The New 4-core Raspberry Pi

hondagx35

Hi niconoe

[*]I cannot use hardware volume control with my HifiBerry DAC+. I've described my problem with more detail there: #51734

Replace "" with "PCM" and it will work.

redis-cli hset acards_details snd_rpi_hifiberry_dacplus "{\"sysname\":\"snd_rpi_hifiberry_dacplus\",\"extlabel\":\"HiFiBerry DAC+ (I&#178;S)\",\"mixer_numid\":\"1\",\"mixer_control\":\"PCM\",\"hwplatformid\":\"01\",\"type\":\"i2s\"}"

Frank

niconoe

Replace "" with "PCM" and it will work.

That works perfectly, thanks !

Trond

Hi
New here

Will a AMB Gamma 1 DAC work with Runeaudio on the new Raspberry Pi? Im using it on a Debian system with MPD but want to upgrade my system.

Thanks
Trond

ACX

Trond wroteWill a AMB Gamma 1 DAC work with Runeaudio on the new Raspberry Pi?

Yes, it should. Just try it, it will take you a spare SD card and around 10 minutes of your time.

Trond

ACX wrote
Trond wroteWill a AMB Gamma 1 DAC work with Runeaudio on the new Raspberry Pi?
Yes, it should. Just try it, it will take you a spare SD card and around 10 minutes of your time.

Thanks
I will try it, just has to get a Pi ☺ Was actually going to buy a Olimex lime 2 since it has a SATA port but its easyer to buy a Pi since I can get it localy.
I've been reading that the Pi has problems with usb DAC. Is that not a problem anymore?

Trond

dwijtsma

I think almost all users use a USB DAC or I2S DAC.

gfwerkema

It works for me too with this configuration,like the post on 4mar 2015 from user Tinue,
-Rasp2
-Hifiberry amp+

But the hardware volume control doesn't works too, only the software control.
Is it possible to get the hardware control works?

By the way: Thanks Frank for your image.

kwanying

I'm also having problem enable hardware control on iqaudio pi-dac+ as well.
Try changing to PCM already but it didn't work on pi-dac+

hondagx35

Hi gfwerkema and kwanying,

But the hardware volume control doesn't works too, only the software control.
Is it possible to get the hardware control works?

Please post your debug info like described here.

I'm also having problem enable hardware control on iqaudio pi-dac+ as well.
Try changing to PCM already but it didn't work on pi-dac+

Did you change it like this?

 "{\"sysname\":\"snd_rpi_iqaudio_dacplus\",\"extlabel\":\"IQaudIO Pi-DAC+ (I&#178;S)\",\"mixer_numid\":\"1\",\"mixer_control\":\"PCM\",\"hwplatformid\":\"01\",\"type\":\"i2s\"}"

Frank

unameme

Frank,
I found a minor UPnP bugs, UI shows wrong time of played song(or maybe it shows lenght of all queued songs? Than it may be correct). Second thing, I can't stream in 24 bits, i have to downsample to 16bits otherwise there is just noise in speakers.

And a suggestion - plaing FLAC files from NAS over wifi was a bit laggy from time to time, I increased buffer size to 4096kb and its filling before play to 20%, now it's all fine

I also can't get hardware volume control on IQAudio DAC+

Back to my previous report #862178

after I connected to my wireless network on edimax I swapped back to TP-link dongle, and network still works!

I did a fresh install and I confirm, TP-link dongle works fine after configuring profile on edimax

I had to restart a fresh installed image to succesfully scan for networks

and I didn't need to reboot to scan for networks on first boot now, so it was probably an network issue.

christo4

Hello (first post). I am new to Raspberry Pi, but not new to Linux. First of all, congratulations on this overall achievement! The OS is very nice, and I love the web interface so that I don't have to use a monitor for my music player. I am waiting for an iqaudio Pi-Dac+ to arrive in the mail, but while I wait I am trying to get Runeaudio up and running on my Pi 2 model B for streaming Spotify through the headphone jack. Anyway, I am using the March 4 image posted by Frank. The device connects to Spotify, but it cuts in and out. Do you know of any adjustments I could make to remove the stuttering and hiccups?
On another issue, every time I fire up the web interface, I get this error at the bottom of the window:

Warning: socket_write() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 337 Warning: socket_last_error() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 326 Warning: socket_close() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 327

Is there something I should do to fix this, or just wait for the next image?

barachlo

Hi there,

I am trying to play music via IQAudio DAC+ with RPi2 and Runeaudio but it doesn't recognise the card.

