HDMI 2.0 to DisplayPort 1.2 ?

The last we heard from you is that you were still trying to find an adapter.

Archer333 has the same LG31MU97 display. He tried the SIIG and a PS4 Pro and it didn't work. I told him to do some tests with a PC. He hasn't replied since. Maybe you can do the tests. In any case, if you get the SIIG adapter and it doesn't work, then you may need to contact their tech support to get a firmware update.

The support told me about the update, and i updated the device but it still does not work for me.

Did the four EDID's of the adapter change at all? Do any of the EDID's mention 533 MHz? Maybe you need a firmware with an EDID that has a 533 MHz timing. Do they know what the update actually changes? Do they have a firmware bug list?

SIIG new update firmware
test
4k ps4 pro.
new update  lg 31mu97  IS NOT work
.
new update firmware
Samsung U32D970 
test ps4 pro 4k
change
hdcp1.4  to hdcp 2.2.

Good to know they fixed the HDCP 2.2 issue.

The firmware update instructions seem to have a mistake where button #6 is the same as button #2 when it should probably be the next button down.

I'm waiting for a reply from optomedia before I try this update (to make sure they use the same updater).

For my CMV-535, clicking the Switch buttons changes the USB product name from "HDMI2.0" (vendorID/productID/Vendor 0x5566/0x5566/Pana) to "USB-Serial Controller D" (0x67b/0x2303/Prolific Technology Inc.) to "WPM USB" (0x416/0xa316/NUVOTON).

Another interesting thing: The screen shots in the SIIG and gofanco firmware update instructions have the model number CV-524 that was mentioned previously before (advertised by gomax) and which optomedia says is an earlier version of their CMV-535. I'm not sure which Taiwan company is the original manufacturer. I don't know if the CV-524, SIIG/gofanco, and CMV-535 can all use the same firmware. I'm still waiting to hear back from optomedia about their firmware update.

Wow, I was not expecting them to provide a firmware update that enables HDCP 2.2. Even better, this firmware update seems to have much better support of auto framerate/resolution switching! On the original firmware, the device really struggled with resolutions and framerates outside of that defined on the currently selected resolution from the edid switch. If it did switch, you'd be generally staring at a black screen for like ~10 seconds while it figured out what the hell was going it. It's all instant now -- no issues automatically switching resolution and framerate based on video source. This device is basically perfect for me now!

Well done to the devs behind the firmware update.

I believe that the reason why some of us are not able to get their converters working (no matter which manufacturer) is that they all operating with 594Mhz in 4k60Hz mode, so our monitors (including mine - Benq bl3201pt) can not output the signal from converter, because they operate using 533Mhz pixel clock as max for 4k60Hz. Of course we can manually adjust pixel clock from 533 to 594 on our PC, but these settings only works when connecting monitor directly to PC. When connected through converter these settings are useless due to 
Also, I've updated my CMV-535 with firmware from CIIG, so they are compatible. And as I expected it didn't help to get the signal. I'm still getting only 1080p signal (from PC and from PS4 Pro) on my screen using converter.  I assume that this is because for 1080p the lower pixel clock is required. I suggest to ask the devs to make firmware which will convert 594Mhz to 533Mhz :) in 4k60hz mode of converter.

Hey neGYtn, I also have the Philips BDM4065UC, and it's hooked to an xbox one x. To my understanding you bought https://www.amazon.com/r/dp/B07C39QBSF and updated the firmware. Is there another adapter that I need or anything else that I should know?
Thanks

Hi harel, that is the exact adapter I bought, and yes I did update the firmware (downloaded from SIIG's website). I have tested on Linux, Android and the PS4 Pro, and all are working at 4k60hz. I do not own nor know anybody that owns an Xbox One X, so unfortunately I cannot test it, but at this point i'd day it's pretty safe to assume that it will work without any issues. No other adapters are needed.

Hey again neGYtn, finally received the adapter. It's taking a very long time to update the firmware, may I ask how long it took?

It only takes a few seconds. There are three parts to the firmware. Each one is done separately according to the instructions provided.

