X.org + g-sync at 100hz? [SOLVED]

root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

Can someone explain me how the hell i can use nvidia g-sync at 100hz on linux?

i tried xorg modlines but they didnt work, my desktop is still running at 60hz!
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NeddySeagoon · Posted: Tue Mar 22, 2016 8:33 pm Post subject:

root_tux_linux,

What is the vertical refresh rate range supported by your display?
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Computer users fall into two groups:-
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root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

Maybe it'd work if the names in your Modeline and Modes matched...

NeddySeagoon · Posted: Wed Mar 23, 2016 8:42 pm Post subject:

Ant P.

That, and nVidia will ignore modelines unless you invoke the emergency manual override.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

Ok, fixed.. But still 60Hz and not 100Hz.

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

That truncated log tells us your graphics card can theoretically output that resolution and that the monitor's plugged into the correct port. So we can rule those out...

NeddySeagoon · Posted: Thu Mar 24, 2016 9:42 pm Post subject:

root_tux_linux,

Put the entire Xorg.0.log onto a pastebin site please.

I'm not quite sure what I'm looking for but I'll know it when I see it.
Its not in your log fragment anyway.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

NeddySeagoon · Posted: Fri Mar 25, 2016 10:45 pm Post subject:

root_tux_linux,

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

It may be easier to solve this if you can reproduce this on Gentoo first, or at least an unmangled xorg-server and kernel.

root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

OK!

if is use "UseEDID" "false" it works but! I get "out of range" error from my Display!
_________________
Intel Core i7 6700K@4.6GHz, Gigabyte GTX 980 Ti G1, Gigabyte Gaming 7, Hyper X Fury 32GB, 2 TB Samsung EVO 840 Basic
ASUS ROG Swift PG348Q Display
ASUS ROG ASUS G771JW Notebook

NeddySeagoon · Posted: Sat Mar 26, 2016 11:13 pm Post subject:

root_tux_linux,

Option "UseEDID" "false" is the manual override you need.

If your display gives out of range, your mode line is setting up a mode it cannot sync to.
I didn't check it by hand. How did you make it.?

-- edit --

The comment above the modeline is correct.

-- Edit some more --
The Asus site says
Digital Signal Frequency : Display port 73~88kHz (H) / 30~100Hz (V)
So yoh are well out of range of 73~88kHz (H)
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

root_tux_linux · l33t Joined: 21 Dec 2003 Posts: 966

SOLVED!

It's a gnome bug!
gnome sets the refresh rate always back to 60hz even if your config is working!

https://bugzilla.gnome.org/show_bug.cgi?id=655041

Ty, for your help!

changing refresh rate ---> nvidia-settings ---> select resolution ---> select refresh rate ---> merge xorg.conf
After each reboot you can execute ---> nvidia-settings --assign=CurrentMetaMode="3440x1440_100", if you use gnome!

Cybolic · n00b Joined: 13 Jan 2017 Posts: 1