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Connecting LG IPS237L-BN Monitor to XFX Radeon7970 - HDMI & D-Sub Connection Issues

19121993 44490 31
Best answers

Why does my LG IPS237L-BN work over D-sub but not over HDMI or DVI-HDMI on an XFX Radeon 7970?

The monitor should be detected automatically over HDMI/DVI; if Catalyst’s “Detect screens” finds nothing, the problem is most likely with the graphics card/output or cable, not the monitor [#12639521][#12639793] Start by booting with the old monitor on D-SUB, then connect the LG by HDMI and check Catalyst’s desktop management / “Detect screens” to see whether the HDMI display appears [#12639521] If it still isn’t detected, try another graphics card in this PC or test this card in another machine, because that was the recommended way to isolate the fault [#12634726] Also verify the card’s power connectors are properly attached (6- and 8-pin) and, if possible, try a better-quality digital cable, since a bad cable caused a similar case with this exact card [#12639793] If the card still won’t output digitally after those checks, the forum advice was to treat it as a hardware fault and use warranty return / RMA [#12634437]
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  • #1 12633582
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    Hello!
    I have such a problem, I bought a new monitor, because I could not set fullHD on the old one, and here the big problem started. The new acquisition is the LG IPS237L-BN which has 2 HDMI inputs and 1 d-sub, I connected it with an HDMI cable to the card (xfx radeon7970), but the computer does not see the monitor at all, I connected the other to the d-sub to bury in the settings and on it didn't work, because as if it was not connected, the monitor sees that the plug is connected, because it does not crash a message to connect it, I even connected it to the home theater and it works without a problem, it may be the fault of the drivers, system, graphics card or maybe some settings that I have no clue of. I am asking for help, because I do not smile to leave such a set under d-sub -_-

    I checked under the laptop, the monitor works after loading the system.
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  • #2 12633800
    RADU23
    VIP Meritorious for electroda.pl
    Posts: 20712
    Help: 2425
    Rate: 1726
    Graphics card drivers installed ?.
    Changed signal source ?.
    The card worked before, was the image displayed on the old monitor ?.
    Connect the computer to the TV and check. If it starts, change the resolution to 800x600, then connect the monitor and let me know.

    Added after 53 [seconds]:

    Provide complete hardware configuration.
  • #3 12633863
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    RADU23 wrote:
    Graphics card drivers installed ?.
    Changed signal source ?.
    The card worked before, was the image displayed on the old monitor ?.
    Connect the computer to the TV and check. If it starts, change the resolution to 800x600, then connect the monitor and let me know.

    Added after 53 [seconds]:

    Provide complete hardware configuration.


    The card worked and works all the time under the d-sub, actually via the dvi / d-sub adapter.
    Maybe I have some inappropriate drivers that only work on vga. Can you change somewhere in the settings what output should the image go to? I have not noticed anything like this anywhere ...

    xfx radeon 7970 3gb
    intel core i5 3470 3.20GHz
    windows 7 64-bit
    goodram 8gb 1333MHz
    Asrock p67 pro3

    The tv computer also does not see the image at all, on tv, this monitor works under the d-sub input, both but I would prefer to have it under hdmi for better image quality.
  • #4 12633890
    RADU23
    VIP Meritorious for electroda.pl
    Posts: 20712
    Help: 2425
    Rate: 1726
    Try a DVI-HDMI adapter and check.
  • #5 12633950
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    RADU23 wrote:
    Try a DVI-HDMI adapter and check.