Thanks for the quick reply.  I had to set it to COM 6 in the second and third part in order for it work. I can confirm it working with the Philips BDM4065UC hooked to an Xbox One X. Thank you all.

I believe the problem is with the converter, and not the display.

I don't think the TMDS clock is the problem. As I stated before, the TMDS clock mentioned in the output of moninfo.exe has a bug where it shows a default max TMDS clock of 165 MHz when the HDMI VSDB does not have enough bytes to actually specify a max TMDS clock.

I looked at the EDID of your BenQ BL3201PT again, trying to figure out where the 178 MHz might be coming from. The CE video identifier (VIC) that is marked as Native is 1920x1080p at 60 Hz. This has a CVT or GTF pixel clock of approximately 173 MHz (5 less than 178). Maybe that's a coincidence, because VIC #16 is supposed to be 148.5 MHz (CEA/EIA-861, not any of GTF, CVT, and CVT-RB; the latest standard is called CTA-861-G).

Did you test a direct DisplayPort (without converter) connection to the BenQ BL3201PT with the same  resolutions and timings? This will prove that the limitation is with the converter and not your display. This problem is different than the 533/594 MHz problem that other displays have (because you're trying 2560 x 1440), but your display may have that problem as well if your display can't do 3840 x 2160 594 MHz without the converter).

I was able to do 2560 x 1440 up to 73 Hz (296 MHz) using the CMV-535 with Dell P2415Q. 74 Hz did not work (300 MHz). Using a direct DisplayPort connection, I can go up to 86 Hz, 350.81 MHz (but not 87 Hz, 355.06 MHz) which exceeds my display's max refresh rate of 76 Hz. I'm not sure why they differ. I previously reported my 3840 x 2160 tests where all refresh rates from 30 to 60 Hz worked with a direct DisplayPort connection, but the converter couldn't do the range between 35Hz and 44Hz (but did the ranges 30 to 34 and 45 to 60Hz). Very strange.

Joe, thanks for commentaries.
I've tested what you suggested:
Max reachable frequency when connected PC directly to monitor's DP at 2560x1440 resolution- 85Hz, 342.40Mhz. As your monitor, seems that mine also have limitation of 85Hz.
3860x2160 60Hz, 594Mhz also worked without converter.
Agree with you- the problem indeed is in converter. I'm going to google 178Mhz (or 177) limitation problem.

FYI
After update of my Optomedia CMV-535 converter with CIIG's version of firmware I get the following modelines in converter's EDID (mode 4k60hz):
1."3840x2160" 533,250 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync
2."3840x2160" 594,000 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

If I'm not mistaken, before the firmware update there were the following modelines (at least in Optomedia's version of converter):
1."3840x2160" 594,000 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync
2."1920x1080" 148,500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync

I don't know which modelines the initial firmware of CIIG's converter is contained, but maybe this firmware will solve 533/594 MHz problem that some of us have.

I think it would be better if they put the 533 in a different EDID than the one containing 594 - like maybe into the one containing only up 1080p.

You have a GTX 1080 reference card so there should be nothing wrong with your HDMI 2.0 port, and you've already tested that with 5xx+ MHz.

I've looked at the firmware updates, and converted the hex files to binary files. The main binary seems to have the EDID's but there is some unknown compression where duplicate groups of bytes seem to occur only once so you need to know how to decompress it before you can edit it. I think the converter's USB serial connection has diagnostics that could be informative, but we don't have the software to use it. There are many diagnostic strings in the HDMI and DisplayPort parts of the firmware. I have a terminal program that works with USB serial devices, but you need the commands to enable the communication. All I can get is repeated ; or = at 57600 bps (I'm not even sure if that's the correct speed).

I've received the firmware update from optomedia. It is the 0608 version (June 8), identical to the gofanco and SIIG update (except the instructions are in a pdf instead of an excel file). They also gave me the 0312 version (March 12). I haven't noticed any improvements since I haven't encountered the problems others were having (my Dell supports 594, and I don't have an HDCP 2.2 source to test).

