The New 4-core Raspberry Pi

dwijtsma

Arch linux has raspberry pi 2 support! :roll:
http://archlinuxarm.org/platforms/armv7/broadcom/raspberry-pi-2
I guess this means that it is possible to build runeaudio for the pi 2, but I don't know how much work it is.

I got mi pi2 Wednesday, but I don't have time to play with it before Sunday. Is it very complicated to build rune audio with the new arch linux kernel? Otherwise I could try it myself.

ACX

dwijtsma wroteIs it very complicated to build rune audio with the new arch linux kernel? Otherwise I could try it myself.

It isn't, if you follow the cookbook we are preparing... but it's not ready yet. So it would be better to wait for 0.4 release at this point.

popov

Hi

First thank you to all team for the works.
I agree with ACX, we will wait for 0.4 to support RPI, and try to understand how rpi 2 may increased sound quality ?

What is different
CPU, memory
What is equivalent the rest ....

CPU with more speed and more // process mean we will be able to able to do more action with less interval.
For exemple, my choise is to is2 dac (iqaudio) with local USB disk
I don't have nas so the choice look easy... But in fact wifi is not support flac files over 48 mhz (may do 96 but ... no guarenties)
USB shared with network mean lan will be restricted, by the bus and by the processor speed. IP have some advantage... but is less efficient than disk access, and with usb share will introduce IRQ to CPU with will decrease performance. So RPI network to contrôle rune, fine, to have hight music definition, not totaly confiant. increasing cpu speed, memory and parrallel process, may change this .... But for the moment i will keep local USB.
IS2 DAC is fine but for the moment (not a real problem form me) limited to 192 ... to play DSD or 384 you need to transform the signal first .... And RPI 1 is limited .... So we can hope than RPI 2 will be able to support DSD and 384..... If yes maybe a reason to upgrade
the other way to play DSD or 384 files is to use and external DAC... Normaly USB speed is suffisant.... To transmit signa in both sides, form source to CPU and to CPU to extrernal dac...
From a local USB disk this should work. with an network connection .... Not so evident, As i say network introduce more IRQ, so more delay and more "clic". CPU capabilites may reduce that, enought ?
This will change with protocol we will used .... to get information
Internet protocol to Stream i not so bad, they are not to verbose and reduce amont of data. Microsoft or samba share are less efficient. I still notice that with a cifs share you may X 10 the amount of data on network (one file from 1M, may generetad, with retry, errrors .... 10 M on netwok). RPI2 may reduce IRQ impacts, not network volumes... It should be better for NAS, streaming, enought ?

Have RPI will be a good idear to play DSD or hight definition files. Having IS2 dac with DSD support an other one....
Helping all team, and enjoy the music with the actual version an other one 😃

regards

franz159

ACX wrote
dwijtsma wroteIs it very complicated to build rune audio with the new arch linux kernel? Otherwise I could try it myself.
It isn't, if you follow the cookbook we are preparing... but it's not ready yet. So it would be better to wait for 0.4 release at this point.

Hi ACX,
I know the way you work (from the wonderful outcome you have produced) and I also know you cannot (and should not) commit to a specific release date. However, would you be able to share which is your "target" ideal date for 0.4 release?
Many thanks and again keep up with your excellent work!
On my part, I continue to promote it whenever I post on various forums about "liquid music" and low cost streaming.
Regards
Franz

ACX

franz159 wroteI know the way you work (from the wonderful outcome you have produced) and I also know you cannot (and should not) commit to a specific release date. However, would you be able to share which is your "target" ideal date for 0.4 release?

As soon as possible, surely this month. We had to stop the development for a while because both Simone and I have been involved in a job that monopolized our time. Starting from next week we'll put our brains again on the 0.4 version, which is going to be released also for Raspberry Pi 2 and after that to all the other platforms.

franz159 wroteOn my part, I continue to promote it whenever I post on various forums about "liquid music" and low cost streaming

Well that's one of the most appreciated ways to contribute to the project 🙂 Thank you.

nopphong

This is a very good news to me.My pi b+ have some problem play 24/192 files.It just some time (not often) stutter but that no good for audiophile system.I overclock to 1GHz and less problem.Now with new CPU this problem should be solve 🙂

dwijtsma

Good to know that overclocking the CPU helps for playing very high bitrates. Hopefully the pi2 will solve this completely.

Don't have a TV with HDMI, so I couldn't get Arch running. SSH is not installed by default and composite video is also disabled. Couldn't change the tar.gz archive because 7-zip complained about 2 files with the same name. One file is uppercase and the other in lowercase. Long live Windows. 🙁 I could get Raspbian up and running and play with it using xrdp.

Today I will buy a HDMI/DVI adapter so I can install arch Linux. I just found the cookbook_development.txt file. I will try to follow the guide, but somehow I have the feeling that life ain't that easy. Any hint of what I might ran into or what is missing to get this to work? Maybe one day I'll become a Linux master :ugeek:, but currently I still have to learn a lot of Linux basic principles.

dwijtsma

Great start. The Archlinux team doesn't create .img files anymore I can flash on the SD card. Using Windows I can't create 2 partitions on an SD card. I tried Ubuntu using a virtual machine. But once I create the 2 partitions I get strange errors and the SD card is gone in Linux. :shock:

Just found out that I can run Ubuntu from a USB stick, so I don't have to install Ubuntu next to my Windows OS to make this work. Step one is going smooth...

