[PD] Raspberry Pi Behringer UCA222 boot problems

John Canning johnnyboy7777 at hotmail.co.uk
Sat Jul 27 20:22:29 CEST 2013


Hi Martin,

I thought about this but since the Pi boots with the soundcard plugged in
at USB 2 speed I reckon that this is not the issue. That said, I am using
an iPhone charger that only outputs 1 amp. I will try it with another one
as soon as I can but that won't be for a few days at least. I'll keep you
informed.

John


On Sat, Jul 27, 2013 at 3:36 PM, Martin Peach <martin.peach at sympatico.ca>wrote:

> Maybe your power supply can't handle the load? 2 Amps regulated 5V is
> good, 1 Amp might not do it.
>
> Martin
>
>
> On 2013-07-27 05:51, John Canning wrote:
>
>> Hi Dan,
>>
>> I have done some more hunting around and on the Pd FrontPage site it
>> says that my Behringer soundcard has been proven to work with the
>> Raspberry Pi with reduced USB speed and I have found some posts that say
>> they have it running in full duplex. What I get is something like this
>> when I have the sound card plugged in on boot
>>
>> [    2.469784] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
>> [    2.571518] usb 1-1.3: New USB device found, idVendor=05e3,
>> idProduct=0608
>> [    2.571545] usb 1-1.3: New USB device strings: Mfr=0, Product=1,
>> SerialNumber=0
>> [    2.571562] usb 1-1.3: Product: USB2.0 Hub
>> [    2.573135] hub 1-1.3:1.0: USB hub found
>> [    2.573640] hub 1-1.3:1.0: 4 ports detected
>> [    2.849881] usb 1-1.3.4: new full-speed USB device number 5 using
>> dwc_otg
>> [    2.953034] usb 1-1.3.4: New USB device found, idVendor=08bb,
>> idProduct=2704
>> [    2.953064] usb 1-1.3.4: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=0
>> [    2.953081] usb 1-1.3.4: Product: USB Audio DAC
>> [    2.953096] usb 1-1.3.4: Manufacturer: Burr-Brown from TI
>> [    2.958781] input: Burr-Brown from TI               USB Audio DAC
>>  as /devices/platform/bcm2708_usb/**usb1/1-1/1-1.3/1-1.3.4/1-1.3.**
>> 4:1.2/input/input0
>> [    2.960263] hid-generic 0003:08BB:2704.0001: input,hidraw0: USB HID
>> v1.00 Device [Burr-Brown from TI               USB Audio DAC   ] on
>> usb-bcm2708_usb-1.3.4/input2
>>
>>   and it just hangs there. This is with nothing else plugged in to the
>> PI. Without the lowered USB speed I get so many dropouts that it is
>> completely unusable. I'm sorry to keep harping on about the same thing
>> but as with all of these things you find a little nugget that gives you
>> hope (and another and another). The videos that I have seen like this
>>
>> http://hackaday.com/2013/01/**28/raspberry-pi-becomes-a-**
>> guitar-effects-processor/<http://hackaday.com/2013/01/28/raspberry-pi-becomes-a-guitar-effects-processor/>
>>
>> are pretty much what I'm looking for. Imperceptible/minimal dropouts and
>> decent FX. Can you or anyone tell me why I can't even boot the Pi with
>> the (previously community tested) soundcard plugged in running at USB 1
>> speed? Or why if I plug it in after booting I crash the Pi?
>>
>> This post
>>
>> http://lists.puredata.info/**pipermail/pd-list/2013-01/**100560.html<http://lists.puredata.info/pipermail/pd-list/2013-01/100560.html>
>>
>> and others in the same thread are what started me on this mission so if
>> any of the contributors to it could tell me how they have got this up
>> and running I would eternally grateful
>>
>> Thanks again,
>> John
>>
>>
>> On Sat, Jul 27, 2013 at 12:26 AM, Dan Wilcox <danomatika at gmail.com
>> <mailto:danomatika at gmail.com>> wrote:
>>
>>     For what it's worth, I tried force ing USB 1.1 mode on the pi with
>>     my UA-25 and that resulted in a hard lock as well. Disappointing at
>>     this point since I've worked with audio on slower embedded machines
>>     before ...
>>
>>     On Jul 26, 2013, at 7:19 PM, John Canning
>>     <johnnyboy7777 at hotmail.co.uk <mailto:johnnyboy7777 at hotmail.**co.uk<johnnyboy7777 at hotmail.co.uk>
>> >>
>>     wrote:
>>
>>      Thanks for getting back to me Dan
>>>
>>>
>>>     On Fri, Jul 26, 2013 at 11:50 PM, Dan Wilcox <danomatika at gmail.com
>>>     <mailto:danomatika at gmail.com>> wrote:
>>>
>>>         Actually I miss-typed. The issue is with "Isochronous" usb
>>>         mode:
>>>         http://www.raspberrypi.org/**phpBB3/viewtopic.php?f=28&t=**29226<http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=29226>Looks
>>>         like things should be better for USB 2 audio devices, but
>>>         still issues with USB 1.1 devices (aka mine :P):
>>>
>>>          While Isoc has improved for pretty much everyone using USB2.0
