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Something wrong with the dagauss cycle?

1280x960 100 Hz requires a pixel clock of 178 MHz with CVT and 179 MHz with GTF timings, i think that even the worst adapter can handle that. There aren't resolutions fixed by manufacturer or that can vary per adapter, OS through video drivers, EDID of your monitor and input bandwidth of your...

Added this and other info to the list

Ok, for now i leave it as it is, i only hope that it doesn't get worse. If that were to happen, now I have a starting point thanks to your tips. I suspected something like this, thanks for testing it.

Interesting, in the last year my FW900 started flashing blue screens during warmup, after some time the flashes turned red, now they are almost always red and very rarely blue. It happens in the first 30-60 seconds after power on, usually one or two flashes, rarely 5 or 6, some days no flashes...

Thanks for testing all these adapters and also for the other things. About the chipset: PTN3355 should stop at 180 MHz with 8bpc and 240 MHz with 6bpc, maybe beyond a certain bandwidth it drops to 6bpc the input? Same thing for the PS8617. Vention CGKHA with IT6562 should stop at 360 MHz, i...

Is that loss costant across the resolutions or change as you go up with pixel clock? It would be interesting to know if it also happens with other samples and what happen with the 62967 or the Synaptics based adapters.

Here you can find a summary of these adapters. Until recently, users were telling if the image was good or bad, both Delock 62967 and Startech DP2VGAHD20 have a good image for gaming and media content, without blur or other bad things. Then XoR did extensive testing on DP2VGAHD20 and discovered...

Did you see any differences in image quality compared to Delock? Can you use different resolutions with different timings with VGA and HDMI or only the same?

Does a restart of the video driver fix the issue? Device manager - Display adapters - Disable/enable your graphic card or using the CRU restart utility which is the same thing, but it also restart the graphic panel.

Here you can find a list with the adapters and the relative issues.

I remember that during my old tests I recovered 12-13 MHz of pixel clock reducing the blanking without problems and without touching the vertical timings, so yes with a 375 MHz adapter the 2304x1440@80Hz is easy, 2048x1536@85Hz with mosters like Diamond Pro 2070SB or F520 most likely, my tests...

This adapter uses the IT6224 chipset which is like the IT6564 of the Startech DP2VGAHD20, but with native USB-C input (information obtained from ITE and Delock) In the description you'll see: "Two monitors can be operated simultaneously at the outputs, the same image is displayed on all ports"...

Good idea, if there are news from Startech please report here. I can understand the problem with dual monitor because if you continue to use the computer with the primary display you have that thing in background that brake your balls. But with a single display, when it goes to standby, it is...

Yes this problem has been mentioned here with a dual monitor configuration. Maybe this should be fixable disabling the secondary monitor in device manager, but with single monitor you can't do that. I don't have that adapter so i can't test, my Delock 62967 with Analogix chipset doesn't have...

Maybe it's a bug with the HDMI output of the 5700 XT, same results without the Dr HDMI? Can it be useful if the DAC is 8 bpc? Most of the displayport receivers of these adapters support 10 bit on input, the fact that it is in most cases unselectable is a mystery. Example LT8711X-B and LT8712X...

That is the same old problem that arises when you try a daisy chain with multiple adapters. Look here and here The way through the Sunix Card can work, it depends on how the gofango adapter handles the displayport signal.

No he showed an Amazon page in the video where you can see the Vention CGKHA which uses the ITE IT6562 + VIA VL100. With these chipset it can't go over 360 MHz so we thought he pointed to the wrong model, but we don't know what the exact model is. If it's really the CGKHA then the Vention specs...

Are you sure the chipset is the LT8711X-B? Your exact model is ORIC0 PTAV? Oh now i see that, but only on the Chinese website Maybe you can ask ORIC0 to be sure It is normal to see 4 HBR lanes instead of 2 HBR2 under 360 MHz for stability purpose. The inability to go in HBR2 mode can be caused...

Thanks for opening the Benfei HDMI>VGA, now we know for sure that the chipset is the Algoltek AG6200A, I suspected it. About the adapters with Lontium,look at the end of this post. Mmm... it seems that the CMFHB on Amazon.it is no more available.

If for some reason your connection fails to reach the Displayport HBR2 mode, you are limited to 360 MHz max pixel clock. Try with 2048x1536 79 Hz with CVT timing or other resolutions approaching that limit, if they work and you can't go over 360 MHz then that could be the problem (bad...

Here a summary of various adapters. If 375 MHz max pixel clock is enough for you, buy the Startech DP2VGAHD20, it doesn't cost too much, it's available everywhere and it works good. If you want more performance the only solution is one of the Synaptics VMM2322 based adapters. There are also the...

