Hello, I know some poor performance of X11 on older devices, very old > 10 years device need to adjust screen resolution and keep it low for good performance. On new hardware likely is driver issue cutting performance… if you want to understand how is the issue, you need to do many tests and try many Linux distro / different DE for get best performance and locate bad software “component” just don’t work on your device.
You get issue like monitor misconfiguration on X11, Yes, I read about on Arch Wiki, not all monitors can automatically get right configuration and bad monitor layouts ends to bad performance/glitches or stranger behavior, much many you can think.
So, next if you want, you will to make one spare partition on your drive and install on it another Linux distro or another DE, this is my guess cause I get more issue with Linux and new hardware running “generic” Linux drivers is hard to tune on really new devices…
If I install xf86-video-intel, performance gets a lot better but the system is unusable since most apps have this weird behavior where I can’t click anywhere and content flickers all the time.
However, if I set DRI to 2 on /etc/X11/xorg.conf.d/20-intel.conf, this weird issue is fixed but performance is trash again.
Well, you are connected display port monitor, then try to connect it with hdmi cable and see if working with all x server defaults (clear manual conf).
Better if you start from live usb system, and you can see among if display port or hdmi connection is fine under XFCE live user…
Tried disconnecting everything and using just the external monitor directly with HDMI, with no success.
Also tried using a Manjaro Live USB just to do some testing with a different distro, same result.
At this point, I’m just assuming X11 is too “heavy” for these integrated graphics. Will keep animations disabled and live with it until Wayland is compatible enough with everything I want. Or move away from Gnome, which I don’t really want since I’m using it for so many years and I’m not as productive with anything else
While testing other distros, specifically Ubuntu, I noticed that they already have support for Fractional Scaling so I did some research on how to add this to Arch since I’m using high-resolution displays. I found this page on arch documentation and after installing mutter-x11-scaling, I noticed that I had no lag anymore. The fractional scaling is not even working yet but the animations are really smooth
If some have this issue, try installing mutter-x11-scaling, maybe it will fix it for you as well.