ACX

dwijtsma wroteGreat start. The Archlinux team doesn't create .img files anymore I can flash on the SD card.

Are you following the official guide?

dwijtsma

I don't have Linux on my PC, so I just installed lubuntu on a USB stick. Than I indeed followed the guide and the SD card booted :mrgreen:

Now I follow your cookbook from github:
https://github.com/RuneAudio/RuneOS/blob/master/cookbook_development.txt

Hopefully everything will go smooth. If you have any tips i'm all ears. 😃

dwijtsma

I have come to the following at line 208. Somehow I got the feeling that I should do something other that copy/paste the following to raspberry pi:
# ----->>>> BUILD CUSTOM PACKAGES <<<<----- #
# clone RuneOS repo
git clone https://github.com/RuneAudio/RuneOS.git /usr/local/src/RuneOS

Than I found this:
https://github.com/RuneAudio/RuneOS/blob/master/01_raspberrypi/cookbook_rpi_production.txt

I think this is the cookbook I should have used. I think I can fix this. (I hope :roll: )

dwijtsma

Using my compare tool I now have followed the raspberry cook book. I have come to the point that it gets beyond my capabilities I'm afraid.
I have to download the RuneOS packages but the naming suggest it is for the armv6.
Can I ignore this or do I have a problem now? 🙁

ACX

dwijtsma wroteThan I found this:
https://github.com/RuneAudio/RuneOS/blob/master/01_raspberrypi/cookbook_rpi_production.txt

That's the right one but, as I told you, it's far from being perfect. It needs to be updated and reviewed, then it will be also possible to execute it like an automated script. In the meanwhile you may experiment with that.

dwijtsma

If I will succeed or not, you also learn from failure. 😐

I guess Runeaudio won't work if I don't instal RuneOS.
I guess I destroy arch linux if I do install the current RuneOS

If one of the two guesses is incorrect, please let me know. This evening I will look into the RuneOS files to see if I can make sense out of it. Hopefully I won't loose all hope! 😃

ACX

dwijtsma wroteI guess Runeaudio won't work if I don't instal RuneOS.
I guess I destroy arch linux if I do install the current RuneOS

RuneOS simply is Arch Linux + RuneUI + configurations + custom packages. The cookbook tells you how to assemble all that.

dwijtsma

When I try:

pacman -U ffmpeg-rune-2.5-1-armv6h.pkg.tar.xz

I get:

loading packages...
error: failed to prepare transaction (package architecture is not valid)
:: package ffmpeg-rune-2.5-1-armv6h does not have a valid architecture

Sounds logical. Trying 'pacman -S ffmpeg' isn't a good alternative I guess.
There is a 'PKGBUILD' file. I will try to compile ffmpeg with 'makepkg' later today.

A whole new world opens to me. Hopefully my posts are helpfull to other linux newbies trying to get RuneAudio to work with the new raspberry pi 2 before the experts have time to do it the right way. 😃

Komet

I also tried to get RuneAudio working on the new Raspberry Pi and got it working. But I think you need a little bit knowledge with Linux, it's nothing for Linux newbies.
I've started with the ArchLinux build and then followed a little bit of both cookbooks. Basically I've built all packages (https://github.com/RuneAudio/RuneOS/tree/master/01_raspberrypi/packages) with makepkg and copied over the relevant configuration files to /etc. Some are not mentioned in the cookbook like nginx. Other problems were:

makepkg option --asroot has been removed in newer versions
Samba failed to build but I don't need it so I skipped it
background workers (rune_PL_wrk, rune_SY_wrk) weren't running, maybe I just forgot to enable them
spopd crashed without cache_path and I had to blacklist snd_bcm2835 (I'm using a HifiBerry) because spopd didn't like my asound.conf

So with a little bit experience it's not too hard to get it up and running.

dwijtsma

Is it possible to make an .img file from it? :roll: Win32DiskImager works in both directions I believe. Like a temporary solutions till we have a nice maybe 0.4 version with everything working. If not, at least you gave me some hope. I think I can get it working if I put enough time in it. I like that I learn a lot.

Do you notice improvements with the pi2? Curious you see speed improvements. Can you play flac at very high bit rates for example?

I'm so thankfull for all the work done by ACX, Orion and everyone else working on it. 😃

jnfindley

The Pi 2 not only has four cores where the Pi has one (more cores is in general a good thing for any multitasking OS), but it also runs at a higher clock speed and has more RAM. I don't know enough about ARM to know if the newer processor architecture has other advantages (more instructions and the like). At any rate, I would think that RuneAudio would still run better even if most parts of it were single threaded.

hondagx35

Hi all,

i made a RuneAudio image for the RP2.

The first tests look promising, it runs very smooth and the UI is incredible fast.

With a multi core processor one can do "cool" things.
For example isolating the last two cores from the scheduler and run MPD and other stuff exclusively on them.
Core 2 and 3 isolated and core 3 running MPD.

or
Core 3 isolated and running MPD, cores 0-2 loaded with stress testing software.

MPD plays without issues while the UI is nearly not accessible anymore.

If this will improve the audio quality?

Frank

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