Second screen scaling question on Fedora 40

Hello FW users!!

I have a FW13 AMD with Fedora 40.
And as a second screen, I have an LG 34" (2560x1080).
My issue: Fedora think that my secondary display is smaller than 13", so the font size is really big on this secondary screen. I’d love to set a ratio scaling under that 100%. Can someone help me?
Maybe there another way to do this…

Thank you !

Hi Amoun, thanks for taking time to read my post. But no, I’m not replicating the screen. Each display have there own applications.

Is this x11 or Wayland? X11 will let you set monitor dpi in xresources, and in GNOME Wayland you can use per monitor scaling.

Hi,
In my case this is Wayland.
I have try this or this one but
gsettings set org.gnome.mutter experimental-features "['scale-monitor-framebuffer']"
has no effect even after reboot and with sudo.
If someone use HiDPI, I would be happy to know how to achive this.

Regards

Have you restarted your computer after enabling scale-monitor-framebuffer? That did it for me. When you click on the monitor in display settings and it takes you to a screen for that specific monitor, it will show a scaling slider if it’s working.

GNOME shell and mutter version 47.0-1, been working since 45 for me.

Yes, I restarted my FW.
and $ gsettings get org.gnome.mutter experimental-features
give me: [‘scale-monitor-framebuffer’]
So this is set but I can’t change scaling to something else than 100 or 200…
Any idea??
Regards

Finally I did the steps given here “enable the option for all users” (because I have two users on my FW) and now I have more options about scaling values. But I’d like to reduce the scale to 75% maybe, not make it bigger.
I’ll continue to look a this point.
Regards

Update:
Finally, here is what I did:
Using screen parameters, I set the scaling factor to 175% for my FW screen (13", 2256x1504, ratio 3:2) and let it at 100% for my external screen (LG 34", 2560x1080, ratio 21:9)
And using gnome-tweaks, I set the font scaling factor to 0.73.
I’ll do more fine tuning, but for the moment this is not so bad.
I’ll also change cursor size to get something nicer.