I remember when it was new that I spent hours adjusting the geometry with the various resolutions using different models of grids, I would certainly have noticed the problem. Now I notice the problem just by looking the desktop icons at the top of the screen. Moving the icons from the bottom to...

My brother's LaCie electron22blueIV has the same problem. He bought it new in 2004, should be made in Nagasaki. I don't remember that problem when it was new, so it should have come out over the years.

Only 247 MHz is very strange considering that even the shittiest chipset can do more. Does the adapter see the monitor's EDID correctly? What happens next, does it continue with that thing until you restart? I don't have that adapter, but with my Delock 62967 i have never seen something like...

I've never used them before, but some users are interested so i do some tests to get as much information as possible. Also i must admit that at high resolutions and with very high refresh like 1920x1200i 160 Hz and over, it's not that bad.

Yes, if the DP receiver has no problems with that missing metadata. I can understand the displayport, but removing something that is working properly is a very bad thing. So if you load a game that resolution is not selectable? They should at least fix it with the HDMI output. What happen...

Thanks for testing, like my previous test with a gtx 1070, CRU is ignored and it's not supported with the Nvidia control panel, it works only with old AMD cards (bad with my adapter) or maybe with Nvidia 970-980. This is from an old changelog with Linux drivers: Disabled interlaced modes over...

I tested the native DAC with the FW900 and the interlaced resolutions are right, i also tested the adapter with the Samsung CRT and like other tests the image is bad, the output timings are correct but something strange happens during the digital to analog conversion, it's like the chipset can't...

I tried with 1920x1200i 160 Hz GTF using the AMD utility, the resolution is accepted and applied. I clearly see that the resolution is indeed interlaced and the FW900 menu shows 105.5kHz / 160Hz. Last time i did a quick test, just to see if it worked and saw that something was wrong with the...

I did some tests with interlaced resolutions: -AMD 7950 with Delock 62967, it works with CRU and AMD custom resolution panel with both Windows 10 and 7 -Nvidia GTX 1070 with the same adapter, using CRU is like doing nothing, using Nvidia control panel it says not supported, Win 10 and 7 same...

If what J5 Create told me is correct, that adapter uses the chipset ITE IT6516BFN + another VIA chip to handle the USB-C connection. So the max clock should be 180 MHz with 8 bpc and 240 MHz with 6 bpc, do you see somewhere in the graphics control panel, if the color depth changes when you are...

AMD broke something in the drivers with the new cards (from VEGA, i'm not sure about Polaris) About the adapter with the LT8612UX we can only wait, i'm in contact with Unitek and maybe something will happen. In the meantime, you can try with a HDMI adapter that not requires the YCbCr to reach...

Something in the displayport output of that adapter is incompatible with the Icy Box, maybe the hotplug signal. About the YCbCr you can only try with some of those settings of CRU and see if something work. About the interlaced resolutions, i can't test much because with my card (AMD 7950) they...

Did you have the external usb power connected to the Icy Box when you tested the daisy-chain with those adapters? About the YCbCr with the AMD card try some things with CRU: -open CRU and add an extension block (type CEA-861) -add a data block inside this extension block (HDMI support with...

The problem with the HDMI to VGA adapters is that they are old with old chipsets. Another problem is that the HDMI receivers are compliant with HDMI 1.3 or 1.4 without other indications, which doesn't mean they can go up to 340 MHz because most of those things are optional, so example if they...

Nice test! About the input lag, a difference of 1-2 ms is normal, this because the ouputs sometimes are not perfectly syncronized in clone mode and one start a little earlier than the other. In fact in some of my tests the 62967 was faster than native DAC. So same performance as Flybye sample...

This is from Anandtech: Meanwhile VirtualLink ports, which were introduced on the RTX 20 series of cards, are on their way out. The industry’s attempt to build a port combing video, data, and power in a single cable for VR headsets has fizzled, and none of the big 3 headset manufacturers...

To calculate the pixel clock go here, after putting the resolution and refresh rate click on the white area of the page, look the calculated pixel clock under CVT timings and check also the horizontal frequency (H Freq) 488 MHz is for 2304x1440 100 Hz, for 80 Hz is 383 MHz, the FW900 specs are...

2304x1440 100 Hz is not supported by the FW900 and even if it were,it would require 488 MHz. USB-C adapters are for video cards with that output, like the Nvidia RTX, you can connect your card to a USB-C dongle, but only using an additional special card that costs 80 and more euro. What...