24" Widescreen CRT (FW900) From Ebay arrived,Comments.

I really hope someone here has a solution. I've spent 12 hours today trying to solve this issue.

I read here and on Reddit about how Intel iGPUs can do interlacing, so I bought a new motherboard and an i5 13600k to use interlacing on my IBM P275. I have a 6900 XT as well that I'm using. Set it up and made some interlaced resolutions. I was blown away by the clarity at 2400 x 1800i at 120 Hz. Played Helldivers 2 and had a great time. Thought I would try Halo and it unfortunately went to black screen. Wasn't sure what that was about but after that, every game that I've tried it crashes. My PC just will not switch from my iGPU to my 6900 XT. Just to clarify, Windows 11 lets you choose which GPU you want to use. I was connected to my IGPU, using it to display interlaced resolutions while the games render on my 6900 XT.

It doesn't matter if I tell it which specific GPU in the Windows graphics settings. It just doesn't work. I uninstalled and reinstalled both Intel and AMD drivers. Tried multiple different versions of each. It will not work. It will start the games if I specify iGPU but will not use the 6900 XT. I can't switch in the middle of a game either.

Looked for BIOS settings, tried changing the iGPU to primary. That didn't work. Downloaded the latest motherboard drivers. Didn't work. It's the same black screen everytime. GPU fans don't spin. For some reason the iGPU is not communicating to the 6900XT anymore.

Again, it did work initially but after a crash it hasn't worked again.

Anyone have any ideas? My last resort is a Windows reinstall but I really would prefer not, as I have SSDs full of family videos and pictures I would have to deal with. I'm not even sure if this would solve the issue?
That’s really odd.

I think the only variable that matters is what’s set as the rendering GPU in graphics settings in Windows

Only thing I can think of is changing those back to default, then back again to the 6900xt
 
Yeah but it doesn’t have analog output. 380x would be better as an analog GPU. Very high pixel clock ceiling
the 580 is stronger, smaller and cheaper in my country xdddd , does it support interlacing with the newest drivers or will i have to resort to old drivers to use interlacing on it?
 
the 580 is stronger, smaller and cheaper in my country xdddd , does it support interlacing with the newest drivers or will i have to resort to old drivers to use interlacing on it?
I don't know.

You're likely going to run into a problem where your HDMI adapter won't support very high pixel clocks.

Just do like us and have really nice card as the main card. Like a RTX Nvidia or RDNA AMD, then run an older analog card in another slot for interlacing.
 
Dumb question. Is it possible to have a powerful GPU like an RTX perform all the rendering, and then send the output to another video card in the system with analog output?
 
Dumb question. Is it possible to have a powerful GPU like an RTX perform all the rendering, and then send the output to another video card in the system with analog output?
I think in the past few pages you can read from a couple people who have done this.

"Aperture Grille" on youtube also did a video about it.

In most sitautions, meaning DX11 and DX12, it works great, only 3ms lag.

Though it has a significant performance cost for games running the Vulkan API. Over 10%.

And last time I tried to do it with a DX9 game, the game wouldn't launch. But there are probably workarounds that can be done like forcing borderless window, etc.
 
I really hope someone here has a solution. I've spent 12 hours today trying to solve this issue.

I read here and on Reddit about how Intel iGPUs can do interlacing, so I bought a new motherboard and an i5 13600k to use interlacing on my IBM P275. I have a 6900 XT as well that I'm using. Set it up and made some interlaced resolutions. I was blown away by the clarity at 2400 x 1800i at 120 Hz. Played Helldivers 2 and had a great time. Thought I would try Halo and it unfortunately went to black screen. Wasn't sure what that was about but after that, every game that I've tried it crashes. My PC just will not switch from my iGPU to my 6900 XT. Just to clarify, Windows 11 lets you choose which GPU you want to use. I was connected to my IGPU, using it to display interlaced resolutions while the games render on my 6900 XT.

It doesn't matter if I tell it which specific GPU in the Windows graphics settings. It just doesn't work. I uninstalled and reinstalled both Intel and AMD drivers. Tried multiple different versions of each. It will not work. It will start the games if I specify iGPU but will not use the 6900 XT. I can't switch in the middle of a game either.

