Freesync option is greyed out in AMD Radeon panel.
So I already did some configuration in CRU:
It should be noted that CEA-861 wasn't present in extension blocks, I had to add it manually, just like all of its data blocks.
I'm using HDMI to DVI-D adapter, which makes it possible to use 85 hz without pixel clock patch, but I installed the patch anyways.
I also edited my Display Properties, increased the limit, included everything and changed all the names and ID's to random gibberish.
EDIT: Without HDMI to DVI-D adapter, changing all monitor profiles (not just the active), and replugging my monitor afterwards I was able to enable Freesync on my monitor.
With one flaw.
It was completely black, no image whatsoever.
I had to plug in the adapter to get my display to work, but that disables Freesync.
AMD left a notification that Freesync worked, that's how I know it (kinda) worked.
Enable Freesync on BENQ G2220HD DVI-D
- Chief Blur Buster
- Site Admin
- Posts: 11653
- Joined: 05 Dec 2013, 15:44
- Location: Toronto / Hamilton, Ontario, Canada
- Contact:
Re: Enable Freesync on BENQ G2220HD DVI-D
A few people were able to get FreeSync working on DVI-D, but it's very hit and miss. Not all adaptors work and, in theory can force FreeSync on a DVI-D to DVI-D since FreeSync is port-agnostic (FreeSync works on CRTs too!). For those familiar with blanking intervals -- VRR video signal topology is just simply a dynamic continuously-changing vertical total (resizeable VBI between refresh cycles to vary the time interval between the starts of refresh cycle scanouts).
The most common weak links preventing FreeSync from working is:
- Missing FreeSync extension block data (fixable via ToastyX)
- Display never designed to tolerate varying refresh rates
- Drivers having an arbitrary prevention on a non-HDMI non-DP port despite an overridden EDID
- Adaptors that fail to pass through a varying refresh rate signal
For the analog case, one needs to output HDMI and use HDMI-to-VGA adaptors that are 1:1 dotclock.
It takes lots of trial and error (cherrypicked VGA and DVI displays, combined with cherrypicked adaptors) to find a combination with successfully working uncertified and hitherto untested VRR.
Interesting to note, among the oldest known displays that "accidentally" works with FreeSync are roughly 1980s or 1990s "MultiSync" CRTs -- long before "variable refresh rate synchronized to frame rates" was conceptualized. Some CRT's tolerate a variable blanking interval by accidental design of robustness (of their multisync circuitry).
The most common weak links preventing FreeSync from working is:
- Missing FreeSync extension block data (fixable via ToastyX)
- Display never designed to tolerate varying refresh rates
- Drivers having an arbitrary prevention on a non-HDMI non-DP port despite an overridden EDID
- Adaptors that fail to pass through a varying refresh rate signal
For the analog case, one needs to output HDMI and use HDMI-to-VGA adaptors that are 1:1 dotclock.
It takes lots of trial and error (cherrypicked VGA and DVI displays, combined with cherrypicked adaptors) to find a combination with successfully working uncertified and hitherto untested VRR.
Interesting to note, among the oldest known displays that "accidentally" works with FreeSync are roughly 1980s or 1990s "MultiSync" CRTs -- long before "variable refresh rate synchronized to frame rates" was conceptualized. Some CRT's tolerate a variable blanking interval by accidental design of robustness (of their multisync circuitry).
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter
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!