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<div class="moz-cite-prefix">Le 09/11/2020 à 08:50, Albert Graef a
écrit :<br>
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cite="mid:CA+rUic1Ckh3C6U83p7O3FfqH9BPBBcMnLEpz7qNVmM=TzxHZZQ@mail.gmail.com">
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<div dir="ltr" class="gmail_attr">On Mon, Nov 9, 2020 at 4:29
AM Linux ROUEN Normandie <<a
href="mailto:linux.rouen@free.fr" moz-do-not-send="true">linux.rouen@free.fr</a>>
wrote:<br>
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<div>It's a good news that Purr Data is working fine on rPi
4. Hopefully, it should be the same with the new rPi 400.<br>
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<div>It's just a Pi4 made to fit into the keyboard, so I don't
see any problems there. There are some issues with cooling,
though, when the Pi4 is running at high cpu loads. I don't
know what they did about that in the Pi400, does it have a
fan or just passive cooling?<br>
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Yes, it has by default <a moz-do-not-send="true"
href="https://cdn.arstechnica.net/wp-content/uploads/2020/11/PXL_20201102_161143562-1440x1009.jpg">a
big passive radiator</a> (the size of the keyboard) on top of the
ARM CPU.<br>
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<div>
<div> Q: I have found on OBS <a
href="https://download.opensuse.org/repositories/home:/aggraef/Raspbian_10/"
target="_blank" moz-do-not-send="true">your
Rapsbian_10 link</a> for downloading
'purr-data_2.15.2+git4757+2d04705d-1.debian.tar.xz' (as
of 03-Nov-2020). Is it the good one?<br>
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<div><br>
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<div>Yep, that's the one. But I'd recommend using the package
repository so that you get automatic updates and all the
dependencies. See the instructions in the wiki at <a
href="https://github.com/agraef/purr-data/wiki/Installation#raspbian"
moz-do-not-send="true">https://github.com/agraef/purr-data/wiki/Installation#raspbian</a>.
Also note that those packages will only work on a stock (32
bit) Raspbian, not on one of the 64 bit flavors that can be
found on the web.<br>
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Okay. I will need to check if the Raspberry Pi OS delivered with the
rPi 400 is a 32 or 64-bit OS. Currently on the download page of the
Foundation it's a 32-bit.<br>
In the meantime I'm learning that now <a moz-do-not-send="true"
href="https://manjaro.org/downloads/arm/raspberry-pi-4/arm8-raspberry-pi-4-kde-plasma/">Manjaro</a>
(20.10) and <a moz-do-not-send="true"
href="https://ubuntu.com/download/raspberry-pi">Ubuntu Desktop</a>
(20.10) are official versions for the rPi 4 / rPi 400, but both are
only in 64-bit. So based on above they will not be compatible with
the current Purr Data for rPi.<br>
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<div>Based on my reading, it seems we need to blacklist
the internal Audio for being able to properly use the
external one.<br>
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<div>You don't have to do any of that. Just plug the USB
device into the Pi, configure it as the ALSA (or Jack) audio
I/O and you should be set. That way you can keep using the
built-in soundcard for other purposes. If you disable the
built-in soundcard then may run into trouble because Purr
and other applications will fight over access to the device.<br>
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Well noticed.<br>
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<div> I'm currently using either <a
href="https://www.amazon.fr/dp/B01BNQERRQ/ref=pe_3044141_185740131_TE_item"
target="_blank" moz-do-not-send="true">CSL-1</a> or <a
href="https://www.amazon.fr/dp/B07MPBVRNF/ref=pe_3044141_185740131_TE_item"
target="_blank" moz-do-not-send="true">CSL-2</a> when
I need to have a second Audio device under GNU/Linux /
ALSA / JACK2</div>
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<div>Yeah, those will work fine, just as well as pretty much
any of those cheap USB audio devices.</div>
<div><br>
</div>
<div>Good luck, and let us know how Purr works on your Pi400
when you get it!</div>
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I will do it.<br>
Thanks. Joseph<br>
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<div>Albert</div>
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<div>Now, I will need to wait at least 4-5 weeks before
getting my Raspberry Pi 400 Kit (AZERTY) as it's
currently (already) in stock shortage.<br>
<br>
Best, Joseph<br>
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<div><br>
Le 08/11/2020 à 23:50, Albert Graef a écrit :<br>
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<div>Hi Joseph,</div>
<div><br>
</div>
<div>Last time I tested Purr on the Pi4, it worked
fine there. That was quite some time ago, though
(probably around Purr 2.9/2.10), so you'll have to
give it a go yourself to see how well the latest
version works there.</div>
<div><br>
</div>
<div> The only issue I remember was with the rather
lousy built-in soundcard of the Pi4, which can be
overcome with a cheap external USB audio device
(e.g., <a
href="https://www.amazon.fr/UGREEN-Adaptateur-Compatible-Raspberry-Microphone/dp/B01N905VOY"
target="_blank" moz-do-not-send="true">https://www.amazon.fr/UGREEN-Adaptateur-Compatible-Raspberry-Microphone/dp/B01N905VOY</a>
is the one that I often use, but any half-decent USB
sound device should do the trick).</div>
<div><br>
</div>
<div>Good luck!</div>
<div>Albert<br>
</div>
<div><br>
</div>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Nov 6, 2020
at 8:20 PM Linux ROUEN Normandie <<a
href="mailto:linux.rouen@free.fr" target="_blank"
moz-do-not-send="true">linux.rouen@free.fr</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div> Hello to the List,<br>
<div><br>
I'm looking for an additional, very affordable
but enough powerful PC under GNU/Linux for CAM
(computer-aided music), Programming, Home
automation, etc.<br>
<br>
Currently my choice is going for the <a
href="https://www.raspberrypi.org/products/raspberry-pi-400/?resellerType=home"
target="_blank" moz-do-not-send="true">very
new Raspberry Pi 400</a> with Raspberry Pi OS,
a Raspberry Pi 4 that has been integrated into a
keyboard, with a complete kit priced at ~ 100 €
here in Europe (106.50 € Tax incl. in France).<br>
<br>
Questions:<br>
- Has anyone tested Purr Data with the Raspberry
Pi 4 (Debian or other distros)?<br>
- If yes, what was your experience, pros and
cons?<br>
<br>
Thanks a lot.<br>
- - - - - - - - - - - - - - - - - - - -<br>
Best,<br>
Joseph Gastelais<br>
<a href="https://www.linuxrouen.fr/wp/"
target="_blank" moz-do-not-send="true">LINUX ♥
ROUEN ♥ Normandie</a><br>
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<div>
<div dir="ltr">Dr. Albert Gr"af<br>
Computer Music Research Group, JGU Mainz,
Germany<br>
Email: <a href="mailto:aggraef@gmail.com"
target="_blank" moz-do-not-send="true">aggraef@gmail.com</a>,
web: <a href="https://agraef.github.io/"
target="_blank" moz-do-not-send="true">https://agraef.github.io/</a></div>
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-- <br>
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<div>
<div dir="ltr">Dr. Albert Gr"af<br>
Computer Music Research Group, JGU Mainz, Germany<br>
Email: <a href="mailto:aggraef@gmail.com"
target="_blank" moz-do-not-send="true">aggraef@gmail.com</a>,
web: <a href="https://agraef.github.io/"
target="_blank" moz-do-not-send="true">https://agraef.github.io/</a></div>
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