Looked for BIOS settings, tried changing the iGPU to primary. That didn't work. Downloaded the latest motherboard drivers. Didn't work. It's the same black screen everytime. GPU fans don't spin. For some reason the iGPU is not communicating to the 6900XT anymore.

Again, it did work initially but after a crash it hasn't worked again.

Anyone have any ideas? My last resort is a Windows reinstall but I really would prefer not, as I have SSDs full of family videos and pictures I would have to deal with. I'm not even sure if this would solve the issue?

Replying to myself in case anyone else here comes looking for the same issue. After spending probably 20 hours trying different drivers, BIOS updates, Chat GPT suggestions, a fresh Windows install, reseating the GPU and performing memtest, I finally figured out the issue. It's my AMD 6900 XT. Decided to try out a 1080 ti I had laying around from a previous build, and it worked perfectly. Unfortunately, as per usual, AMD has its quirks.

Using 2400 x 1800i at 120 Hz now on the 1080 ti. Looks and feels great. Still can't get any Gamepass games to work, unfortunately. Even if I set a specific GPU for the Xbox app, it defaults to the higher performance one (AMD), which causes the game to crash every time. If a game in Steam was previously set to the 6900 XT, I have to connect directly to the 1080 ti, launch the game, change the GPU in the in game display options, power off, and then connect to iGpu. It then works. Leaving behind AMD in this next generation.

This res looks sharper than any progressive that I've used. Not sure if it's because I'm still far below my bandwith limit or what.
 
Is anyone familiar with an issue with the DP2VGAHD20 converter causing issues with dual monitors? It seems to be stuck in a loop of constantly disconnecting and reconnecting. While using the CRT it works great. If I switch back to my main ultrawide LCD monitor (HDMI) there are a host of issues. I experience periodic black screens in games that are playing in full screen. Also in display settings and the nvidia control panel are constantly refreshing the info displayed. In device manager both my CRT and LCD will disappear and reappear constantly. There is no issue using the LCD otherwise. I can browse the web and be on the desktop and experience no flickering or refreshing. Using both monitors at the same time using extended or duplicate eliminates the issue, or using the CRT only I don't have any of these issues. Its a pain because the only solution I found is to disconnect the DP2VGAHD20 when using my main LCD monitor.

I came across similar posts here and here but I'm not sure if they are the same issue or not.
 
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Replying to myself in case anyone else here comes looking for the same issue. After spending probably 20 hours trying different drivers, BIOS updates, Chat GPT suggestions, a fresh Windows install, reseating the GPU and performing memtest, I finally figured out the issue. It's my AMD 6900 XT. Decided to try out a 1080 ti I had laying around from a previous build, and it worked perfectly. Unfortunately, as per usual, AMD has its quirks.

Using 2400 x 1800i at 120 Hz now on the 1080 ti. Looks and feels great. Still can't get any Gamepass games to work, unfortunately. Even if I set a specific GPU for the Xbox app, it defaults to the higher performance one (AMD), which causes the game to crash every time. If a game in Steam was previously set to the 6900 XT, I have to connect directly to the 1080 ti, launch the game, change the GPU in the in game display options, power off, and then connect to iGpu. It then works. Leaving behind AMD in this next generation.

This res looks sharper than any progressive that I've used. Not sure if it's because I'm still far below my bandwith limit or what.
900+900 on that vertical axis is exactly within the perfect range in which your monitor's actual hardware can natively resolve that resolution http://www.dansdata.com/danletters088.htm
 
Is anyone familiar with an issue with the DP2VGAHD20 converter causing issues with dual monitors? It seems to be stuck in a loop of constantly disconnecting and reconnecting. While using the CRT it works great. If I switch back to my main ultrawide LCD monitor (HDMI) there are a host of issues. I experience periodic black screens in games that are playing in full screen. Also in display settings and the nvidia control panel are constantly refreshing the info displayed. In device manager both my CRT and LCD will disappear and reappear constantly. There is no issue using the LCD otherwise. I can browse the web and be on the desktop and experience no flickering or refreshing. Using both monitors at the same time using extended or duplicate eliminates the issue, or using the CRT only I don't have any of these issues. Its a pain because the only solution I found is to disconnect the DP2VGAHD20 when using my main LCD monitor.

