First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Many sites including LinusTechTips, RTINGS, TomsHardware, and others use the free Blur Busters pursuit camera invention. Now also available as a rail-less smartphone wave, too!
teo
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by teo » 03 Dec 2021, 12:55

Discorz wrote:
28 Nov 2021, 10:09
We don't have a good quality 240Hz full screen strobe crosstalk pursuit.
I took another round of 'normal' pure xp:
xg2431_240hz_normal_top_960pps_crop.png
xg2431_240hz_normal_top_960pps_crop.png (2.42 MiB) Viewed 13459 times
xg2431_240hz_normal_middle_960pps_crop.png
xg2431_240hz_normal_middle_960pps_crop.png (1.94 MiB) Viewed 13459 times
xg2431_240hz_normal_bottom_960pps_crop.png
xg2431_240hz_normal_bottom_960pps_crop.png (2.61 MiB) Viewed 13459 times

teo
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by teo » 03 Dec 2021, 13:02

I actually think my original 'normal' center screen looks a little better. I think I had used more optical zoom on this one:
orig_xg2431_240hz_normal_middle_960pps.JPEG
orig_xg2431_240hz_normal_middle_960pps.JPEG (1.43 MiB) Viewed 13458 times

I also tried for a full-screen hand wave screen cap. compared to the ghost test shots it's obviously blurrier, and the strength of the cross talk seems a little harsher in this still. the overall trend seems accurate, but probably not worth holding it up as an example:
xg2431_240hz_normal_960pps_full_crosstalk_crop.png
xg2431_240hz_normal_960pps_full_crosstalk_crop.png (5.27 MiB) Viewed 13458 times

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Discorz
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by Discorz » 05 Dec 2021, 08:43

Good job! I added link to your Google Drive folder on TestUFO Collection if u don't mind.
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teo
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by teo » 06 Dec 2021, 15:35

Discorz wrote:
05 Dec 2021, 08:43
Good job! I added link to your Google Drive folder on TestUFO Collection if u don't mind.
that's fine by me. I don't plan to delete those files from drive anytime soon, but if you'd prefer to host any of them elsewhere (although I think most of the good ones are now in the forum) feel free.

I've had a lot of fun experimenting with the xg2431. the motion clarity is better than my aw2717d unstrobed, and I now have an appreciation for the motion benefits of a good strobing implementation. I don't think I can get over 1080p though, so I'm probably returning the xg2431 in the next week-ish. if there are any other pursuits you'd like for me to try before then, let me know.

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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by Chief Blur Buster » 07 Dec 2021, 23:45

teo wrote:
06 Dec 2021, 15:35
Discorz wrote:
05 Dec 2021, 08:43
Good job! I added link to your Google Drive folder on TestUFO Collection if u don't mind.
that's fine by me. I don't plan to delete those files from drive anytime soon, but if you'd prefer to host any of them elsewhere (although I think most of the good ones are now in the forum) feel free.

I've had a lot of fun experimenting with the xg2431. the motion clarity is better than my aw2717d unstrobed, and I now have an appreciation for the motion benefits of a good strobing implementation. I don't think I can get over 1080p though, so I'm probably returning the xg2431 in the next week-ish. if there are any other pursuits you'd like for me to try before then, let me know.
You now do pursuits a bit better than some monitor reviewers now!

Easy Request:
Also, try a quick test of VT4640 with 60Hz and see if it works. This is the biggest successful VT tested at 60Hz, and post a screenshot of your VT4640 setting. I am trying to determine if there are unit-to-unit differences in ability to load a specific VT, or that I need to modify the QFT HOWTO to be easier. 4640 is chosen because it is exactly 4 times the VT1160 EDID used at 240Hz

Hard Request:
If I was dreaming, I'd ask for strobed pursuits of PureXP Ultra or Extreme (choose one setting) and stick to it, and pursuit 60, 75, 85, 100, 120, 144, 165, 180, 200, 224 and 240. Those are all the built-in strobe presets that automatically load in the monitor firmware when a custom resolution is created and PureXP is enabled.