They told me about the change ARTA found with the 3840 x 2160 60Hz EDID, where they added the 533 as a preferred timing and 594 as the second timing. I've confirmed that the EDID is now as ARTA described. The three other EDID's have changed slightly or not at all.

Archer333 said the update didn't work with the LG 31MU97. Maybe the 533.25 is not close enough to the LG's 533.28 (not just the pixel clock, but also all the other parameters)? I've suggested to optomedia that it would be better if the 533.25 MHz was in a separate EDID than the 594 to be sure the game console doesn't choose the 594 timing. I've also suggested that they make the EDID editable.

"Serial Port Monitor" shows the COM commands for updating the firmware of the DisplayPort and HDMI ICs. I couldn't get USBTrace to look at the HID commands for updating the firmware of the main device because you have to power cycle the adapter.

Update to this: Turns out I'm just an idiot, lol.
I just needed to set the audio settings on my device to stereo and I was able to receive audio through the 3.5mm audio port on the converter. Guess I'm just too used to my tv doing all that automatically.

SIIG support was super helpful this time, however. Probably the best support service I've ever experienced. Props to them for taking the time to help my stupid ass out.

The BL3200PT is only 2560 x 1440, so a cheaper HDMI 1.4 to DisplayPort adapter will be much less expensive and still get you full refresh rate (I'm not sure about HDCP support).

ARTA was not able to get a CMV-535 adapter (similar to the SIIG converter as both have the same firmware so they both probably use the same hardware) to work with a BLP3201PT at more than 2560 x 1440 @ 44 Hz but they are very different displays (the 3201PT is 3840 x 2160).

That G-SYNC comment in the SIIG specs is new. G-SYNC monitors can work with non-Nvidia DisplayPort outputs, so there's no reason why a G-SYNC monitor can't work with this converter. Can you get full 4K 60 Hz from Intel or AMD graphics?

The term "due to mismatched timings" contains no information. Why can't they make the timing match? The converter supports almost a continuous range of resolutions and refresh rates. I have discovered a range of refresh rates that inexplicably don't work at 3840x2160 (in the 35Hz to 44Hz range) but I had no problem with 533MHz 60Hz timing. I don't know if the DisplayPort output timing matches exactly the HDMI input timing of the converter because the display does not report pixel clock, only horizontal and vertical refresh rate.

The updated firmware (there's only one so far) for the SIIG has a EDID with 533 MHz as primary timing, and 594 MHz as secondary, but I don't know if the PS4 Pro will choose the primary which is why I suggested that they should put the 533 MHz in a separate EDID and if that doesn't work then you need to tell Sony that their PS4 is not using the EDID correctly.

I cannot check a intel or a amd graphics card. My mainboard only has a hdmi 1.4 output so I can only do 4k@24hz and i don't have a amd card at hand.
I also can't try the converter and send it back if it doesn't work, because you can only buy it in the US.
That's the reason why I ask here. I have to pay 40$ of import fees.

I have a new firmware 0731 from optomedia that replaces the 1920x1080 EDID with an EDID that has a 3840x2160 60Hz timing with only a pixel clock of 533 MHz. Nothing else has changed. Send me a message if you want to try it out. It works with my Dell P2415Q but the Dell works with all the previous firmwares so I don't know if this new one will fix anything.

Thanks a lot but i returned the converter :/

Hi Joe. Could you please send me this new firmware. I will try it with my converter. You already have my email. Thanks in advance.

Still no luck. Firmware 0731 from optomedia didn't solve the problem.

Yeah, it only changed the EDID on the HDMI side. If your display doesn't work with the adapter from a computer (where you can create any custom resolution) then your display won't work with anything until they change the DisplayPort side of the firmware.

With the adapter, If your display can work from a computer using the timing specified in the adapter's EDID but not from a game console then maybe this new firmware will help (but only if the game console honors the information in the EDID).

For people who are still interested, I got a reply on my mail to Gofanco:

From what we've seen so far, G-Sync monitors, regardless of brand, operate in 533MHz 4K bandwidth and our adapter only works with 594MHz 4K/60Hz bandwidth (SMPTE 4K).  This is in the built into the hardware and disabling G-Sync function in the NVIDIA Control Panel won't help. 

