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
