AMD/ATI Pixel Clock Patcher

[the9quad]

(12-21-2013 02:52 PM)Black Octagon Wrote:  Which of the two worked?

Just clicking the patch again, gives you an option to restore.

Restore>Reboot>Blu-rays!

[nzryan]

Hi Toasty, 4k Update.

I'm getting a little closer, This projector has EDID rev 1.4, and something to do with the extension block.

If I create a CRU resolution like 3840x2160 @ 35hz, it does not show (no custom resolution/refresh rates for 4k show with extension block included)

It seems as though AMD Drivers are not allowing any custom 4k resolutions even if there is enough bandwidth (Maybe they have locked them out as they are HDMI 2.0 spec, and might be a licensing issue.)

If I exclude the extension block using the CRU util, I cant get access to anything over 1080p resolution (the 3840x2160 resolutions is not showing anymore).

If I create my own custom EDID (by exporting/editing the CRU one with extension excluded), then add a monitor range definition block set min/max scan rates etc, the custom resolution 3840x2160 @35 now shows!, but get 'frequency is out of range' red error from projector if I select it.

I tried making a lcd reduced 3840x2160 @ 30 (knowing 30 is accepted with-out edid manipulation ), I still get the frequency is out of range error.

Thanks,
Ryan

[ToastyX]

(12-21-2013 02:51 AM)Dragonheart Wrote:  A little bit offtopic, but.. There's 2 options in CCC for DVI:
- Reduce DVI Frequency on high-resolution displays
- Alternate DVI operational mode

Does any of them equals reduced blanking? Are they able to affect input lag somehow?

Those are old compatibility options.

"Reduce DVI frequency" was meant to work around DVI signal quality issues with 1600x1200 monitors and older video cards, so it should be disabled.

"Alternate DVI operational mode" is coherent mode, which is now the standard operational mode, so it should be enabled.

"LCD standard" in CRU is equivalent to reduced blanking except for TV resolutions like 1080p and 720p, in which case you can use "LCD reduced" for those.

"LCD reduced" reduces the blanking further for higher refresh rates with some resolutions, but that's non-standard.

None of those options have any significant effect on lag.

[ToastyX]

(12-21-2013 12:16 AM)nzryan Wrote:  I wonder if some sort of other limiter is in kicking in here, my projector does 4096x2160 as well (up to 60hz).

With-out the patcher I can only go to 4096x2160 24hz, and after the patcher it still only allows 4096x2160 at 24hz, if I chose 30hz the main resolution drops again, I would have thought I would be at least be able to go to 4096x2160 at 30hz after patching? (4096x2160 @ 30hz should be only around 280mhz)

The projector can only report 4096x2160 @ 24 Hz. There's no way to define 4096x2160 @ 30/60 Hz in the EDID.

(12-21-2013 11:36 PM)nzryan Wrote:  I'm getting a little closer, This projector has EDID rev 1.4, and something to do with the extension block.

If I create a CRU resolution like 3840x2160 @ 35hz, it does not show (no custom resolution/refresh rates for 4k show with extension block included)

It seems as though AMD Drivers are not allowing any custom 4k resolutions even if there is enough bandwidth (Maybe they have locked them out as they are HDMI 2.0 spec, and might be a licensing issue.)

If I exclude the extension block using the CRU util, I cant get access to anything over 1080p resolution (the 3840x2160 resolutions is not showing anymore).

If I create my own custom EDID (by exporting/editing the CRU one with extension excluded), then add a monitor range definition block set min/max scan rates etc, the custom resolution 3840x2160 @35 now shows!, but get 'frequency is out of range' red error from projector if I select it.

I tried making a lcd reduced 3840x2160 @ 30 (knowing 30 is accepted with-out edid manipulation ), I still get the frequency is out of range error.

The projector might not support the "LCD reduced" timing parameters, and "LCD standard" doesn't have the standard timing parameters for 3840x2160 @ 30 Hz yet.

Try importing this file in CRU: http://www.toastyx.net/2160p60-hdmi.dat

If the video card and driver really support HDMI 2.0, then that should work. Otherwise, you will only get 30 Hz.

[nzryan]

(12-24-2013 09:56 PM)ToastyX Wrote:  The projector might not support the "LCD reduced" timing parameters, and "LCD standard" doesn't have the standard timing parameters for 3840x2160 @ 30 Hz yet.