...OK I fix..

1. Install Putty
2. Telnet to RuneAudio IP eg 192.160.1.5
3. Logon user: root password:rune
4. edit /boot/config.txt using vi editor.
5. Restart, nice HiDef audio, plays DSD too!!
6. W00t!

Thanks

hondagx35

Hi christo4,

The device connects to Spotify, but it cuts in and out. Do you know of any adjustments I could make to remove the stuttering and hiccups?

Sorry i have no answer for that.

On another issue, every time I fire up the web interface, I get this error at the bottom of the window:

Warning: socket_write() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 337 Warning: socket_last_error() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 326 Warning: socket_close() expects parameter 1 to be resource, boolean given in /srv/http/app/libs/runeaudio.php on line 327

Is there something I should do to fix this, or just wait for the next image?

This is a known bug on RuneAudio and has nothing todo with the RP2 image.
It only happens then you reboot / shutdown with Spotify as active Playback source.

Frank

falkin

Hi

I have got some time to test new image.
Now KingRex works OK.

I am testing some configuration for multiroom.
Now my laptop is MPD stream server.
Works fine with 3 slaves.
Tomorrow I will try RasPi 2 as a stream server,
then I will send more details.

rgds

Falkin

falkin

OK
i'ts working.

My mpd.conf :

state_file	"/var/lib/mpd/mpdstate"
zeroconf_enabled 	"yes"
zeroconf_name 	"RuneAudio"
bind_to_address "/run/mpd.sock"
bind_to_address 	"any"
port 	"6600"
max_connections 	"20"
user 	"mpd"
group 	"audio"
db_file 	"/var/lib/mpd/mpd.db"
sticker_file 	"/var/lib/mpd/sticker.sql"
pid_file 	"/var/run/mpd/pid"
music_directory 	"/mnt/MPD"
playlist_directory 	"/var/lib/mpd/playlists"
follow_outside_symlinks 	"yes"
follow_inside_symlinks 	"yes"
auto_update 	"no"
filesystem_charset 	"UTF-8"
id3v1_encoding 	"UTF-8"
volume_normalization 	"no"
audio_buffer_size 	"2048"
buffer_before_play 	"10%"
gapless_mp3_playback 	"yes"
mixer_type 	"disabled"

input {
	plugin 	"curl"
}

decoder {
	plugin 	"ffmpeg"
	enabled "yes"
}

audio_output {
	type		"httpd"
	name		"RasPi2 HTTP Stream"
#	encoder		"vorbis"		# optional, vorbis or lame
	encoder		"flac"
	port		"8002"
	bind_to_address	"192.168.1.21"               # optional, IPv4 or IPv6
#	quality		"5.0"			# do not define if bitrate is defined
#	bitrate		"128"			# do not define if quality is defined
	bitrate		"384"			# do not define if quality is defined
#	format		"44100:16:1"
	max_clients     "20"                     # optional 0=no limit
	enabled		"yes"
	always_on	"yes"
	auto_resample   "no"
	auto_format     "no"
} 

audio_output {
	name 		"bcm2835 ALSA_2"
	type 		"alsa"
	device 		"hw:0,0"
	auto_resample 	"no"
	auto_format 	"no"
}

audio_output {
	name 		"bcm2835 ALSA_1"
	type 		"alsa"
	device 		"hw:0,0"
	auto_resample 	"no"
	auto_format 	"no"
}

audio_output {
	name 		"iFi (by AMR) HD USB Audio"
	type 		"alsa"
	device 		"hw:1,0"
	auto_resample 	"no"
	auto_format 	"no"
	enabled 	"yes"
}

UI perfectly working with custom mpd.conf
Very nice job

Working with 3 clients, VLC and 2 RPiB+
connected as My Webradio to:

http://192.168.1.21:8002

slave mpd.conf is identical, except httpd output.

If playing number of the same format audio files, working very fine.
(I am using .wv)
tags are presented OK, cover not.

When my laptop was a server, all slaves was synchronised very good (1 Gb interface and network)
If RasPi2 is server, synchro is poor (not only master - slave, but slave to slave getting up to 1 sec. delay)

When file format is changed, ex. .wv to .flac or .mp4 slaves stops playig.
There is required pres stop and play again.
There is because, as I know, MPD can not change format on the fly.