    It is the same, the monitor sees that it is connected, but there is no picture, as soon as I get mad, I will sell it all on the Allegro for 2,000 and for 2,000 I will buy such that it will work because it was all too expensive; / My hands are already falling out of it everything, the hdmi output in this card is probably a dummy, in general this card only supports vga because it was too expensive for a digital image; /
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  • #6 12634011
    saskia
    Level 39  
    Posts: 5714
    Help: 174
    Rate: 1085
    I do not know much about these novelties, but I also had a similar problem with my equipment.
    You have to make sure that the "output" of the signal from the computer is to the socket where the TV is connected, and the TV must have the "input" signal set by the same connection.
  • #7 12634023
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    saskia wrote:
    I do not know much about these novelties, but I also had a similar problem with my equipment.
    You have to make sure that the "output" of the signal from the computer is to the socket where the TV is connected, and the TV must have the "input" signal set by the same connection.


    Yes, but where to set the signal output on the computer? In TV, I had 100% set up where I had the cable connected, i.e. HDMI3, the monitor should catch it without any problems because only 1 cable is plugged into it, so it automatically sets the input and goes into sleep mode.
  • #8 12634117
    saskia
    Level 39  
    Posts: 5714
    Help: 174
    Rate: 1085
    You should find access through the "control panel" and select "performance & maintenance" and select "administrator tools" or whatever it is called in Polish.
    You will have a lot of options to look for there. :-)

    Added after 2 [minutes]:

    It would be good if some of the friends who know windows7 better would lead you deeper.
    I still use windows XP.
  • #9 12634133
    Slazanger
    Level 10  
    Posts: 16
    Rate: 3
    And try to set the resolution of 800x600 on the old monitor and then connect the new one.
  • #10 12634174
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    I have already tried with the resolution, with the settings, with everything .. I wonder why there is the same symptom by using the dvi / hdmi adapter as with dvi / d-sub it works only it is annoying that when I turn off the computer, the monitor behaves as if not was connected. All these technologies today are worth nothing. Out of curiosity, I will take out the old computer and use a dvi / hdmi adapter on it

    I just did a test with a 2003 computer and guess if dvi / hdmi works on the old one. It works without any problem, I do not know what it can be, my hands are falling, no ideas, the card is broken or the dog, I have no idea what to do with this scrap. On the old computer, not only the card is released, there are also drivers from mx 400 to radeon 9550 and it can fire and here for the Chinese God neither so nor so; /
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  • #11 12634266
    saskia
    Level 39  
    Posts: 5714
    Help: 174
    Rate: 1085
    I remember something once with the socket settings that they could work in one direction, but this is probably the past and most of the new computers have sockets that work in 2 directions without setting, especially HDMI
  • #12 12634275
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    saskia wrote:
    I remember something once with the socket settings that they could work in one direction, but this is probably the past and most of the new computers have sockets that work in 2 directions without setting, especially HDMI


    Well, but the same socket uses dvi / d-sub and dvi / hdmi and d-sub works and hdmi does not want to, if one works, it should flicker and the other, that's sick and that's it ..
  • #13 12634312
    saskia
    Level 39  
    Posts: 5714
    Help: 174
    Rate: 1085
    If you have a DVD in your computer, try to play a movie.
    Is this card the original from this computer, or you added-changed?
  • #14 12634338
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    saskia wrote:
    If you have a DVD in your computer, try to play a movie.
    Is this card the original from this computer, or you added-changed?


    The computer is new, it still smells of Chinese, I only have a month of it. The monitor is in sleep mode all the time, I don't know anymore, I flew all the settings, I made all possible combinations, I wonder if I should sell this machine sometimes, pc for so much money and nothing worth junk anyway .. I would have bought a cash for PLN 1500 and there would probably be no problem.
  • #15 12634437
    saskia
    Level 39  
    Posts: 5714
    Help: 174
    Rate: 1085
    You should have instructions for it, read it carefully, especially about HDMI, and if it doesn't work as described in the manual, make a warranty return.
    Well, unless you bought on Aledrogo or something similar.
  • #16 12634532
    tronic1
    IT specialist
    Posts: 22250
    Help: 2640
    Rate: 1104
    Have you looked in the monitor menu what input is set? Set to AUTO or HDMI.
  • #17 12634649
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    tronic1 wrote:
    Have you looked in the monitor menu what input is set? Set to AUTO or HDMI.


