Pi3 and DAC+ Pro

[jimmeuh]

Hi All

First I wanna thank you guys for this awesome looking software!

I'm experimenting with my brand new Pi3 and DAC+ Pro board.
Wanting not to pollute the main Pi3 thread to much with this issue a seperated thread, as it seems a DAC+ Pro problem.

Besides the more common wireless problems more people are experiencing i'm also having an audio issue.
The music coming out of the RCA is really disturbed (read : noise). The strange thing is when I'm skip forward in a track, it sometimes gets ok.

I'm using the test image from Frank (thanks!).

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/boot/config.txt :
dtparam=i2c_arm=on
dtparam=i2s=on
dtoverlay=hifiberry-dacplus
dtoverlay=pi3-disable-bt


Based on:
https://support.hifiberry.com/hc/en-us/community/posts/207234405-RPi3-and-DAC-Pro-Linux-not-working-Working-on-a-fix-
http://www.runeaudio.com/forum/hifiberry-dac-pro-t2954-10.html

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# uname -a
Linux runeaudio 4.1.18-v7+ #846 SMP Thu Feb 25 14:22:53 GMT 2016 armv7l GNU/Linux


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# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 8/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0


After this I was able to choose the "HifiBerry Dac+ I2c" option in the MPD settings in the UI.
I've added the disable bluetooth option to try and prevent the noise, but that didn't help.

Any ideas?

Greatly appreciated

(If I can help debug the wifi issue, let me know what I can test - it appeared after I enabled the DAC settings in my setup)

[hondagx35]

Hi

dtparam=i2c_arm=on
dtparam=i2s=on

No need for this settings.

As i do not own a DAC + pro i can not help at the moment, sorry.

Frank

[jimmeuh]

No problem Frank.

I'll try to delete those settings (I think i've tried already though)
Keep u posted If I find a solution.

[jimmeuh]

On the Hifiberry forum, they seem to have found a solution:

https://support.hifiberry.com/hc/en-us/community/posts/207256895-Fix-for-DAC-Pro-on-RPi3-disable-bluetooth

Is it possible to test it on my Runeaudio setup?

[hondagx35]

Hi,

see also here.

Is it possible to test it on my Runeaudio setup?

Yes, you have to add this:

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dtoverlay=pi3-disable-bt

to your /boot/config.txt

Frank

[jimmeuh]

Hi Frank

Yes I know I've tried to disable the BT.
But they seem to have a updated kernel now, with a fix for the issue.
See the github links in the post:

https://github.com/raspberrypi/linux/pull/1340
https://github.com/raspberrypi/linux/issues/1321

[ingohz]

You may try

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

This updates to the latest kernel/firmware, but could result in other problems.

[jimmeuh]

I've removed those first:

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dtparam=i2c_arm=on
dtparam=i2s=on

reboot -> no difference

I've tried the update

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

reboot ->..... yeah! it works

Thanks for the great support!

[jimmeuh]

Been playing some with the software which now works great!

Next issue to tackle.. the wifi issue.

I can setup a wifi connection fine. The PI3 is available afterwards through the wifi connection. No problems at all...
Until I reboot the PI. The wireless interface won't respond anymore. I need to delete the wireless profile, add it again, and then works fine again.

I've tried the fix for the power issue from Frank:

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cd /srv/http
git stash
git pull

But no difference.

A problem with the combination of the DAC?

Looking in the debug log:

Network interfaces:

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3: wlan0:  mtu 1500 qdisc fq_codel state DORMANT group default qlen 1000
    link/ether b8:27:eb:4d:d9:f8 brd ff:ff:ff:ff:ff:ff

Dmesg:

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[    7.393567] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[    7.393580] brcmfmac: brcmf_add_if: ignore IF event
[    7.397469] brcmfmac: power management disabled

Thanks again...

[hondagx35]

Hi jimmeuh,

i have the same error message, but my wifi works.
I did a web search for this error, but couldn't find a solution / fix.

The build in wifi isn't great at all.
Please try to move your Pi, maybe the signal strength is not good enough.

Frank