Most monitors can switch between both bandwidths but G-Sync monitors do not.  We have an AOC monitor in-house and just couldn't get it to work.

I can create custom resolutions on a PC with various timings and they'll work on my Dell P2415Q with or without the adapter. Are they saying that a 533MHz signal from HDMI is converted to 594MHz by the adapter? It doesn't do that with other timings from 45 Hz to 60 Hz. Well, to be clear, the display only shows the resolution and refresh rate, not the pixel clock so I can't be 100% sure that some kind of pixel clock conversion isn't happening. If the pixel clock is being increased, then it would have to add pixels to the blanking areas to maintain the refresh rate. I believe the converter has diagnostic information available via a USB serial console that could help describe what is happening, but I don't know the necessary commands.

Thanks for your reply, but it's logical you can play with the settings when you use a PC. I think my question about the G-Sync option is irrelevant since the option has to be configured via the NVIDIA control panel on the PC itself. The PS4 isn't really comparable in my opinion. 

Anyway, I am going to try an adapter (4k30hz), which isn't going to work most likely, and share the results. I think I will be forced to buy a TV aventually, to experience the PS4 4K resolution. One upside though, TV's have HDR, which will make the experience a bit better :)

My point wasn't about being able to play with the settings. It was about being able to get a 4K 60 Hz 533 MHz signal to work. There is currently no explanation why I can create a 4K 60 Hz 533 MHz signal to work on my display, but you can't get it to work with your display unless the converter is doing something inexplicable like taking 533 MHz and outputting 594 MHz. Can they confirm this behavior? Does output clock not always equal input clock? Is output clock usually not equal to input clock (i.e. input clock may have a continuous range but output clock can only be certain discreet values)?

If you're saying you can get a 4K 60 Hz 533 MHz signal to work on your display using a PC but not with a PS4 then that would be an important distinction worth noting here.

Ah okay. I missunderstood you then, sorry. But I think the converters of SIIG and Gofanco aren't worth trying for me anyway, untill they say G-Sync is fully supported on the output with a 4K60Hz 533MHz bandwidth. So for me personally the one from Partilink is more interesting now.

Sounds good man! Do you use a G-Sync screen?

No I do not. G-sync is a Nvidia brand and defined for Displayport only afaik, but I am aware there is ATI's Freesync that is also defined for HDMI, but it is probably not an industry standard. I don't expect the adapter to handle variable framerate, but I have not tried it.

MCMG is referring to the problem in the previous post where the optomedia/gofanco/SIIG converters aren't able to output video to a g-sync display.

The g-sync display is being used as a DisplayPort display without g-sync features. The current speculation is that the problem is due to the fact that the g-sync display does not allow 594 MHz pixel clock timing (has that been confirmed using custom resolution settings on a PC?) and for some unknown reason, the converter will not output the required 533 MHz signal. Either the converter won't output 533 MHz when receiving a 533 MHz HDMI input (can be tested using custom resolution settings on a PC), or the PS4 won't provide a 533 MHz HDMI input.

I have sent an e-mail to Partilink and asked which bandwidths the converter use. This is the reply I got:

To your question, the P4K2-H1D2 supports both 533Mhz and 594Mhz.

But now I am not sure at which side these bandwidths are supported... the input or the output. Also, is 4K suported on the 533MHz bandwidth. I think I should ask them these questions before ordering one :D 

For the people who are interested in ordering this coverter, and as "ost" said, the converter is available on https://www.ute.de

This is the reply I got from UTE:
The P4K2-H1D2 supports both 533Mhz and 594Mhz. Meanwhile for your technical information, this converter is not a scaler therefore it cannot convert 533Mhz to 594Mhz or covert 594Mhz to 533Mhz.

Does anyone know which bandwidth the PS4 Pro has on its output?

I am afraid the PS4 uses 594Mhz.. I think Partilink has the same problem as the other 2 converters (SIIG and Profanco). Somehow they aren't able to convert the bandwidth in the converter.