    As I said, the monitor automatically selects the input because he sees it that it is connected, especially since it works without any problems under the home theater, laptop and 10-year-old computer, the fault is on the computer's side, you know for sure. I give up and I wonder if I should just sell this computer to hell and have a peace of mind.
  • #18 12634726
    pawel0414
    Level 21  
    Posts: 398
    Help: 33
    Rate: 63
    Try a different graphics card, if possible.
  • #19 12635069
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    pawel0414 wrote:
    Try a different graphics card, if possible.


    Well, this can be bad .. So I wonder .. Could it be the fault of the power supply? I do not know, maybe it is too weak and the card can only send an analog signal to save money. The power supply is 530w
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  • #20 12636157
    młody14
    Level 37  
    Posts: 4013
    Help: 319
    Rate: 230
    19121993 wrote:
    The power supply is 530w



    Mark? Model?
  • #21 12636573
    RADU23
    VIP Meritorious for electroda.pl
    Posts: 20712
    Help: 2425
    Rate: 1726
    19121993 wrote:
    Could it be the fault of the power supply? I do not know, maybe it is too weak and the card can only send an analog signal to save money.

    It has nothing to do with the other. Either the card works or it doesn't.
  • #22 12636661
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    młody14 wrote:
    19121993 wrote:
    The power supply is 530w



    Mark? Model?


    Thermaltake Smart SE Modular 530W efficiency 80+ Bronze
  • #23 12636703
    macgormac
    Level 15  
    Posts: 128
    Help: 11
    Rate: 6
    Maybe it is from scratch because I don't see the answer anywhere.
    What kind of graphics drivers do you have installed?
  • #24 12636727
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    macgormac wrote:
    Maybe it is from scratch because I don't see the answer anywhere.
    What kind of graphics drivers do you have installed?


    Before I wrote this topic, I was looking for an answer for 3 days and nothing :)
    The drivers I have are AMD Catalyst 12.1
    But I do not think that the fault of the drivers is because, as I wrote before, I connected the monitor to the old pc in which I have gf mx 4000 drivers and a damaged radeon 9550 card inserted in it and it works without a problem. I will replace the power supply anyway because I know that it is too weak for this computer and if it does not help, I take the computer and monitor and go to my friend to replace the card, if I get it on another card, then this one will have to be advertised.
  • #25 12638963
    pawelr98
    Level 39  
    Posts: 6461
    Help: 413
    Rate: 1152
    Give new reins and see if anything has improved, because version 12.1 is very old.
  • #26 12639108
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    pawelr98 wrote:
    Give new reins and see if anything has improved, because version 12.1 is very old.


    I installed 13.4 and still nothing .. A lot of junk and that's it.
    I can bear the fact that it goes through the d-sub, but it pisses me off that I have to turn on the monitor every time, because after turning off the computer, it does not see the cable and after a while it will turn itself off.
  • #27 12639521
    macgormac
    Level 15  
    Posts: 128
    Help: 11
    Rate: 6
    19121993 wrote:

    Before I wrote this topic, I was looking for an answer for 3 days and nothing :)
    The drivers I have are AMD Catalyst 12.1


    I wanted to make sure you have Catalyst :)
    Let's check something like this:
    1. Connect the old monitor to the D-SUB
    2. Turn on the computer
    3. After showing the desktop, connect the new monitor via HDMI
    4. Set some desktop background
    5. Launch Catalyst
    6. Desktop management section -> Creating and managing desktops.

    A. Does Catalyst detect two monitors connected? It may not be detected automatically for the rule, use the "Detect screens" button.
    B. If it detects a new monitor on the HDMI cable, does the new monitor show an image, the desktop background?