But this is TONS of work, and I wouldn't want to burden a Blur Busters fan that's not a paid monitor reviewer.
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teo
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by teo » 08 Dec 2021, 11:19

Chief Blur Buster wrote:
07 Dec 2021, 23:45
Easy Request:
Also, try a quick test of VT4640 with 60Hz and see if it works. This is the biggest successful VT tested at 60Hz, and post a screenshot of your VT4640 setting. I am trying to determine if there are unit-to-unit differences in ability to load a specific VT, or that I need to modify the QFT HOWTO to be easier. 4640 is chosen because it is exactly 4 times the VT1160 EDID used at 240Hz
VT4640 is a no go for me--switching to that resolution was mostly black with some flashing of a super blurry desktop. but now I'm a bit confused, because I thought my 240hz 'stock' VT (which is what I interpret to be the 'EDID' value) is VT1125. am I missing something in the terminology or is my monitor different?

to be explicit on my methodology:
  • (screen 1) I fire up CRU, ensure the XG2431 is selected, select the CTA-861 entry in the 'Extension Block' section, and click edit.
  • (screen 2) I select the 239.761 Hz 'Detail resolution' and click edit. Note that there's also a 239.761 Hz resolution (as well as 60 and 144) if I change the Type to 'VTB-EXT' but the values are the same.
  • (screen 3) on the Edit screen for the stock 240hz Detailed Resolution, I click 'copy' without changing anything. note the VT1125.
  • (screen 4) after clicking cancel twice to land me back on screen 1, I click 'Add...' under the top 'Detailed resolutions' section, where you also see my previous 60/120hz QFT resolutions, and click 'Paste' to copy the details from the stock 240hz captured from screen 3. I select the 'Total' and 'Horizontal' radio buttons, enter 4640 in the Vertical column for the Total row, and hit okay. I reset my graphics drivers and find the 58hz option in NVCP and apply (unsuccessfully).
4640_attempt.png
4640_attempt.png (112.97 KiB) Viewed 13219 times
[Moderator edit to add link to allow zooming: download/file.php?id=2078]

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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by Chief Blur Buster » 08 Dec 2021, 13:55

This is new information — Some users tell me their monitors are EDID’ing at VT1160 instead of VT1125 -- possibly reported differently in NVIDIA Control Panel versus ToastyX.

Which port are you using?

Let me see if the plug-and-play Vertical Totals in the EDID signalling is different for DisplayPort versus HDMI. There are also some GPU-specific quirks that can cause EDIDs to deviate slightly for one reason or another, as it’s possible to have multiple slightly different EDID entries for the same refresh rate.

I need to track down why I’m receiving different reports, so I can tell people more reliable instructions for QFT. I wasn’t the person who worked on the EDIDs, so I’ll have to investigate.

Also try editing the Back Porch instead of the Vertical Total; to create your VT4500. This only works with the DisplayID / CEA861 extensions (normally reserved for 360Hz and up), because the old 4-slot area does not support ultralarge Back Porches due to legacy reasons.

DDC and EDID is the system that also allows a monitor to communicate to a computer. Metaphorically it needs to do “Hello computer! I am a gaming monitor, and I support 1920x1080p at 240Hz, along with these other refresh rates and resolutions, and variable refresh rate features, as follows…”. That is so the computer GPU knows what resolution and refresh rates are safe to use.

DDC and EDID was invented in year 1994 so it’s legacy-addled with garbage that confuses the **** out of even me. It’s full of chewing-gum and duct-tape extensions.

Toasty CRU is a way to override all of this plug-n-play stuff, to do nonstandard modes, custom resolutions, custom refresh rates, and latency-lowering signals such as Quick Frame Transport.

I will need to do some more tracing to find out why some get VT1160 and why others get VT1124 with their 240Hz mode.

I think I need to start work on an easy-to-use ”Blur Busters Refresh Rate Utility” to automate the creation of QFT modes without users seeing a number. I have some old configurator source code from an abandoned project that I can reuse for this, and I can roll-in some of the Strobe Utility codebase.

