Digi+ , Rune and USB drive = channel swapping

piknik

Currently having an issue when playing a file (FLAC), the channels will swap several times during a song. Sometimes it's very subtle, while other times it's quite jarring. The issue only occurs when accessing a mounted USB drive source. When accessing a network mounted source, the files play perfectly.

Hardware: RPi3 with Hifiberry Digi+ board. USB powered Toshiba Canvio Connect hard drive and Canakit 5V 2.5A p.s.
Software: beta 4 image (03212016)

This issue has been discussed at the Hifiberry forum
https://support.hifiberry.com/hc/en-us/community/posts/207307985-Raspberry-Pi-3-and-DAC-Pro

and here, but pertaining to the DAC Pro boards, not the Digi+.
#3293

Has RuneAudio been able to duplicate this issue, and if so, is RuneAudio also working with Hifiberry on a fix. It sounds like it's a kernel issue and Hifiberry folks are in touch with the Volumio people, so hopefully parallel efforts are going on here.

Thanks and great product.

hondagx35

Hi piknik,

i made some tests with the latest kernel and it seems to solve the problem.

If you like to try it:

- check if you have enough space on your sd card

df -h

If not (10% or less) first resize your sd card.

- update the kernel and firmware

pacman -Sy --force raspberrypi-firmware-bootloader linux-raspberrypi
sync

- modify config.txt (add "dtparam=audio=on")

......
#dtparam=i2c_arm=on
#dtparam=i2c_vc=on
#dtparam=i2s=on
#dtparam=spi=on
#dtparam=act_led_trigger=mmc
dtparam=audio=on

#dtparam=uart1=off
#dtoverlay=pi3-disable-bt-overlay
.......

- remove some files and reboot

rm /usr/lib/modules-load.d/nfs-utils.conf
rm /etc/modules-load.d/raspberrypi.conf
sync
reboot

- set kernel version (optional)

uname -a

This will give you the actual version. (e.g. Linux runeaudio 4.4.8-2-ARCH #1 SMP Sat Apr 29 20:07:23 MDT 2016 armv7l GNU/Linux)

redis-cli set kernel "Linux runeaudio 4.4.8-2-ARCH"

Frank

piknik

Bingo! That did it.

After doing your suggested changes and listening for a couple of hours, I haven't heard the channel swapping at all...not even once. I am ecstatic. And to top it off, I can use the full capacity of my mSD card now.

Frank, thanks so much for your quick help, very much appreciated.

rastus

So, can these instructions be used with the Raspberry Pi 2B and DAC+, or is this specific to the Raspberry Pi 3 and DIGI+?

hondagx35

Hi,

as both (RP2/RP3) share the same image this should work.

Frank

rastus

hondagx35 > Thank you.

rastus

hondagx35 wrote- modify config.txt (add "dtparam=audio=on")

......
#dtparam=i2c_arm=on
#dtparam=i2c_vc=on
#dtparam=i2s=on
#dtparam=spi=on
#dtparam=act_led_trigger=mmc
dtparam=audio=on

#dtparam=uart1=off
#dtoverlay=pi3-disable-bt-overlay
.......

So I'm using a Raspberry Pi 2B with a PiFi DAC+, do I need to add this line "dtparam=audio=on" to the config.txt? Is it required?

hondagx35

Hi rastus,

do I need to add this line "dtparam=audio=on" to the config.txt? Is it required?

Audio

alsa-utils should supply the needed programs to use onboard sound. Default volume can be adjusted using alsamixer.

A key change with Linux kernel version 4.4.x for ARM related to ALSA and to the needed sound module: in order to use tools such as alsamixer with the current kernel, users must modify /boot/config.txt to contain the following line:

dtparam=audio=on

Frank

rastus

hondagx35 wroteAudio

alsa-utils should supply the needed programs to use onboard sound. Default volume can be adjusted using alsamixer.

A key change with Linux kernel version 4.4.x for ARM related to ALSA and to the needed sound module: in order to use tools such as alsamixer with the current kernel, users must modify /boot/config.txt to contain the following line:

dtparam=audio=on

Good call, I followed your instructions (above) today but did not add this line to the config.txt file: dtparam=audio=on, I then played some music and it played fine, sounded great. Then I logged into the Pi to change alsamixer settings, and it did not work, alsamixer loaded but I couldn't change the settings. I thought, that's strange. So now I know why, I will add that line. Your instructions were very thorough and easy to follow. Now running Linux version 4.4.9-1-ARCH (builduser@leming) (gcc version 5.3.0 (GCC) ) #1 SMP. Thank you berry much brother.

Kindest regards,

rastus

Dohmar

FYI users with certain HATs will need the parameter to read dtoverlay=audio=off

https://discourse.osmc.tv/t/january-update-now-iqaudio-dac-not-working/12675/19

I have a iqaudio_dac (x400) and this update has killed my sound. Im just working through a few things to try and get the DAC detected. So far no luck

Dmesgs gives me

[    5.670597] snd-rpi-iqaudio-dac soc:sound: ASoC: CPU DAI (null) not registered
[    5.670607] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517
[    5.695374] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[    5.696476] snd-rpi-iqaudio-dac soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered
[    5.696494] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517
[    5.701811] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    5.701971] snd-rpi-iqaudio-dac soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered
[    5.701979] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517
[    5.982638] snd-rpi-iqaudio-dac soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered
[    5.982664] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517
[    5.987111] brcmfmac: brcmf_sdio_drivestrengthinit: No SDIO Drive strength init done for chip 43430 rev 1 pmurev 24
[    5.987734] usbcore: registered new interface driver brcmfmac
[    5.987831] snd-rpi-iqaudio-dac soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered
[    5.987841] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517
[    6.578665] bcm2835-rng 3f104000.rng: hwrng registered
[    6.578834] snd-rpi-iqaudio-dac soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered
[    6.578841] snd-rpi-iqaudio-dac soc:sound: snd_soc_register_card() failed: -517

-D

rastus

Well I still can't make changes with alsamixer, even after adding 'dtparam=audio=on'... not important really, so don't care... unless it becomes important, to me.

Dohmar

Has anyone else had issues with getting their dac hats working after this last update?
my pi still won't initialize the hat. broke the moment i upgraded the kernel

-D

jetcode

Dohmar wroteHas anyone else had issues with getting their dac hats working after this last update?
my pi still won't initialize the hat. broke the moment i upgraded the kernel

-D

Yes.
Frank's instructions are spot on.
Make sure to resize your SD Card partition.

Pi3, HifiBerry Dac+

antikvar

Thank you, gentelmens! This real working. Raspberry Pi3 / Audiophonics Es9023 TXCO V3. An hour listening channels have not changed

antikvar

but! right and left channels are reversed. There is a possibility to change them?
(so far just changed the wires, but it is eating me)

rikardo1979

I have same issue. I just realized I have channels swapped.
I have spent few hours last night trying to figure out whats wrong. Whats worst this occurs on other OS. I have tried MoodeAudio, Volumio and is still same
I have RPi2+Audiophonics I-Sabre EC9023 DAC

rikardo1979

I have tried kernel update to latest version Linux runeaudio 4.4.14-2-ARCH but is still same

rikardo1979

OK,
In my case issue resolved. Kind of

It is down to the DAC itself where they messed up when they manufactured PCB
http://forum.audiophonics.fr/viewtopic.php?f=4&t=1648&p=6572#p6572

rastus

rikardo1979 > Ouch, quality control is no good with Audiophonics I-Sabre EC9023 DAC. Thanks for informing us!