I came across similar posts here and here but I'm not sure if they are the same issue or not.
Yes it's a known issue, this is what a guy said in a review on Startech website (at the bottom of this page):

""When I first purchased it, I did run into a very niche problem. While the adapter was plugged in and the monitor was disabled in Windows, the adapter would cause the operating system to experience a hardware disconnect/reconnect cycle every 5 or so seconds. This didn't happen while the monitor was enabled and active, so it wasn't something I was prepared to return the product over since it worked so wonderful while in use and all I had to do was unplug it to solve my niche problem. But I thought it would be at least a good idea to contact StarTech's technical support team and let them know about the potential hardware fault.
Well I reached Justin, the team's Technical Lead, and he went above and beyond for me. He helped me diagnose and determine that it was indeed the adapter that had the problem, and that he would pass that information on to the techs to look at it internally. After a month or so, he reached back out to me to let me know that they had resolved the issue and would like to send me the unit to confirm. For absolutely no charge, they shipped me the new one and I am happy to confirm it does indeed fix the issue! I can now keep the adapter plugged in 24/7 without worrying about hardware disconnect loops. I'm so grateful for the wonderful support Justin and the rest of the team showed in resolving this very small issue and I can absolutely say I recommend Startech to all my friends and family after this experience.""

So they solved the problem three years ago sending a new sample to this guy, it would be interesting to know how they solved it, if with a hardware change or a firmware update, maybe you can ask Startech about it, linking the review on that page.

Restart the video driver, using the CRU restart utility or manually using the device manager, can be a good workaround.
If you use utility like MSI Afterburner to load FAN-Clock Profiles at system startup, you need to reload it after the video restart.
 
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Well I reached Justin, the team's Technical Lead, and he went above and beyond for me.

While you had him on the line, did you happen to broach the subject of producing higher pixel clock adapters, like 450-600mHz range? I imagine it's just a matter finding the right chipset, which Startech is equipped to do
 
Yes it's a know issue, this is a part of a review on Startech website (at the bottom of this page):

...

We need to know how they solved the problem, if with a hardware change or a firmware update, maybe you can ask Startech about it, linking the review on that page.

...
Thanks for that info! I went through Startech chat support and chatted with Trudian and described my problem. He pointed out multiple times this converter is not meant for gaming. I emphasized the issues are occurring not on my CRT using the converter while I'm gaming but on my other LCD monitor both in Windows and when I'm gaming on that monitor. He offered me a case number to submit an RMA claim. I submitted the claim to do a replacement and am waiting for a response back with further instructions. I did try to ask if they knew why this issue was occurring but they didn't reply to that question.

If anyone goes down this route I would describe the issue like the review from the startech website posted above. Its when the CRT is disabled that causes the reconnect cycle. The fact it causes my LCD to black out when gaming during the same reconnect cycle is secondary. I purchased this unit in 2021 and have had this issue since day 1 I just dealt with it by not using the adapter most of the time. It'd be nice to leave it connected so I can easily bounce back and forth between monitors. Using 1 monitor at a time works best for me with how games will force themselves to be fullscreen on my LCD rather than my CRT monitor and it messes up all my desktop icons constantly using it that way.

Its a shame they say this adapter is not meant for gaming use as it is the best easily obtainable adapter on the market currently. Its the only adapter out of the 4 or so that I have that can handle every resolution I throw at it for my CRT. My portta doesn't have high enough pixel clock and gets this nasty green fringing when that happens. The HDFury2 I have had issues but I can't remember what it was now its been sitting in a box for ages. I guess if this doesn't work I can try that again. I need up to around 300mhz pixel clock and I think the HDFury2 tops out at 200mhz or less. I'll post an update once the RMA process proceeds further. I don't think I will get an answer as to what the problem/fix is from Startech however.
 