Tests:

.flac, .wv and .wav up to 24 bit, 352.8 kHz are played OK.
top result, when playing 16 bit, 44.1 kHz .wv (CD)

: top_wv_44.1_kHz_16_bit.png (108.06 KiB) Viewed 3958 times

DXD .flac, 353.8 hHz, 10415 kbps is also played, but not fluent.
top result:

: top_dxd_352.8_kHz_10415_kbps.png (108.37 KiB) Viewed 3958 times

.dff DSD is played locally very bad (a lot of breaks), on slaves some noise:

: top_dsd_352.8_kHz_2822_kbps.png (107.58 KiB) Viewed 3958 times

.mp4
Locally OK.
Slaves - only very bad noise.

rgds

Falkin

bevlar

hondagx35 wroteHi FauDrei,

Can you give us few examples how to isolate and dedicate CPUs?

To isolate a cpu core you have to edit /boot/cmdline.txt:

root=/dev/mmcblk0p2 rw rootwait console=ttyAMA0,115200 console=tty1 selinux=0 plymouth.enable=0 smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0 kgdboc=ttyAMA0,115200 elevator=noop isolcpus=2,3

Name
isolcpus — Isolate CPUs from the kernel scheduler.

Synopsis
isolcpus= cpu_number [, cpu_number ,...]

Description
Remove the specified CPUs, as defined by the cpu_number values, from the general kernel SMP balancing and scheduler algroithms. The only way to move a process onto or off an "isolated" CPU is via the CPU affinity syscalls. cpu_number begins at 0, so the maximum value is 1 less than the number of CPUs on the system.

This option is the preferred way to isolate CPUs. The alternative, manually setting the CPU mask of all tasks in the system, can cause problems and suboptimal load balance

After rebooting you can check the result with:

top

Tasks: 109 total,   1 running, 108 sleeping,   0 stopped,   0 zombie
%Cpu0  :   0.6/1.3     2[                ]
%Cpu1  :   0.6/3.2     4[                ]
%Cpu2  :   0.0/0.0     0[                ]
%Cpu3  :   0.0/0.0     0[                ]
GiB Mem : 21.3/0.724    [                ]
GiB Swap:  0.0/0.000    [                ]

To retrieve or set a process's CPU affinity you have to use taskset.

If you want MPD assigned to core 3 you have to edit /usr/lib/systemd/system/mpd.service:

[Unit]
Description=Music Player Daemon
After=network.target sound.target

[Service]
ExecStart=/usr/bin/taskset -c 3 /usr/bin/mpd --no-daemon
Restart=always

[Install]
WantedBy=multi-user.target

Reload the daemon:

systemctl daemon-reload

And restart the service:

systemctl restart mpd

Frank

Hi Frank

Thanks for the above nice a easy to follow. I have a few questiona if you don't mind.

First of all, in the first part you isolated cores 2 & 3 but only set mpd to run on core 3. Was that just to show how to isolate more than 1 core?
When I ran through it I isolated core 3 and set mpd to run on core 3 and its working away quite happily.

Does the mpd service also handle the library update? The reason I ask is that when I ran the initial update and played one of the first tracks that it found the audio dropped out every 5-10 seconds while it was running.
After isolating CPU 3 and assigning mpd to it I removed the source and readded it and tested again, this time it played the file fine.

Finally, is the Spotify service heavy enough to warrant assigning it to core 3 as well?

hondagx35

Hi bevlar,

First of all, in the first part you isolated cores 2 & 3 but only set mpd to run on core 3. Was that just to show how to isolate more than 1 core?

Yes, this was only for demonstration.

Does the mpd service also handle the library update?

Yes, library updates are done by mpd.
Dropouts during library updates shouldn't happen.
I think you have a problem with your network connection.
What you can try is to mount your source without "cache=none".

Finally, is the Spotify service heavy enough to warrant assigning it to core 3 as well?

Play with this and report, i have no answer to this.

Frank

JeffD

Will the UI be available on the hdmi connector for the b2? Connect a core to take on this task?

kwcpaul

I have problem using the spotify function and airplay. after I entered my spotify account to the aetting, the spotify session at the library page will not load. Also, i cannot choose airplay when changing engine? Thanks.

ACX

kwcpaul wroteI have problem using the spotify function and airplay. after I entered my spotify account to the aetting, the spotify session at the library page will not load.

Have you double checked the credentials? Currently there's no auth errors management in the UI.

kwcpaul wroteAlso, i cannot choose airplay when changing engine? Thanks.

Switching to Airplay engine is only passive, the system will do it automatically when receiving an incoming stream.

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