Pi3 Bridge high res playback issue

IanAusten · February 8, 2017, 7:49pm

I have just installed a Pi3 bridge into my system connected via USB to a Naim DAC-V1.

Everything plays fine from Tidal and standard 16bit files but when I try playing 24bit files I get an almighty hissy racket I have checked the display on the DAC which confirms that the file is 24 bit / 192 kHz and the buffer is showing constantly full so I think I can rule out network speed issues.

When I change the settings for the DAC to 16 bit it plays back normally. Any ideas?

Many thanks

Ian

@support info
Core PC i5 8GB RAM SSD disk Win10 Roon 1.3 build 196
Bridge Raspberry Pi 3B Roon Bridge 1.0 build 62
DAC Naim DAC-V1 (latest firmware) connected via USB

IanAusten · February 8, 2017, 8:16pm

Here is a picture of the DAC display

The Pi build is DietPi (Jessie)

eric · February 8, 2017, 11:52pm

Hi @IanAusten ---- Thank you for the report and my apologies for the troubles here. May I kindly ask you for the following:

Can you please post some screenshots of the audio setting your are using for this end point (Pi3 - > USB - > Naim DAC) in Roon.
In your troubleshooting have you tried connecting the DAC directly to your core machine yet? If so did the device exhibit the same behavior upon playback?

-Eric

IanAusten · February 9, 2017, 12:37am

Thanks for the reply Eric - screenshot as requested:

I have tried connecting directly to the Roon Core PC - works with no problems.

Ian

eric · February 10, 2017, 3:42pm

Hi @IanAusten ----- Thank you for the follow up and taking the time to answer my questions for me. Both are appreciated!

Can you verify if you were to stream 24/192 to Pi3 + NAIM DAC-V1 end point via a different media player or software, say for example something like iTunes. Does the content playback correctly?

-Eric

IanAusten · February 10, 2017, 3:58pm

Hi @Eric

I wouldn’t know how to stream to the Pi3 using a different media player - maybe you can instruct me?

I can confirm that the Naim works fine connected to the core directly via USB at 24/192.

Ian

Pat · February 10, 2017, 6:58pm

Hi Eric, do you use a manageable switch between your Roon server and your RPI3 Roon Bridge ?
If it is the case, you may have to consider the following: Roon 1.2 plays DSD 128, Roon 1.3 version 196 doesn't [Solved, managed switch flow control]
Pat

IanAusten · February 13, 2017, 8:02pm

Unmanaged switching throughout.

eric · February 13, 2017, 9:41pm

Hi @IanAusten ----- Thank you for the follow up! Can you please describe your network configuration / topology as well as providing insight into any networking hardware you may be implementing in your setup. I want to get an idea of how your devices are communicating and what tools are being used to make those connections possible.

Furthermore, have you done any testing yet with the Pi3 removed from the communication chain but still using the DAC as a network based end point?

-Eric

IanAusten · February 13, 2017, 10:58pm

Hi @Eric. The (Windows10) Roon Core PC is plugged into CAT 5e 1000Mbps Ethernet via my router.

I have tried connecting my Chord Mojo to the Pi3 and that performs fine which now points to some issue that the Naim DAC-V1 is having with the Pi3.

Ian

IanAusten · February 15, 2017, 12:28pm

Sorry for the tag in advance @Dan_Knight - would you have any suggestions on what I could try next? The USB gubbins in the Naim DAC are Audiophilleo if that helps…

Ian

Dan_Knight · February 15, 2017, 5:50pm

Hi,

Yep, no worries.

First thing is to ensure the firmware on the USB DAC is upto date:
DAC-V1 Firmware Update Version 1.16 - English

Lets also check the USB logs for any clues. Play a 24bit file and replicate the broken audio. Once done, please paste results (or take a picture) of the following command:

dmesg | grep usb

IanAusten · February 15, 2017, 6:24pm

Hi Dan

Thanks for your help. I can confirm that firmware is the latest version on the DAC 1.16

Here are the USB logs as requested:

root@DietPi:~# dmesg | grep usb
[ 0.090597] usbcore: registered new interface driver usbfs
[ 0.090660] usbcore: registered new interface driver hub
[ 0.090736] usbcore: registered new device driver usb
[ 1.047449] usbcore: registered new interface driver smsc95xx
[ 1.474398] dwc_otg 3f980000.usb: DWC OTG Controller
[ 1.475775] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[ 1.477188] dwc_otg 3f980000.usb: irq 62, io mem 0x00000000
[ 1.481382] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.482761] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.484148] usb usb1: Product: DWC OTG Controller
[ 1.485514] usb usb1: Manufacturer: Linux 4.4.30-sc1+ dwc_otg_hcd
[ 1.486914] usb usb1: SerialNumber: 3f980000.usb
[ 1.491895] usbcore: registered new interface driver usb-storage
[ 1.510583] usbcore: registered new interface driver usbhid
[ 1.511987] usbhid: USB HID core driver
[ 1.853965] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 2.032169] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
[ 2.033750] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.317963] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 2.406211] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 2.409553] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.451914] smsc95xx 1-1.1:1.0 eth0: register ‘smsc95xx’ at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:5a:03:2f
[ 2.528097] usb 1-1.5: new high-speed USB device number 4 using dwc_otg
[ 2.620853] usb 1-1.5: New USB device found, idVendor=279a, idProduct=0001
[ 2.622744] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.624530] usb 1-1.5: Product: Naim DAC-V1. Audiophilleo.com
[ 2.626244] usb 1-1.5: Manufacturer: Naim Audiophilleo
[ 2.627864] usb 1-1.5: SerialNumber: 00000
[ 2.633495] input: Naim Audiophilleo Naim DAC-V1. Audiophilleo.com as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.5/1-1.5:1.0/0003:279A:0001.0001/input/input0
[ 2.688505] hid-generic 0003:279A:0001.0001: input,hidraw0: USB HID v1.11 Keyboard [Naim Audiophilleo Naim DAC-V1. Audiophilleo.com] on usb-3f980000.usb-1.5/input0
[ 3.340934] usb 1-1.5: 2:1: cannot get freq at ep 0x5
[ 3.478253] usb 1-1.5: 2:2: cannot get freq at ep 0x5
[ 3.615012] usb 1-1.5: 2:3: cannot get freq at ep 0x5
[ 3.752034] usb 1-1.5: 2:4: cannot get freq at ep 0x5
[ 3.889000] usb 1-1.5: 2:5: cannot get freq at ep 0x5
[ 4.024957] usb 1-1.5: 2:6: cannot get freq at ep 0x5
[ 4.161963] usb 1-1.5: 2:7: cannot get freq at ep 0x5
[ 4.298003] usb 1-1.5: 2:8: cannot get freq at ep 0x5
[ 4.435006] usb 1-1.5: 2:9: cannot get freq at ep 0x5
[ 4.571020] usb 1-1.5: 2:10: cannot get freq at ep 0x5
[ 4.707028] usb 1-1.5: 2:11: cannot get freq at ep 0x5
[ 4.844075] usb 1-1.5: 2:12: cannot get freq at ep 0x5
[ 4.981074] usb 1-1.5: 2:13: cannot get freq at ep 0x5
[ 5.117087] usb 1-1.5: 2:14: cannot get freq at ep 0x5
[ 5.254121] usb 1-1.5: 2:15: cannot get freq at ep 0x5
[ 5.390152] usb 1-1.5: 2:16: cannot get freq at ep 0x5
[ 5.392124] usbcore: registered new interface driver snd-usb-audio
[ 542.065127] usb 1-1.5: 2:6: cannot get freq at ep 0x5
[ 542.068879] usb 1-1.5: 2:6: cannot get freq at ep 0x5
[ 695.897209] usb 1-1.5: 2:6: cannot get freq at ep 0x5
[ 695.900696] usb 1-1.5: 2:6: cannot get freq at ep 0x5
root@DietPi:~#

Dan_Knight · February 15, 2017, 6:33pm

Thanks.

Yep defiantly something going wrong there.

Are you using a USB HUB on the RPi? If so try connecting the USB DAC directly to the RPi.

Failing that, if the USB DAC is already connected directly to the RPi, can you try another USB socket on the RPi?

Also, which PSU are you running on the RPi? (eg: Official 5v 2.5A)

IanAusten · February 15, 2017, 6:36pm

No hub and have already tried different ports. Using standard supplied Pi PSU 2.5A

Dan_Knight · February 16, 2017, 6:55pm

Ok, strange. Whats the firmware on your USB DAC? All upto date?

IanAusten · February 16, 2017, 7:22pm

Dan_Knight · February 17, 2017, 11:45am

Hi Ian,

Just to make sure, on PC, was this test with 24 bit output?

Lets try installing the latest official RPi kernel (this is to exclude the DietPi kernel from the issue):

apt-get install rpi-update
SKIP_BACKUP=1 rpi-update
reboot

Let us know if problems persist with 24bit and broken output.

Also:
Do you have any other SBC’s (eg: Odroid C2) available to test the USB DAC with 24bit? It would be interesting to see if we get similar results, from other boards with your USB DAC.

IanAusten · February 17, 2017, 6:35pm

I’m afraid that didn’t fix it either. Unfortunately I don’t have any other boxes to test either

Ian

Dan_Knight · February 18, 2017, 1:59pm

Hi Ian,

Sorry to hear that, was hoping it would be something we could resolve for you.

It appears, either the DAC is incompatible with the current RPi Kernel, or, a possible issue on your DAC.
Unfortunately, the only way to exclude a hardware failure would be to test the DAC on another SBC (eg: Odroid C2 / Sparky).

Interesting, Naim do not support Linux:
http://www.netserverapps.com/naimaudio/users/main.php?id=10247&category_id=33

Another user with this DAC, reports increasing the buffer size resolved the clicks and pop:

github.com/jjalling/squeezelite

Naim DAC-V1 ISSUE

opened 04:03PM - 21 Dec 15 UTC

GoogleCodeExporter

Priority-Medium Type-Defect auto-migrated

``` What steps will reproduce the problem? 1. attach USB DAC Naim DAC-V1 (Audiop…hilleo) 2. with smsc95xx.turbo_mode=n in config.txt 3. I get bad noise or have to force to resample to 48k, than OK What is the expected output? With 44K1 file Output devices: null - Discard all samples (playback) or generate zero samples (capture) sysdefault:CARD=Audiophilleocom - Naim DAC-V1. Audiophilleo.com, USB Audio - Default Audio Device front:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - Front speakers surround40:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - 4.0 Surround output to Front and Rear speakers surround41:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - IEC958 (S/PDIF) Digital Audio Output sysdefault:CARD=ALSA - bcm2835 ALSA, bcm2835 ALSA - Default Audio Device What do you see instead? sysdefault:CARD=Audiophilleocom - Naim DAC-V1. Audiophilleo.com, USB Audio - Default Audio Device => 48K Sound OK but not the right sample rate front:CARD=Audiophilleocom,DEV=0 - Naim DAC-V1. Audiophilleo.com, USB Audio - Front speakers => 44k1 BUT BAD SOUND What version of the product are you using? On what operating system? LINUX (Raspbian and TinyCore) Please provide any additional information below. ``` Original issue reported on code.google.com by `jean.beauve@gmail.com` on 7 Jul 2014 at 3:14

It may be worth trying a higher buffer size in Roon.