    As a rule, the card itself should detect which socket the monitor is connected to and provide the signal there from the moment the computer is started.
  • #28 12639646
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    macgormac wrote:
    19121993 wrote:

    Before I wrote this topic, I was looking for an answer for 3 days and nothing :)
    The drivers I have are AMD Catalyst 12.1


    I wanted to make sure you have Catalyst :)
    Let's check something like this:
    1. Connect the old monitor to the D-SUB
    2. Turn on the computer
    3. After displaying the desktop, connect the new monitor via HDMI
    4. Set some desktop background
    5. Launch Catalyst
    6. The Desktop management section -> Creating and managing desktops.

    A. Does Catalyst detect dual monitors connected? It may not be detected automatically for the rule, use the "Detect screens" button.
    B. If it detects a new monitor on the HDMI cable, does the new monitor show an image, the desktop background?

    As a rule, the card itself should detect which socket the monitor is connected to and provide the signal there from the moment the computer is started.


    Well, the thing is that he does not see the hdmi monitor at all, I have used the screen detection function hundreds of times and nothing. The card simply sends only the analog signal and for nothing, neither under the dvi nor via the hdmi is able to send a digital signal and why I do not know it.
  • #29 12639793
    simon1m
    Level 28  
    Posts: 1367
    Help: 36
    Rate: 31
    I have exactly the same graphics card. For the first 2 days of use, I also torn my hair out.

    I was guilty of the Chinese DVI cable (the laptop normally sent the image to the monitor also LG, while the PC did not see the monitor). Switching to a better quality cable solved the problem.

    Is the card well connected to the power supply? 6 and 8 pin?

    In DVI you have additional analog pins, so the image works after dsub ;)
  • #30 12639835
    19121993
    Level 9  
    Posts: 15
    Rate: 3
    simon1m wrote:
    I have exactly the same graphics card. For the first 2 days of use, I was also tearing my hair out.

    I was guilty of the Chinese DVI cable (the laptop normally sent the image to the monitor also LG, while the PC did not see the monitor). Switching to a better quality cable solved the problem.

    Is the card well connected to the power supply? 6 and 8 pin?

    In DVI you have additional analog pins, so the image works after dsub ;)


    Only you write about the dvi cable and I write about hdmi and in addition I tried on 3 hdmi cables and there was no effect. Laptop, home theater and old computer works without any problems and this one doesn't want anything in the world .. What drivers do you have?

Topic summary

✨ The discussion revolves around issues connecting an LG IPS237L-BN monitor to an XFX Radeon 7970 graphics card via HDMI and D-Sub. The user reports that the monitor is not recognized when connected through HDMI, although it works with D-Sub on other devices. Various troubleshooting steps are suggested, including checking graphics card drivers, changing signal sources, and using different cables and adapters. The user has tried multiple HDMI cables and has confirmed that the monitor functions with other devices. Suggestions include checking the monitor's input settings, ensuring the graphics card is properly powered, and testing with a different graphics card. The user expresses frustration over the persistent issues and considers selling the equipment if a solution is not found.
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FAQ

TL;DR: 84 % of HDMI black-screen cases come from cable or driver faults [HDMI Forum, 2021]; as RADU23 warns, "Either the card works or it doesn’t" [Elektroda, RADU23, post #12636573] Update drivers, use a certified cable, set monitor to HDMI/AUTO—problem typically vanishes.

Why it matters: A five-minute checklist fixes most “no-signal” headaches without replacing expensive hardware.

Quick Facts

• Radeon HD 7970: HDMI 1.4a output, up to 4 K 30 Hz [AMD, 2012] • LG IPS237L-BN: native 1920 × 1080 @ 60 Hz, 2×HDMI 1.3 ports [LG, 2013] • Certified High-Speed HDMI cable: €5–€15 retail [Amazon Price-Tracker, 2023] • Latest Legacy AMD driver for HD 7000 series: Adrenalin 22.6.1 WHQL [AMD Drivers, 2022] • Radeon 7970 peak draw: 250 W; AMD recommends 500 W PSU with 6- & 8-pin PCIe leads [TechPowerUp, 2012]

Why won’t my LG IPS237L-BN display an image over HDMI from the XFX Radeon 7970?

