Debian 12 - 2.10 master branch image for the Raspberry Pi 4b/400

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15 Nov 2023 12:01 #285490 by cornholio
Hahaha I knew a while back you were in favour of office.
forum.linuxcnc.org/18-computer/34823-a-f...d-up?start=20#113495

Just a friendly dig old mate.

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17 Nov 2023 01:02 - 17 Nov 2023 01:12 #285676 by McFly
Hi!

Just some regular CNCer, already proficient with my rpi4 8gb and 2.8.  I thought I might try something else, test some stuff.  Been reading around here for some days now.  I tried to run that image (the one from Rod's first post):

rpi-4-debian-bookworm-6.1.54-rt15-arm64-ext4-2023-10-21-1847.img

but it gave me that screen (see attached file).  Seems to be hardware related...
Attachments:
Last edit: 17 Nov 2023 01:12 by McFly.

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17 Nov 2023 02:00 #285677 by rodw
Yes, I get that error too on my older Pi  4b
Lots of others have it working for them.. Just hardware I think

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17 Nov 2023 14:37 #285741 by McFly
Any work around? Switching to a x86 computer?

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17 Nov 2023 20:43 #285777 by rodw
Yes, use X86. I have never used the Pi for linuxcnc. I did spend days trying in the past which is why I built ths installer so there was an easy way and none of the Linuxcnc devs had a working image. 

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17 Nov 2023 20:55 #285779 by cornholio
I've seen that message on my RP-400 but it still boots and runs fine.
I'm going to go out on a limb and judging by "seat of the pants" the RPi-5 is just about on par with a low-end x86 system that is capable of running Linuxcnc.

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24 Nov 2023 20:43 - 24 Nov 2023 20:44 #286427 by eman5oh
Is this a different image than the one on the downloads ,link below? I am unable to get one linked below to work with my mesa 7i76e, I keep getting  following errors even with the servo thread set to 2ms. I had the same config working under 2.8 on the same pi 4b. I remember having to set the system to stay on one core to get it working, is that still needed?

-Thanks


www.linuxcnc.org/iso/linuxcnc-2.9.1-bookworm-rpi4.img.xz
Last edit: 24 Nov 2023 20:44 by eman5oh.

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24 Nov 2023 22:21 #286433 by rodw
The image I built was copied to linuxcnc repos so no.
The later one of mine has some changes around repositories and also added network manager because guys were complaining bout not being able to easilly set the wifi settings (which can be set in menu-config anyway)

2.8 used a 32 bit kernel, this is 64 bit
All of the isolcpus settings are already done for you.
Lots of guys are using this with 1 ms servo period without following errors.
Following errors are related to your tuning, error finishing read is a hardware issue which is a kernel problem affecting mesa cards but we have not seen reports of that on the pi. 

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25 Nov 2023 02:33 #286436 by eman5oh
Thanks for the info and the time you put in making the PI image. I must just have a bum pi4, I get the sculls error at boot but it boots up and runs. I downloaded the image you have linked to this thread and loaded my config after setting the network interface to 10.10.10.1 and leaving wifi off, I ran it for a bit and I got realtime servo thread errors and then the joint following errors, same config runs on my I5 Intel NUC. I wonder if my pi is is overheating or has some other hardware issue. I need to find another pi4 and try again. Thanks!

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25 Nov 2023 06:03 #286440 by cornholio
Checked that the governor is set to performance.

But yeah if it is overheating it will throttle down. A heatsink\fan might help.

But if the NUC is ok I'd stick with that.

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