Trying to test out the new image elovalvo, your work is appreciated, but just a few comments
For some reason, every image I download from you (this is the 4th so far), it says the image is corrupted when I unpack the rar files. Ive even redownloaded and it still says corrupted but images appear to load fine.
Unpacked, this image is 8gb so it takes a long time to load it to sd card, I think it took me like 3-4 hours or something.
Lastly, what power supply/setup are you using? When I load the 2.9pre_rt64a on my setup it is incredibly power hungry. it boots the os, but trying to do anything causes huge latency spikes related to not enough voltage. I can assume the improved latency is related to the power draw, but ive only been able to successfully run these images on a CM4 with 12v power supply. this newest one with even latency improved even more(2.9pre_rt64b), I cannot fully boot to os on 2 of my setups so far(normal RPI4). I will try a few more later today, and report back.
That being said, I have had unwavering success with the 32bit 5.4 images you posted some time ago, and have it loaded on several of my setups without issue. Thank you for your work.
Dear cakeslob,
I preferred to use a complete image (and therefore inevitably large) to avoid having to redo a series of commands that are reported in the first post of the topic and that allow you to change the 64-bit operating system with the Preempt_rt and load the version of LinuxCNC compatible with this.
In any case, the image is ZIP-ped and not RAR-red, so as to be able to use the Raspberry Pi Imager directly without unpacking the archive.
Even for the installation I did not have the problems that you report.
I used a common PC with the Raspberry Pi Imager using a USB 3.0 card reader with an SD card at least class 10.
The procedure in this case takes about 10-15 min.
The power supply, as reported in
www.raspberrypi.org/products/raspberry-p...el-b/specifications/
must provide a power of at least 3 Amps.
Check your power supply.