I am guessing the PS4 will use whatever the EDID on the display tells it to. Normally a TV will provide CEA861 timing in the extension block of the EDID. Iirc, the CEA rev needs to be F+ to support 4k. The traditional EDID1.2 does not support 4k resolutions as native resolution unless you go EDID1.4, wich some sources may not undertand.. There are also some displays providing DisplayID extension that may cause problems. Hook up your monitor to a pc and use moninfo from Entech to find what your monitor presents itself as. Remember to view "live" (vs register) edid, as windows will just copy the first 128 byte base EDID to the registry,.
Anyway, I know the Partilink will pass on both those pixelrates. I have tested them both.

Honestly, I think I will go for an 4K TV since the converters are worth (in Europe) 400 euro's or even more. It's cheaper than a good TV, but I think the investment in a good TV is more worth than spending money on a converter which might work, but a big chance it doesn't work with my setting. For now I just use the HDMI 1.4 port on my monitor untill I got enough money for a 4K TV.


Thanks for all your input anyway!

ost, how do you know the pixel rate (MHz) is faithfully duplicated from the HDMI input to the DisplayPort output? Onscreen menus of displays usually only show the vertical refresh rate (Hz). You might be able to use DDC/CI to query the horizontal refresh rate (kHz).

I think partylink is saying that the pixel rate is faithfully duplicated, or at least the converter will not take a 533 MHz input and output 594 MHz with extra pixels for the horizontal blanking?

It would be nice to know for sure how the converter handles various pixel rates (as required to support various resolutions and timings).

The Partilink uses some kind of unidentified LCD monitor driver as the core IC. It is programmed to just forward the resolution to a LCD monitor driven by (e)DP. The adapter also integrates an STDP4320 (Megachips) IC to split this output into two DP outputs.
Whether any porches get modified I don't know for sure, but I don't think so. I am pretty sure it does not convert the pixelrate.
A 4k60 (4:4:4) TV would in any case be able to handle the 594, because it's part of the CEA. Computers are more likely to output 533. If you have some monitor only capable of 533, you have to trust it's EDID/CEA and the sources capability to interpret it.

Partilink does not work with G-Sync monitors. They did some tests and confirmed to me via mail that it doesn't work:

Thank you for your question. We presume your question are all about G-Sync monitor right? Sorry after verification this  week we find this converter is not compatible with G-sync monitor.
conclusion, there isn't any adapter available yet that works with G-Sync monitors

That statement does not explain why it doesn't work. G-SYNC monitors can work with non-Nvidia DisplayPort sources (without using G-SYNC’s variable refresh rate functionality), so why can't G-SYNC monitors work with this converter? Maybe the eDP chip doesn't like the DisplayPort of the G_SYNC monitors (but it does work at lower resolutions or refresh rates?). Maybe it can be fixed in firmware.

I wonder if piping the DisplayPort output of the converter into a Thunderbolt add-in card, then extracting the DisplayPort using a Thunderbolt dock or Thunderbolt 3 to Dual DisplayPort adapter would have an effect?

I am not sure why it doesn't work. Perhaps the best way is to check that with the companies themselves since they are building the converters. I don't have a lot of knowledge about the technical functions of these converters. All I know is that all the companies (SIIG, Profanco and Partilink) gave me the same answer, that G-Sync monitors aren't compatible with these converters. They didn't give me any technical substantiation with their answers... maybe you would like to send them an e-mail with your questions?
And your setting sounds worth trying, but it's only getting more and more expensive.. I think a new TV is still a better option than struggeling with something which has a small chance of succes.

Another simpler idea is to use a MST Hub between the converter and the display - the hope is that the converter will accept the MST Hub, and the MST Hub will transmit the DisplayPort to one (or all) of it's DisplayPort outputs - this requires two things:
1) the DisplayPort input of the MST Hub must accept a non-MST signal from the converter. I think this is likely as StarTech says it's MST hubs work with macOS which doesn't support MST for multiple displays (but in this case the input is mirrored to all outputs of the MST Hub).
2) The MST Hub must in some way present to the DisplayPort source (the converter) a DisplayPort device that is different than the G-SYNC display in a way that makes the converter not vomit. I'm not sure about this one. I think it's a necessary feature of the hub to modify the DisplayPort information, as the hub is able to take an MST input and output to multiple SST outputs. Basically, it takes multiple SST displays and presents to the computer a chain of MST displays. I could be wrong about this. Maybe SST is the same as MST with display count = 1?

