Hi guys, I've sent new images for the Pi 4b and Pi 5 to Andy for testing, with a view that they be deployed on the downloads page. These both use the 6.1.69 kernel which is the very first version where the Raspberry Kernel and the PREEMPT_RT patch align perfectly. Hopefully over the last 6 weeks, the pi5 is better supported now.
*Raspberry Pi 4b/400* https://drive.google.com/file/d/1Bzx_PqRqdJVTMPlNMEG7z_RjJHf7QcDX/view?usp=sharing *Raspberry PI 5* https://drive.google.com/file/d/1HBXliMQE-OvU0PQPYEOK3OqJz0-CTO5K/view?usp=sharing For initial login credentials, and initial configuration, please refer to the download page https://linuxcnc.org/downloads/ Rod Webster *1300 896 832* +61 435 765 611 Vehicle Modifications Network www.vehiclemods.net.au On Sun, 31 Dec 2023 at 01:35, Steffen Möller via Emc-developers < emc-developers@lists.sourceforge.net> wrote: > Rod, > > Thank you for your kind and swift reply. > HDMI sound works perfectly with the Raspbian default. Also, I think this > would find quite some user base, since anyone reusing an old TV or a > feature-rich monitor with the RPi would immediately benefit. I also > mentioned games before :) > > The RPi image we come up with does not need to be perfect. Our users > should just not be surprised with anythin when using it. My wishlist would > be > * A pointer to our manual at all the places where the image could be > downloaded > * The manual describing > - how the image is created so they can contribute > - what not to do with that image > > On a sidenote, please have a look at http://raspi.debian.net/. Nothing on > the RPi5, though maybe this resonates somehow with what we are after. > > Best, > Steffen > > > Gesendet: Samstag, 30. Dezember 2023 um 14:16 Uhr > > Von: "Rod Webster" <r...@vehiclemods.net.au> > > An: "EMC developers" <emc-developers@lists.sourceforge.net> > > Betreff: Re: [Emc-developers] RPi5 + Raspbian + LinuxCNC latency tests - > first impressions > > > > Steffen, > > > > Some good feedback thanks. > > I'm really not surprised things broke on an update because we compile the > > kernel from the Raspberry sources at a specific point in the commit tree. > > It's not a generic Debian build by any means. LIkewise installing a > > different desktop is also asking for trouble. > > > > Having no sound is also not surprising because in the absence of an audio > > jack you are dependent on HDMI and I know other SBC's have issues with > HDMI > > sound. If someone has a solution please let me know > > > > Please bear in mind that this image is over 6 weeks old and there have > been > > several kernel releases and countless commits to the raspberry pi kernel > > since then. > > > > But for me, the main thing is that it's only in the last few days that > the > > kernel version and the PREEMPT_RT patch align perfectly so I am hoping my > > next version is more robust. That has never happened in the life of the > pi5 > > before. > > > > To test latency on the console, you can install the debian rt-tests > > package. I have found that our latency-histogram yields similar results. > > > > I don't think a single 400 usec spike when opening a browser is of > concern. > > Thats not something you do when running a gcode program. > > > > Hopefully I will have some peace and quiet over the weekend to build a > new > > version. > > > > Rod Webster > > *1300 896 832* > > +61 435 765 611 > > Vehicle Modifications Network > > www.vehiclemods.net.au > > > > > > On Sat, 30 Dec 2023 at 21:58, Steffen Möller via Emc-developers < > > emc-developers@lists.sourceforge.net> wrote: > > > > > Heya, > > > > > > Not only that we have a RPi4/5 confusion, you managed to add a Rod/b > one. > > > > > > So, the image Andy pointed to (which I understand has its roots with > Rod) > > > works very nicely. While idle latencies did not exceed 12µs, mostly > below > > > 10. That was truly impressive. Once I got wifi up and initiated some > > > downloads, it doubled to 24µs, much like the value Andy got. When I > started > > > up firefox and selected youtube, I got a single value of 400µs, though. > > > > > > A complaint I have is that there was no sound in the default > installation. > > > The 400µs I like to speculate may be associated with the failed > attempt to > > > perform the respective initialisations. > > > > > > Another complaint is that the image is not stable when it comes to > > > updates. I was curious on the effect that the installation of KDE would > > > have on the latencies, and if the missing sound would install with it. > So I > > > installed the package "task-desktop-kde" with debfoster. That ruined > the > > > reboot since the expected kernel image was no longer found. I made a > > > screenshot with my phone and send it to whoever is interested, but my > hunch > > > is that Rod's new image if depending more on Debian's installation will > > > likely solve such inconsistency issues. > > > > > > Do we have any latency tools that would run without X, so we get a > > > baseline of what software layer is costing us how much? I recall that > we do > > > but latency-test at least does not. I am asking since the > latency-sensitive > > > gaming industry should have some strong incentive to look into what we > are > > > doing but I have not seen too much from them, yet. Ok - this may be > > > something for another thread. > > > > > > Best, > > > Steffen > > > > > > > > > > Gesendet: Samstag, 30. Dezember 2023 um 04:15 Uhr > > > > Von: "Rob M" <ozzyro...