Try importing this file in CRU: http://www.toastyx.net/2160p60-hdmi.dat

If the video card and driver really support HDMI 2.0, then that should work. Otherwise, you will only get 30 Hz.

Hi Toasty, thanks for that, looks like you are right about the projector not supporting the lcd reduced timings.

That .dat file you gave me worked for 30hz but would not show the 60hz, after a lot of playing around it would appear to be ANOTHER LIMITER AT PLAY!.

I can set what ever timings/refreshes I want (like 27hz or 31hz at 4k (with lower porches etc as long as the pixel clock is 297mhz or lower) they will show.

but as soon as I go over 297mhz pixel clock, the resolution/refresh will not show! (like up the back porch by 1 pixel making the clock 297.02mhz and it wont show, drop it back by 1 down to 297.00mhz and it shows)

Any chance you can have a poke around to see if you can find this limiter as well??

Thanks,
Ryan

[ToastyX]

I'm aware of that limit and can get around it, but I didn't include it in the patch because current HDMI implementations start to have signal quality problems beyond that point, and if the driver actually supported HDMI 2.0, you shouldn't even need the patch.

You can play around with this: https://www.monitortests.com/atikmdag-pa...i-test.zip

That should make 3840x2160 @ 60 Hz available with the .dat file I gave you, but it's not likely to work. The video card, driver, projector, and cable all have to support HDMI 2.0 speeds for that to work. You might be able to get around 320-340 MHz pixel clock before it starts having problems.

[XoR]

tested AMD pixel clock patcher today on HD5830 HDFury DVI-D to VGA converter and some 19" CRT to see how much I can crank this HDFury thing up and it seems limit was raised from ~165MHz to exactly 230MHz, anything below is fine and anything higher will look just like with previous limit: blocky

there is another limit apperently, how to remove it?

will test it soon on HD7950 and GDM-FW900

ps. those cards obviously do have VGA outputs but newer like R9 290X lack them and so to buy them I need some form of support. 300MHz limit would be more reasonable than 230MHz

[ToastyX]

That adapter can only handle single-link DVI. You're hitting the point where the signal switches from single link to dual link. I can't raise it further without affecting monitors that need dual-link DVI.

Here is a special version that raises the limit to 300 MHz: https://www.monitortests.com/atikmdag-pa...-1.2.1.zip

[XoR]

I tested my main home setup HD7950+GDM-FW900 and somehow here past 230MHz nothing is displayed at all. Monitor goes black, switches from time to time on and if displays anything it is garbage. Funny enough without patch there is the same behavior but obviously with blockiness artifacts below 230MHz

so it seems there is another limit there. Will test this new version on HD5830+LG CRT when I get to work, which will be monday. There I have Win7 64bit and 13.4 or something like that and going past 230MHz produced workable image but blocky. At home I have Win 8.1 + 13.11. Tried DVI-D port and HDMI and not image at all

[Shogun]

Hello Toasty, got a question for you in regard of an Active adapter

Goy myself a lappy Asus G75 VW that has a nvidia 670M, which has 1 hdmi, 1 vga and 1 mini DP.

I'd like to bring my lappy to a lan party ad use my Qnix 1440p at 120hz, so i went and did some research and bough this specific adapter.

http://www.ebay.com.au/itm/BIZLINK-DISPL...35cdc0d06b

It states that is a dual link D that will support resolution up to 1440p/2560*1600, however, im not sure about the refresh rate.

Do you know if it's possible get at least 110hz using that kind of adapter while using that adapter, connected to the Qnix monitor?
And if so, what is the procedure to get it done?

Since my lappy has a mini DP. I'll be using a mini DP to DP cable and then connected to the dual link D cable to the adapter, do you think that by doing this i might get some restrictions?

I recall seeing that nvidia control has a custom resoluton function, in which you can setup your resolution and refresh rate, hopefully thast will be it, but if not, please let me know.

Aside from this, the qnix is working just fine at 110hz on my PC, i dont use 120hz because i get some weird line coming across, tried a different DVI Dual link cable (high quality) and the same thing appeared, so i guess that must be the monitor struggling a bit.

Thanks for your help.