Perhaps even also integrate an optional DDC plug-in modules that can execute on triggers such as computer startup, or launch of a specific games, or the switch to a specific refresh rate (for things like multiple memories of PureXP Custom loaded per game, turn on/off PureXP, or even to automate XL2411 refresh rate overclocking, or do mudane things like change screen backlight brightness).

And…. One more thing. I may open source this. Whoo hoo!
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JDnoob
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by JDnoob » 10 Dec 2021, 17:09

Chief Blur Buster wrote:
07 Dec 2021, 23:45
Easy Request:
Also, try a quick test of VT4640 with 60Hz and see if it works. This is the biggest successful VT tested at 60Hz, and post a screenshot of your VT4640 setting. I am trying to determine if there are unit-to-unit differences in ability to load a specific VT, or that I need to modify the QFT HOWTO to be easier. 4640 is chosen because it is exactly 4 times the VT1160 EDID used at 240Hz
I have two XG2431's and they both behave identically in all regards:

My max-hz EDID is also under CTA-861. I derive everything from the 1160 vertical total. Including VT4640 for 60hz. I use HDMI.

My default max-hz EDID:
Screenshot 2021-12-10 151141.png
Screenshot 2021-12-10 151141.png (20.99 KiB) Viewed 13096 times
This is my CRU bin file with all my custom QFT's: https://drive.google.com/file/d/1Mx3ldu ... sp=sharing

I had to make another CTA-861 to fit 100hz QFT. Sometimes the monitor is recognized as VSC3B3B instead of XG2431 in strobe utility but everything still works fine otherwise.

I must note that vertical totals over 3789 did not work for me over DisplayPort but only over HDMI. I have an AMD card. Over DisplayPort, I would first have to set the vertical total to 3789 to derive a refresh rate 73.402hz and then manually lower the refresh rate to 60hz from there.

Interestingly, the default timings in the QFT how-to article derived from 240hz VT1125 do work over DisplayPort for a VT4500 60hz. Those settings had some issues with freesync over HDMI though. The default 240hz VT1160 pictured above had no problems with freesync.

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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by Chief Blur Buster » 10 Dec 2021, 17:17

JDnoob wrote:
10 Dec 2021, 17:09
I must note that vertical totals over 3789 did not work for me over DisplayPort but only over HDMI. I have an AMD card. Over DisplayPort, I would first have to set the vertical total to 3789 to derive a refresh rate 73.402hz and then manually lower the refresh rate to 60hz from there.
Fascinating; thanks for this detailed testing! I had not fine-tested QFT behaviorial differences between DP and HDMI, so this is a very good catch:

So that means it's HDMI that reliably supports QFT 60Hz VT4640.

For DP, have you tried setting the radio button on Back Porch instead and increasing the back porch instead of Vertical Total? Are there behavior differences on DP if you do that? With FreeSync enabled? With FreeSync disabled?
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Forum Rules wrote:  1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
  2. Please report rule violations If you see a post that violates forum rules, then report the post.
  3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!

teo
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Re: First-Timer: XG2431 Pursuit Camera Photos By Hand-Wave Smartphone

Post by teo » 12 Dec 2021, 15:41

Chief Blur Buster wrote:
08 Dec 2021, 13:55
Also try editing the Back Porch instead of the Vertical Total; to create your VT4500. This only works with the DisplayID / CEA861 extensions (normally reserved for 360Hz and up), because the old 4-slot area does not support ultralarge Back Porches due to legacy reasons.
I haven't had a chance yet to test HDMI, but back porch adjustments via DP didn't seem to help at all. I had to go down to 3200 back porch (resulting in VT4289) before I got more than a black screen.
backporch.JPG
backporch.JPG (124.39 KiB) Viewed 12983 times

re: pursuits of the pre-tuned refresh rates, how precise does a QFT resolution need to match the pre-tuned refresh rate to use the preset? for example, you're saying that 180hz has a built-in strobe preset but there's no built-in detailed resolution at that refresh rate. is the correct way to ensure I'm using the built-in strobe presets by getting the proper VT (240/180*1125=1500) and then manually setting the refresh rate to 180.0 Hz?

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