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Deceptive Pastry · 04-25-2019, 06:08 PM

I've come to this thread many times and read various pages but haven't found enough info to fix my problems. Wondering if someone can help me understand 2 issues.

Have a TCL S405 4k TV, laptop connected through HDMI, that I often game on. Initially when gaming in 1920x1080 or 1600x900 resolution, the TV or laptop seems to upscale and output to the native res of 4k as displayed when I hit the info button on the TV. The problem is my graphics card can only do up to 30hz at 4k, so as long as it is outputting in 4k I can't get 1080p 60hz even if that is what I have the game set to. I have solved this problem in 95% of games with CRU by deleting or lowering priority of 3840x2160 under detailed resolutions and moving 1080 to the top. This causes the image to be output at 1080p 60hz and the TV properly shows this in the info. Some rare games still give me odd issues, like I can run at 1600x900 60hz but if I set the game to 1080 it will resort to outputting 4k 30hz again. I'm hoping to better understand why this happens.

2nd issue is, sometimes I will lose audio over HDMI. I hit restart.exe, then the HDMI audio device will completely disappear from playback devices and I'm left with only "Speakers". If I unplug/replug HDMI cable to restore default TV settings the HDMI audio device will return. I have tried importing the hdmi-audio.dat extension block but I seem to be missing something there. It seems like if I simply deprioritize 3840x2160 instead of outright deleting it I can get 60hz without losing HDMI audio. But I'm not entirely sure if that is what's solving it.

***ToastyX*** · 04-27-2019, 07:13 PM

(04-25-2019 06:08 PM)Deceptive Pastry Wrote: Have a TCL S405 4k TV, laptop connected through HDMI, that I often game on. Initially when gaming in 1920x1080 or 1600x900 resolution, the TV or laptop seems to upscale and output to the native res of 4k as displayed when I hit the info button on the TV. The problem is my graphics card can only do up to 30hz at 4k, so as long as it is outputting in 4k I can't get 1080p 60hz even if that is what I have the game set to. I have solved this problem in 95% of games with CRU by deleting or lowering priority of 3840x2160 under detailed resolutions and moving 1080 to the top. This causes the image to be output at 1080p 60hz and the TV properly shows this in the info. Some rare games still give me odd issues, like I can run at 1600x900 60hz but if I set the game to 1080 it will resort to outputting 4k 30hz again. I'm hoping to better understand why this happens.

2nd issue is, sometimes I will lose audio over HDMI. I hit restart.exe, then the HDMI audio device will completely disappear from playback devices and I'm left with only "Speakers". If I unplug/replug HDMI cable to restore default TV settings the HDMI audio device will return. I have tried importing the hdmi-audio.dat extension block but I seem to be missing something there. It seems like if I simply deprioritize 3840x2160 instead of outright deleting it I can get 60hz without losing HDMI audio. But I'm not entirely sure if that is what's solving it.

The way it's supposed to work is if GPU scaling is enabled in the driver, lower resolutions are scaled to the first detailed resolution, and the only refresh rates that are available are the ones defined for that resolution. If GPU scaling is disabled, resolutions defined in the EDID (shown in CRU) are sent to the monitor. The driver also automatically adds some common lower resolutions as scaled resolutions if they aren't defined in the EDID, which is how 1600x900 exists regardless. Some games might be trying to switch to 1920x1080 @ 30 Hz for some reason, which would be scaled to 3840x2160 @ 30 Hz if 1920x1080 @ 30 Hz is not defined in the EDID.

The audio issue might be a driver bug. To troubleshoot both issues, I would try just the bare minimum configuration that does what you want.

Try importing this file and do NOT check the "Import complete EDID" option:
.bin

test.bin (Size: 256 bytes / Downloads: 575)

That includes 1920x1080 @ 60 Hz, 3840x2160 @ 30 Hz, and HDMI audio.

Darkhuhn · (Last edited: 04-28-2019, 05:48 PM by Darkhuhn)

Hello,

im trying to enable Freesync support on my non freesync Monitor(Samsung 27jg50) over DP 1.2 with a vega 56 graphics card but no matter what i do, my freesync range wont show up in the Radeon Settings menue. Is it even possible with DP or do i have to use HDMI?

here are my settings:

Did i do something wrong or missed something?

Thanks in advance!

Oceans · 04-28-2019, 08:58 PM

Hello everyone,

I hope to enrich this great forum with a case I haven't found a response to anywhere else.

I'm trying to achieve a UHD 3840x2160 resolution at 60Hz with RGB Chroma 4:4:4 on the following setup:

- HP Pavilion Gaming Laptop (15-CX0012nl) with HDMI 2.0 output from Nvidia GTX 1050 Ti
- HDMI 2.0 cable
- UHD TV Philips 43PUS6503/12 with 4K60 4:4:4 mode activated on the HDMI input in use

The problem is on the 4:4:4 side: altough the RGB or YCbCr444 color selected on the Nvidia control panel, the Chroma 4:4:4 test is failed.