@gmail.com> > > > > An: "EMC developers" <emc-developers@lists.sourceforge.net> > > > > Betreff: Re: [Emc-developers] RPi5 + Raspbian + LinuxCNC latency > tests - > > > first impressions > > > > > > > > Umm Rod Old Mate was referring to the my linked images for the RPi4, > not > > > > your ones, the ones I built for other reasons. > > > > > > > > On Sat, Dec 30, 2023 at 1:26 PM Rod Webster <r...@vehiclemods.net.au > > > > > wrote: > > > > > > > > > >None of those images were for the Rpi-5, I thought the RPi4 in the > > > file > > > > > > > > > > Well yes they are. Andy and Steffan are using pi5 variant of my > image > > > which > > > > > is used for the 2.9.1 release from here: > > > > > > > > > > > > > > https://drive.google.com/file/d/1H_q0Ra-27ZDOhquvq179beUZQNVlex1f/view?usp=sharing > > > > > Filename (with rpi-5 in it): > > > > > rpi-5-debian-bookworm-6.1.61-rt15-arm64-ext4-2023-11-17-1520.img.xz > > > > > It was built for the Pi 5's BCM2712 board. > > > > > Username: cnc Password: cnc > > > > > to finalise the installation (wifi, password , locale etc) type: > sudo > > > > > menu-config > > > > > > > > > > If the screen resolution is not right, it should be able to be > fixed > > > with > > > > > a parameter in one of the pi's config files. > > > > > > > > > > I have just completed and tested a 2.9.2 installer for X86 on > Debian > > > 12.4. > > > > > I managed to bypass the raspberry-firmware installation bug in > earlier > > > > > versions (Inherited from Debian) > > > > > > > > > > > > > > https://drive.google.com/file/d/1nw0dGt5aZXVo8k68lLf4N_nzc0wTczAg/view?usp=sharing > > > > > I will also rebuild the images for the Pi4 and Pi5, but I am > kernelled > > > out > > > > > for today! > > > > > > > > > > Rod Webster > > > > > *1300 896 832* > > > > > +61 435 765 611 > > > > > Vehicle Modifications Network > > > > > www.vehiclemods.net.au > > > > > > > > > > > > > > > On Sat, 30 Dec 2023 at 12:00, Rob M <ozzyro...@gmail.com> wrote: > > > > > > > > > > > None of those images were for the Rpi-5, I thought the RPi4 in > the > > > file > > > > > > name would made the obvious, but as this a topic about the 4 I > guess > > > > > there > > > > > > could be some confusion. > > > > > > > > > > > > As for the recent RPi5 image you tried does that have any issues > with > > > > > > screen resolution? Is it stuck on a single resolution? Does it > > > detect the > > > > > > display it's attached to ? These issues, as mentioned > previously, a > > > game > > > > > > stopper for myself. If they aren't an issue could you say what > > > > > > kind-brand-model display you're using ? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Sat, 30 Dec 2023, 11:40 andy pugh, <bodge...@gmail.com> > wrote: > > > > > > > > > > > > > On Sat, 30 Dec 2023 at 00:27, Steffen Möller via Emc-developers > > > > > > > <emc-developers@lists.sourceforge.net> wrote: > > > > > > > > > > > > > > > Andy's image was a success - I just did not know the > passwords. > > > > > > > > > > > > > > I mentioned it in a previous message, but it is cnc / cnc > > > > > > > > > > > > > > -- > > > > > > > atp > > > > > > > "A motorcycle is a bicycle with a pandemonium attachment and is > > > > > > > designed for the especial use of mechanical geniuses, > daredevils > > > and > > > > > > > lunatics." > > > > > > > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > Emc-developers mailing list > > > > > > > Emc-developers@lists.sourceforge.net > > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > Emc-developers mailing list > > > > > > Emc-developers@lists.sourceforge.net > > > > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > > > > > > > > > _______________________________________________ > > > > > Emc-developers mailing list > > > > > Emc-developers@lists.sourceforge.net > > > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > > > > > > _______________________________________________ > > > > Emc-developers mailing list > > > > Emc-developers@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > > > > > > _______________________________________________ > > > Emc-developers mailing list > > > Emc-developers@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > _______________________________________________ > > Emc-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
