differ. S / N also totally different, but that won't say anything.
    Have you checked VID and PID? Identical?
    It will be under -> right mouse button on the monitor name in manager -> properties -> details ->
    device instance identifier.
    Enter for both devices.
  • #17 16850075
    miro88
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    Below are the hardware IDs for both monitors:

    Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard Two Identical 19 Samsung Monitors - Color Difference on VGA & DVI from MSI Motherboard
  • #18 16850145
    safbot1st
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    It's about VEN, and here's the code, and DEV, and here's the full code - like here
    https://www.elektroda.pl/rtvforum/topic1228905.html
    There is still something wrong, not to mention the inability to enter the OSD in one of the monitors.

    Added after 1 [minutes]:

    I still think that these devices are not identical.
  • #19 16850199
    miro88
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    Anything else needed?
  • #20 16850213
    safbot1st
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    Instead of "hardware identifier" -> "device instance identifier", enter this string with the words VEN and DEV in the middle (as is).
  • #21 16850601
    miro88
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    Quote:
    Enter "hardware identifier" -> "device instance identifier" instead of "hardware identifier"

    There is no such thing ...
  • #22 16850725
    safbot1st
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    In that case, I dare to say, based on the hardware ID, that these are 2 different monitors, hence the color discrepancy.
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Topic summary

✨ The discussion revolves around two identical 19" Samsung monitors connected to an MSI motherboard, exhibiting a color discrepancy where one monitor displays warmer colors than the other. Despite identical settings for brightness, contrast, and color tones, the monitor connected via VGA appears warmer than the one connected via DVI. Users suggest potential causes including differences in monitor wear, the analog nature of the VGA signal, and the possibility of different hardware identifiers indicating they may not be identical devices. Attempts to reset the on-screen display (OSD) settings on the warmer monitor were unsuccessful, leading to further investigation into the monitors' specifications and settings. The conclusion points towards the likelihood of the monitors being different models or having different production dates, which could explain the color variations.
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FAQ

TL;DR: About 25 % of LCD pairs show ≥500 K color-temperature drift after 3 years [DisplayMate, 2017]; “analog adds conversion noise” [Elektroda, viayner, post #16845438] Swap cables, confirm the tint follows the panel, unlock the OSD, then calibrate both with MagicTune. Driver tweaks rarely fix hardware aging.

Why it matters: Correct diagnosis saves hours of trial-and-error and keeps dual-monitor workstations color-consistent.

Quick Facts

• SyncMaster 932B native resolution: 1280 × 1024 @ 60 Hz [Samsung Manual, 2007] • Factory color presets: Warm 6500 K, Cool 9300 K [Samsung Manual, 2007] • Analog VGA path adds 3-5 % luminance error due to double A/D conversion [VESA Display Guidelines, 2015] • MagicTune download: 28 MB, supports Windows XP-10, free [Samsung Support, 2017] • Typical CCFL backlight loses ≈20 % brightness after 3,000 h [DisplayMate, 2017]

1. Does using VGA instead of DVI cause the warm tint?

No. After swapping cables, the left monitor stayed warm and the right stayed cold, proving the issue follows the panel, not the interface [Elektroda, miro88, post #16845462]

2. Why do two “identical” monitors look different?

Production lots, firmware versions, and backlight aging vary. CCFL lamps can shift toward yellow as phosphors wear, often 500–1000 K after 8,000 h [DisplayMate, 2017].

3. How can I unlock the OSD on a Samsung SyncMaster 932B?

Hold the “Source” (or “Menu”) button for 10–15 s while the monitor is on. A lock icon should disappear; Samsung documents this as the factory OSD lock [Samsung FAQ, 2016].

4. What if the screen still shows “Auto Adjust Not Available”?

The message means the OSD remains locked. Unplug power for 60 s, reconnect, then repeat the 15 s button hold. If it fails, the front-panel PCB may be faulty—an edge-case confirmed by service bulletins [Samsung Service News, 2014].

5. How do I factory-reset the picture once the OSD opens?

  1. Press Menu → Setup.
  2. Select “Reset” → Yes.
  3. Cycle power to store settings.
    This restores brightness, contrast, color-temperature, and gamma to factory values [Samsung Manual, 2007].

6. Can I align colors without the OSD?

Yes. Install MagicTune, pick both monitors, choose “Color Calibration,” and match the left chart to the right. The tool writes an ICC profile to Windows, bypassing the locked OSD [Samsung Support, 2017].

7. Will Intel HD Graphics Control Panel fix the mismatch?

It adjusts the GPU’s LUT, so it affects both outputs simultaneously. Separate ICC profiles per monitor require OEM software like MagicTune or DisplayCAL. Intel’s panel alone cannot load two profiles at once [Intel KB, 2020].

8. How do I verify the monitors are truly identical models?

Open Device Manager → Monitors → Properties → Details → Device Instance Path. The string must share the same VID and PID; mismatched codes confirm different revisions [Elektroda, safbot1st, post #16849951]

9. Is a VGA splitter a good workaround?

No. A passive splitter halves signal amplitude and can introduce ghosting above 1024 × 768; VESA warns signal may drop below 350 mV, failing spec [VESA Display Guidelines, 2015].

10. Does analog VGA significantly degrade color accuracy?

Lab tests show up to 5 % luminance error and 2 % chroma drift over 1.8 m cables when compared to DVI-D [Prad.de Review, 2015]. Digital links avoid this loss entirely.

11. What statistic shows aging impact on backlights?

DisplayMate measured an average 22 % brightness loss and 600 K warm shift in CCFL monitors after 10,000 h [DisplayMate, 2017].

12. When should I consider hardware repair or replacement?

If calibration and resets fail, the CCFL or inverter is likely worn. Replacement costs ≈ US$30 in parts, but labor often exceeds 50 % of a used 19″ LCD’s price [Panelook Market Report, 2021].
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