possible to safely force 6bit in win7? (6+2frc panel)

jordan

Hello I am wondering if there's a way to safely force 6bit color WITHOUT the frc? With windows 7 of course since anything newer can't do 6bit I guess. I would never consider 6+2 but I already have a sun vision rlcd monitor in my possession for awhile now, thinking of at least retrying it before listing it on eBay(unless anyone here is interested in it) if it's possible to safely run 6bit only without +2frc with win7.

macsforme

Have we established whether this is possible via EDID override in Windows?

There are a few HP zbook laptops at work with apparently native 6-bit screens, which appear very stable and calm to me. Windows 10 display settings reports 6-bit color, and I can see extra pixelation in the standard Windows 10 wallpaper, suggesting true 6-bit color.

I don’t know whether this is possible on an external display via EDID override. When I get a chance, maybe I’ll test that with my Epiphan capture card with a tweaked EDID.

jordan

macsforme I'm not exactly sure. I will say that I know Nvidia quadro gpus with their quadro driver actually allows you to import a edid that instructs the driver but unsure if a modified edid imported would actually turn off the frc. If you can test on the card that would be awesome! Multiple people have said that 6bit only is no longer possible on modern windows so thought all win10 isn't capable unless it that's for versions after 1809

macsforme

jordan Multiple people have said that 6bit only is no longer possible on modern windows so thought all win10 isn't capable unless it that's for versions after 1809

Quite possibly Windows 10 does not allow you to set 6-bit color electively, but as I mentioned above, several laptops at my work do indicate 6-bit color in Windows 10, and there is pixellation on the desktop to match.

Unfortunately, my initial experiments with uploading a modified EDID with 6-bpc color to my Epiphan card did not cause Windows to report 6-bit color in the display settings. I tried every output port from my GTX 1080, with various combinations of rebooting (or not) in between connections, and it always showed 8-bit color on the external monitor (capture card). I also booted into an Ubuntu live USB installer (with the 6-bpc color EDID in effect), and Ubuntu also reported 24-bit color. I ordered an EDID spoofing device to try as well, but my initial impressions of this method are not positive. I wonder how the above-mentioned laptop displays are different; possibly something in the BIOS? I may try to dump EDIDs and/or try to determine their display models to investigate further.