Thanks to the excellent CRU software, after some tweaks, for a brief moment of glory I've been able to obtain a crystal clear 4:4:4.
Too bad, after turning off and on the TV (PC still on and nothing changed in CRU) the 4:4:4 disappeared.
After several hours of failed attempts I'm still not capable of setting it up again.

Immediately after obtaining 4:4:4, I exported the CRU settings (attached) and I took pictures of the main windows (attached too).

Suggestions about the issue would be greatly appreciated.

Thanks in advance!

***ToastyX*** · 04-28-2019, 10:17 PM

(04-28-2019 08:58 PM)Oceans Wrote: The problem is on the 4:4:4 side: altough the RGB or YCbCr444 color selected on the Nvidia control panel, the Chroma 4:4:4 test is failed.

Thanks to the excellent CRU software, after some tweaks, for a brief moment of glory I've been able to obtain a crystal clear 4:4:4.
Too bad, after turning off and on the TV (PC still on and nothing changed in CRU) the 4:4:4 disappeared.

You shouldn't have to change anything with CRU to get 4:4:4. Either the video card is not sending 4:4:4 like it should, or the TV is converting 4:4:4 to something else. Make sure the bit depth is set to 8 bpc because there's not enough bandwidth for 10/12 bpc 4:4:4 at UHD 60 Hz.

***ToastyX*** · 04-28-2019, 10:17 PM

(04-28-2019 05:42 PM)Darkhuhn Wrote: im trying to enable Freesync support on my non freesync Monitor(Samsung 27jg50) over DP 1.2 with a vega 56 graphics card but no matter what i do, my freesync range wont show up in the Radeon Settings menue. Is it even possible with DP or do i have to use HDMI?

The FreeSync data block is for editing FreeSync ranges with HDMI. It's not for enabling FreeSync on non-FreeSync monitors.

wolpers0815 · 04-28-2019, 11:52 PM

I have an issue when connecting a Geforce 1080 with my new Sony 65ZF9 with a HDMI 2.0b cable capable of 18Gbps. At 3840x2160 with 30Hz in RGB mode the Nvidia Control Panel allows me for selecting either 8 or 12 bit. What about 10 bit? At 3840x2160 with 50Hz in RGB mode the Nvidia Control Panel allows me for selecting only 8 bit. OK, 12 Bit is impossible with HDMI 2.0. But what about 10 bit? That would mathematically / theoretically be possible in my setup according to https://en.wikipedia.org/wiki/HDMI#Refre...DR10_video

Is it possible to force the driver using 10 bit at 3840p50 or at least at let's say 3840p24 with CRU?

Darkhuhn · 04-29-2019, 01:04 PM

(04-28-2019 10:17 PM)ToastyX Wrote:
(04-28-2019 05:42 PM)Darkhuhn Wrote: im trying to enable Freesync support on my non freesync Monitor(Samsung 27jg50) over DP 1.2 with a vega 56 graphics card but no matter what i do, my freesync range wont show up in the Radeon Settings menue. Is it even possible with DP or do i have to use HDMI?
The FreeSync data block is for editing FreeSync ranges with HDMI. It's not for enabling FreeSync on non-FreeSync monitors.

Hey, okay, but is there a way to enable it for non freesync monitor, but with Displayport instead of HDMI? I got it to work over HDMI,but whenever i try it with displayport i cant get the freesync range to show up in the AMD Radeon software. My v-rate is set to 50-120 Hz

***ToastyX*** · 04-29-2019, 01:18 PM

(04-29-2019 01:04 PM)Darkhuhn Wrote: Hey, okay, but is there a way to enable it for non freesync monitor, but with Displayport instead of HDMI?

No.

***ToastyX*** · 04-29-2019, 01:18 PM

(04-28-2019 11:52 PM)wolpers0815 Wrote: I have an issue when connecting a Geforce 1080 with my new Sony 65ZF9 with a HDMI 2.0b cable capable of 18Gbps. At 3840x2160 with 30Hz in RGB mode the Nvidia Control Panel allows me for selecting either 8 or 12 bit. What about 10 bit? At 3840x2160 with 50Hz in RGB mode the Nvidia Control Panel allows me for selecting only 8 bit. OK, 12 Bit is impossible with HDMI 2.0. But what about 10 bit? That would mathematically / theoretically be possible in my setup according to https://en.wikipedia.org/wiki/HDMI#Refre...DR10_video

UHD 50 Hz and 60 Hz use the same amount of bandwidth. That table is based on CVT-R2, which isn't what TV resolutions use. You should be able to enable 30-bit deep color (10 bpc) in the HDMI data block to get 10-bit with 24/25/30 Hz. You might be able to get UHD 50 Hz to use 10-bit with custom timing parameters, but I'm not sure if the driver will allow 10-bit for non-TV resolutions.