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- gene_weber
16 Jan 2025 12:38
Replied by gene_weber on topic Raspberry Pi OS PREEMPT RT 6.13 Kernel Cookbook
Raspberry Pi OS PREEMPT RT 6.13 Kernel Cookbook
Category: Installing LinuxCNC
The good news is switching to X11 is trivial.
You can check the session type: wayland
Launch Rasp-config command line tool in a terminal:
Arrow down to "Advanced Options", and enter.
Arrow down to "Wayland Switch between X and Wayland backends", and enter.
If not on the line that says "W1 X11 Openbox window manager with X11 backend", arrow to it and enter.
The popup should say "Openbox on X11 is active" and have "Ok" highlighted. Enter.
It will return to the main screen. Use left-righ arrows to select "Finish". Enter.
Popup asks if you would like to reboot now, with "Yes" highlighted. Enter.
After reboot: x11
Now here's the interesting apples to apples comparison. The only difference between these two pre-jitter-optimization baseline latency runs is Wayland vs X11.
Wayland:
X11:
You can check the session type:
echo $XDG_SESSION_TYPELaunch Rasp-config command line tool in a terminal:
sudo raspi-configArrow down to "Advanced Options", and enter.
Arrow down to "Wayland Switch between X and Wayland backends", and enter.
If not on the line that says "W1 X11 Openbox window manager with X11 backend", arrow to it and enter.
The popup should say "Openbox on X11 is active" and have "Ok" highlighted. Enter.
It will return to the main screen. Use left-righ arrows to select "Finish". Enter.
Popup asks if you would like to reboot now, with "Yes" highlighted. Enter.
After reboot:
echo $XDG_SESSION_TYPENow here's the interesting apples to apples comparison. The only difference between these two pre-jitter-optimization baseline latency runs is Wayland vs X11.
Wayland:
X11:
Time to create page: 0.462 seconds