Rod,
You referenced the download page and so I just went through
https://linuxcnc.org/downloads/ again and liked it a lot. Very clear, many
thanks! Whoever wrote that - many thanks! My initial reflex was like "Our
documentation should be as good or better" and then thought that maybe the
documentation should in contrary just depend on the download page to know best
what to download and we should possibly even minimize our LinuxCNC
documentation on OS install questions with a pointer to the Download page?!?
I downloaded the RPi5 image , ran xz -dt on it with no complaint, but then got
a complaint by rpi-imager, the image size would not be a multiple of 512. That
was with the same SD that had held the previous version. Did anybody else get
that message, too? I ran this with another machine, with a USB SD adapter, so
something could be off. Will try another download and another machine, but
should someone else run into this, please kindly shout out.
Happy New Year to everyone,
Steffen
> Gesendet: Sonntag, 31. Dezember 2023 um 20:06 Uhr
> Von: "Rod Webster"
> An: "EMC developers"
> Betreff: Re: [Emc-developers] RPi5 + Raspbian + LinuxCNC latency tests -
> first impressions
>
> 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"
> > > An: "EMC developers"
> > > 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