>>>>         devices (USB1.1 will still suffer from lost packets due to
>>>>         split transaction breakage noted elsewhere) I'm still annoyed
>>>>         at my webcams "kinda working" - I get 1-2 seconds of
>>>>         uninterrupted video and then a half-garbled frame.
>>>>
>>>
>>>
>>>         On Jul 26, 2013, at 6:35 PM, Dan Wilcox <danomatika at gmail.com
>>>         <mailto:danomatika at gmail.com>> wrote:
>>>
>>>          Sure, but that's only for certain types of USB devices. Some
>>>>         are working and others aren't. More "professional" sound
>>>>         cards require lower-latency/burst mode over USB which the PI
>>>>         firmware currently doesn't allow and/or doesn't set the
>>>>         correct priority for. The issue AFAICT is that essentially
>>>>         the usb host is software defined on the SOC and they haven't
>>>>         optimized it for usb audio, or something like that.
>>>>
>>>>         For instance, I can get stereo out in Pd working fine with my
>>>>         Edirol UA-25 . If I enable an audio input, I get instant
>>>>         dropouts. Yeah, I guess it "works", but not well enough for me.
>>>>
>>>>         On Jul 26, 2013, at 6:27 PM, John Canning
>>>>         <johnnyboy7777 at hotmail.co.uk
>>>>         <mailto:johnnyboy7777 at hotmail.**co.uk<johnnyboy7777 at hotmail.co.uk>>>
>>>> wrote:
>>>>
>>>>          Hi Dan,
>>>>>
>>>>>         Thanks for getting back to me. I'm still very new to the Pi
>>>>>         but have found this post that seems to say that it can work.
>>>>>         I'm confused. What do you reckon?
>>>>>
>>>>>
>>>>>         On Fri, Jul 26, 2013 at 11:02 PM, Dan Wilcox
>>>>>         <danomatika at gmail.com <mailto:danomatika at gmail.com>> wrote:
>>>>>
>>>>>             Simply put, the RPI firmware does not work with USB
>>>>>             audio correctly yet. See this thread:
>>>>>             http://lists.puredata.info/**pipermail/pd-list/2013-07/**
>>>>> 103261.html<http://lists.puredata.info/pipermail/pd-list/2013-07/103261.html>
>>>>>
>>>>>             I keep looking for fixes, but the way USB is handled,
>>>>>             the only way for it to work without dropouts is to have
>>>>>             *nothing* else plugged into the usb bus and ethernet
>>>>>             disabled ... sucks.
>>>>>
>>>>>             On Jul 26, 2013, at 5:41 PM, pd-list-request at iem.at
>>>>>             <mailto:pd-list-request at iem.at**> wrote:
>>>>>
>>>>>              *From:*John Canning <johnnyboy7777 at hotmail.co.uk
>>>>>>             <mailto:johnnyboy7777 at hotmail.**co.uk<johnnyboy7777 at hotmail.co.uk>
>>>>>> >>
>>>>>>             *Subject:**[PD] Raspberry Pi Behringer UCA222 boot
>>>>>>             problems*
>>>>>>             *Date:*July 26, 2013 5:40:49 PM EDT
>>>>>>             *To:*Pure Data <pd-list at iem.at <mailto:pd-list at iem.at>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>             Hi Folks,
>>>>>>
>>>>>>             I have been trying for quite a while to get my
>>>>>>             Raspberry Pi to work in full duplex with Pd. I have
>>>>>>             installed the OS on the PdPi site and updated it. I am
>>>>>>             using a Behringer UCA222 for audio. When I change the
>>>>>>             USB speed down to 1 (dwc_otg.speed=1) in
>>>>>>             /boot/cmdline.txt my Pi won't boot with the soundcard
>>>>>>             plugged in. If I unplug the soundcard the Pi will boot
>>>>>>             but as soon as I plug it in the Pi crashes. Has anyone
>>>>>>             got any suggestions about why this is happening?
>>>>>>
>>>>>>             Thanks,
>>>>>>             John
>>>>>>
>>>>>
>>>>>             --------
>>>>>             Dan Wilcox
>>>>>             @danomatika
>>>>>             danomatika.com <http://danomatika.com/>
>>>>>             robotcowboy.com <http://robotcowboy.com/>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>         --------
>>>>         Dan Wilcox
>>>>         @danomatika
>>>>         danomatika.com <http://danomatika.com/>
>>>>         robotcowboy.com <http://robotcowboy.com/>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>         --------
>>>         Dan Wilcox
>>>         @danomatika
>>>         danomatika.com <http://danomatika.com/>
>>>         robotcowboy.com <http://robotcowboy.com/>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>     --------
>>     Dan Wilcox
>>     @danomatika
>>     danomatika.com <http://danomatika.com>
>>     robotcowboy.com <http://robotcowboy.com>
>>
>>
>>
>>
>>
>>
>>
>>
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>
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