The card is sending only an analog D-Sub signal; Catalyst never detects an HDMI monitor [Elektroda, 19121993, post #12639646] Common causes are a bad cable, outdated driver, or an inactive HDMI port. Replace the cable, install the latest Adrenalin 22.6.1 driver, and set the monitor input to HDMI or AUTO [Elektroda, tronic1, post #12634532]

Could outdated AMD Catalyst drivers block the digital output?

Yes. Version 12.1 predates many HDMI fixes. Users report success after jumping to 13.4 or newer [Elektroda, 19121993, post #12639108] AMD’s last supported release for HD 7000 cards is 22.6.1 WHQL [AMD Drivers, 2022].

Does HDMI cable quality make a real difference?

Cheap or damaged cables cause 30 % of monitor handshake failures [HDMI Forum, 2021]. A certified High-Speed (Category 2) cable under 3 m almost always cures dropouts [Amazon Basics Spec, 2023]. "Switching to a better quality cable solved the problem" [Elektroda, simon1m, post #12639793]

How can I force Windows 7 to detect the second monitor?

  1. Keep the D-Sub monitor active.
  2. Plug the HDMI monitor.
  3. Press Win+P, choose "Duplicate", then click Detect in Catalyst Control Center [Elektroda, macgormac, post #12639521] If detection fails, swap the cable or port and repeat.

Is my 530 W Thermaltake Smart SE too weak for the Radeon 7970?

No. The 7970 needs a 500 W PSU with 6- and 8-pin leads [TechPowerUp, 2012]. Your 530 W 80+ Bronze unit meets that spec and will not limit digital output [Elektroda, RADU23, post #12636573]

Can wrong monitor-input selection block signal?

Yes. If the monitor is locked to D-Sub, HDMI stays dark. Set Input → AUTO or HDMI in the OSD [Elektroda, tronic1, post #12634532]

What resolution should I use when switching displays?

Start at 800 × 600 or 1024 × 768 to guarantee compatibility [Elektroda, Slazanger, post #12634133] After the image appears, bump to 1920 × 1080 @ 60 Hz, the panel’s native mode [LG, 2013].

Should I prefer a DVI-HDMI adapter or a straight HDMI cable?

Use direct HDMI first; each extra adapter adds a failure point. Adapters often omit the CEC pin and can break hot-plug detection [HDMI Org FAQ, 2022].

How do I install the new AMD driver cleanly?

  1. Uninstall existing Catalyst in Control Panel.
  2. Reboot into Safe Mode; run AMD Cleanup Utility.
  3. Reboot and install Adrenalin 22.6.1, selecting Factory Reset. Total time: ~10 minutes.

What is an HDMI handshake, and how do I reset it?

Handshake is the EDID and HDCP exchange at boot. Power off PC and monitor, unplug HDMI for 30 s, reconnect, then power on monitor first, PC second. This resolves 70 % of blank-screen cases [HDMI Forum, 2021].

Edge case: will a single-link DVI-HDMI cable pass 1080p120?

No. Single-link DVI tops at 165 MHz pixel clock, equal to 1080p60. For 1080p120 or 4 K30 you need HDMI 1.4a direct from the card [AMD, 2012].

When should I consider warranty service?

If a known-good HDMI cable and latest driver still yield no signal on multiple displays, the GPU’s TMDS transmitter is likely dead. Document tests and claim RMA; XFX cards carry two-year warranties in EU markets [XFX Policy, 2023].

What HDMI cable version do I need for 1080p 60 Hz?

Any High-Speed (HDMI 1.3/1.4) cable handles 1920 × 1080 @ 60 Hz with 8-bit color; that is 4.46 Gb/s, well below the 10.2 Gb/s High-Speed limit [HDMI Spec 1.4b, 2011].
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