While you had him on the line, did you happen to broach the subject of producing higher pixel clock adapters, like 450-600mHz range? I imagine it's just a matter finding the right chipset, which Startech is equipped to do
What I've written between "" is the review of that guy on Startech website, it's not me, I edited my previous post to be more clear.
About the faster adapters there is a problem, while most of the new chipset use new and fast input like HDMI 2 or displayport with HBR3 lanes, the integrated DAC is the same old shit.
Another problem is that while the DAC can sustain a higher clock thanks to the new manufacturing processes, the output filtering is made for 200 MHz in most cases.
Example, the ANX9847 is the faster on paper with its 270 MHz and on the RGB output you'll see "Capacitor-Inductor-Capacitor" for each channel, most other adapters with different chip have nothing or a single Cap.
 
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Thanks for that info! I went through Startech chat support and chatted with Trudian and described my problem. He pointed out multiple times this converter is not meant for gaming. I emphasized the issues are occurring not on my CRT using the converter while I'm gaming but on my other LCD monitor both in Windows and when I'm gaming on that monitor. He offered me a case number to submit an RMA claim. I submitted the claim to do a replacement and am waiting for a response back with further instructions. I did try to ask if they knew why this issue was occurring but they didn't reply to that question.

If anyone goes down this route I would describe the issue like the review from the startech website posted above. Its when the CRT is disabled that causes the reconnect cycle. The fact it causes my LCD to black out when gaming during the same reconnect cycle is secondary. I purchased this unit in 2021 and have had this issue since day 1 I just dealt with it by not using the adapter most of the time. It'd be nice to leave it connected so I can easily bounce back and forth between monitors. Using 1 monitor at a time works best for me with how games will force themselves to be fullscreen on my LCD rather than my CRT monitor and it messes up all my desktop icons constantly using it that way.

Its a shame they say this adapter is not meant for gaming use as it is the best easily obtainable adapter on the market currently. Its the only adapter out of the 4 or so that I have that can handle every resolution I throw at it for my CRT. My portta doesn't have high enough pixel clock and gets this nasty green fringing when that happens. The HDFury2 I have had issues but I can't remember what it was now its been sitting in a box for ages. I guess if this doesn't work I can try that again. I need up to around 300mhz pixel clock and I think the HDFury2 tops out at 200mhz or less. I'll post an update once the RMA process proceeds further. I don't think I will get an answer as to what the problem/fix is from Startech however.
What does a video adapter have to do with gaming?
It's a simple converter from digital to analog video output, if you play a game or not doesn't change anything.
I don't have that adapter but from what i understand the problem occurs when it goes into standby/sleep because you disable its video port.
The guy in that review describes just that and it looks like Startech has solved the problem three years ago.
When you or other users contact the Startech support, try not to mention things like pixel clock, resolutions over 1920x1080 60Hz, high end CRT for gaming, they simply don't understand.
Just describe the problem as it is, copy/paste what that guy said in that review and ask if there is a firmware to download that fix it.
All the users i've seen with the DP2VGAHD20 have that problem, so yours it's not a faulty adapter and change it with another identical sample doesn't change it.
It would be interesting to know if the new samples on the market have been updated or not.
You can also try to contact the chipset manufacturer [email protected] and ask if it's a known issue of the IT6564 chipset or if they have a new firmware to update.

Did you try to restart the video driver after that reconnect loop starts?
If I remember correctly, another user solved it that way.
 
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What does a video adapter have to do with gaming?
Probably nothing. It's their way of looking for an easy way out to close the ticket. "User states adapter is being used for gaming - not supported. Case closed."
You are 100% right in not giving all the info to commoner tech support. Let them figure it out. No need to provide extra details which are irrelevant. Should have just left it as: Video port 1 is my monitor 1. Video port 2 is your adapter and another monitor. When port 2 is disabled, ports 1 and 2 cycle between disabled and enabled in device manager. Happens on 2 pcs. Now fix it."
 
Probably nothing. It's their way of looking for an easy way out to close the ticket. "User states adapter is being used for gaming - not supported. Case closed."
You are 100% right in not giving all the info to commoner tech support. Let them figure it out. No need to provide extra details which are irrelevant. Should have just left it as: Video port 1 is my monitor 1. Video port 2 is your adapter and another monitor. When port 2 is disabled, ports 1 and 2 cycle between disabled and enabled in device manager. Happens on 2 pcs. Now fix it."
That's what I do when I have to get support for something (whenever possible). The last time I had to explain something at length I got hung up on and it had to go higher up the chain.
 
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