Custom Resolution Utility (CRU)

[falkentyne]

(11-20-2015 08:53 AM)Spec-Chum Wrote:  

(11-20-2015 02:35 AM)ToastyX Wrote:  

(11-19-2015 08:42 PM)Spec-Chum Wrote:  My new monitor (Acer XR341CK) can do 85hz, but every time I change anything with CRU it disables FreeSync, as in it disappears completely from CCC.

I've tried the new CRU (v1.2.3) and changed the range from 30-75 to 30-85 and even just doing this prevents FreeSync; this is without even creating a new 85hz option in CRU.

Any ideas?

I don't have a FreeSync monitor, so I don't know what's required for FreeSync to work. The only document I found from AMD says the EDID must indicate that it is a "continuous frequency display" and report the range of refresh rates that the display supports, which is what CRU does when you include the range limits descriptor. The FreeSync "hack" is just modifying the range limits descriptor with an EDID override like CRU does, so I don't understand why it's not working.

Did you make sure to include the range limits? It should show in the detailed resolution list. CRU doesn't include the range limits by default so you have to enable it.

If that's not working, run reset-all.exe and restart.exe. Then use MonInfo to save the EDID to a .bin file and post it here. I want to see if there's anything else that might be required.

Yeah, it's showing in the Detailed Resolution list, it says: "Range Limits: 30-85Hz, 160-160 kHz, 600Mhz".

Adding the 85Hz does work in that I can select 85Hz using CCC but it disables FreeSync completely, you can't even select it.

Here's the original EDID bin file:
http://1drv.ms/1l90UJ1

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OK, just having a quick play.

Even doing nothing but adding the default range into the details description breaks FreeSync. It's almost like CRU isn't creating the correct type of EDID.

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Just importing the original .dat file into CRU and not touching it also disables FreeSync lol

What's going on?

I can't help with this, but it's probably the exact same thing that makes 50hz refresh rate appear, if (or when) it's gone after a completely clean unaltered EDID.

Default clean driver config: lowest refresh rate is 60hz.
Make any change with CRU, even just saving the default config right over itself without making any change: 50hz appears.