Yes I would like to, but I didn't buy any of these adapters because all the companies (SIIG, Profanco and Partilink) told me the same, the converter isn't compatible with G-Sync monitors. They actually meant to say, it is not possible to get a 4k60Hz signal on the input of a G-Sync monitor. The only signal which is available is a 1080p60Hz. So yea maybe you will find something in the log, but perhaps you should ask Profanco the results of the test since they tested a G-Sync monitor with their adapter.

I am very interested to see the EDID of this monitor.
There is no reason not to support std gfx modes, except the EDID may not contain a CEA-861-F block (wich would be weird, but possible) that the PS4 may require to run 4k. If it only has a -E CEA block, the PS4 may enter 1080p. On some 4k monitors you also have to manually enable the DP1.2 (vs 1.1) to get to the pixelrate you need.

Note:The DP and HDMI port may present different EDID to the source.

That's just crazy pricing :( I know the volume price from the factory so if you want to resell volumes at lower price, contact partiling directly.

I don't think there's anything new. There are the devices from SIIG and gofanco.
https://www.amazon.com/dp/B07C39QBSF
https://www.amazon.com/dp/B07BT4BG4C

I think they're selling the same products. Visit their websites for more info.

They both have a 1-to-1 version which are probably the same product from opto-media.
http://opto-media.com/goods.php?act=category&no=55

They both also have a 1-to-2 version that I haven't seen before which are probably the same product from Partilink.
http://partilink.com.tw/product-info.php?id=93%20Video%20Splitter,HDMI%202.0%20to%20DisplayPort%201.2a%20Splitter%201x2

Dude, I was thinking they would never release it, but it looks like it's here :) Or, most probably the product was put into the works but never actually produced or released

Thanks, I have now ordered it. Found it in a Swedish web shop.

Hi, do you know of any shop that sends to Italy? Thanks

Awesome news, now I have the following problem. 

I have my desktop connected to my only display port on my monitor. 

I don't want to switch cables all the time I want to game with my ps4, is there any solution to this? 

Does this cause any lag? 

I believe there are display port splitters with selectors, somewhere. On another note, what should cause any lag of sorts?

Jaak Fripont wrote:

I have my desktop connected to my only display port on my monitor. 
I don't want to switch cables all the time I want to game with my ps4, is there any solution to this? 

There exist DisplayPort switches or KVMs. The signal is only DisplayPort 1.2 but there also exist DisplayPort 1.4 switches.

Jaak Fripont wrote:

Does this cause any lag? 

It's converting pixel by pixel. It's not doing any scaling or other processing so it doesn't need to see the entire frame before outputing pixels.

Hi,

I tried to look at online stores with the adapter in stock. They are all either in Scandinavia or Finland or Latvia or Belgium or the Netherlands . None of them send over to Italy. Did anyone find it anywhere else?

Thanks

One person tried the CAC-1331 with an Xbox One S and an Apple Pro Display XDR and had some issues:
https://forums.macrumors.com/threads/combination-ps4-and-xdr-display.2217347/post-28414320

It may be that the adapter works better with a different display?

It did not work for me.. i am running a asus monitor 4k gsync 60hz and a xbox one x... got the adapter you guys are talking aboit and it will not work.
When connecting to PC it runs fine when connecting to xbox its just a black screen

I purchased the SIIG adapter and updated it's firmware. Usually when I turn my Xbox one x on I get a black screen, so I start flipping the switches on the adapter (the ones that control the resolution) until I get a signal, after that I return the switches back to 4k of course and it works.

Hi! BDM4065UC/00 + Amazon FireTV 4k + Club3D CAC-1331 : it's working! Picture quality not bad at all! (I even get 4k from PrimeVideo, I'll check with DisneyPlus later on, but don't believe it's going to work)