Proposal RPi Linuxcnc Image Based on Raspi OS All welcome/encoraged to comment

f355 wrote:

which version of LinuxCNC you're on? before 2.9.5 (I think) it required /sys/kernel/realtime to be present, which is not the case in the Pi kernels. if you're on 2.9.4, you can work around it by setting LINUXCNC_FORCE_REALTIME env var to 1 (I just do 'echo "export LINUXCNC_FORCE_REALTIME=1" >/etc/profile.d/linuxcnc-force-realtime.sh'), or update to a later version.

Just built linuxcnc-2.9.7 on trixie, still appears to need the export, no big issue really.


Don't know if XFCE is the way to go or the LXDE version that comes with raspios.

interesting, the check was removed quite a while ago . I wonder what else does it want.

as to LXDE vs XFCE, I'd probably go with the latter, it's true and tried, and almost no one uses the former - Pi OS uses Wayland and some Wayland-based desktop environment by default, I don't think many people switch to Xorg apart from us.

I got pretty reasonable results on the RPi5 even with Wayland and LXDE.
Enough that software step generation might be an option for a mill. I was surprised by that.
I've had to go back to the basics with pi-gen, was having issues with it deciding to switch from the graphical target to multiuser.
I've got a bunch of images to test, so stay tuned.
But I think once this is nailed it will be easier to get reproducible results. You've convinced me regarding the kernels. So much easier. Thanks