[PD] The dwc_otg.speed=1 issues on RPI with keyboards

[Alexandre Torres Porres via Pd-list]

oh, sorry, I didnt see this... yep, it crackles a lot for my taste


2014-06-28 16:41 GMT-03:00 Ivica Bukvic <ico at vt.edu>:

> Boot rpi without the fix, connect the soundcard, and test its audio
> output. If it crackles, or simply doesn't work, then you know it doesn't
> work without the fix. For good measure you can also try input (e.g. use
> pd's audio tester patch).
>
> Regarding alternative soundcards, you can also try
> http://www.newegg.com/Product/Product.aspx?Item=N82E16812186035 (approx.
> $8.50, tiny form factor). We got these for both rpi orchestra and a 50 rpi
> installation and it works perfect.
>
> HTH
> On Jun 28, 2014 3:30 PM, "Alexandre Torres Porres via Pd-list" <
> pd-list at mail.iem.at> wrote:
>
>> I need an audio in and I got an imic griffin, it says on pd page i need
>> to make this adjustment, how do I know if I don't really need to do it
>> anymore? Anyway, if raspbian has changed, maybe we should update the pd
>> page about it
>>
>> I dont mind getting a bluetooth keyboard if I have to, I just wonder if
>> any should work fine or if there are some issues.
>>
>> thanks
>> cheers
>>
>>
>> 2014-06-28 13:21 GMT-03:00 Simon Wise via Pd-list <pd-list at lists.iem.at>:
>>
>>> On 29/06/14 01:03, Ivica Bukvic via Pd-list wrote:
>>>
>>>> I unfortunately don't have the SD card with the said version of raspbian
>>>> handy but FWIW I do recall not having to adjust boot parameters in the
>>>> most
>>>> recent install and had no problems connecting wired keyboard, mouse,
>>>> and a
>>>> monitor without pi crashing.
>>>>
>>>
>>>
>>>  *From:* Pd-list [mailto:pd-list-bounces at mail.iem.at] *On Behalf Of
>>>>>>>> *Alexandre
>>>>>>>> Torres Porres via Pd-list
>>>>>>>> *Sent:* Friday, June 27, 2014 8:28 PM
>>>>>>>> *To:* pd-lista puredata
>>>>>>>> *Subject:* [PD] The dwc_otg.speed=1 issues on RPI with keyboards
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Hi there, so, about setting the USB to 1.1 speed in RPI with
>>>>>>>> "dwc_otg.speed=1".
>>>>>>>> I've only seen a mention about it conflicting with USB and wireless
>>>>>>>> keyboards on the Pd page (meaning it works only with bluetooth
>>>>>>>> ones), so I
>>>>>>>> come here to ask you people a few questions...
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> I wonder if this could be worked around in future versions of the
>>>>>>>> raspbian operating system, seems to be some sort of a bug, right?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On that note, hasn't it been already fixed by any chance? Or has
>>>>>>>> anyone
>>>>>>>> found a USB or wireless keyboard that eventually works?
>>>>>>>>
>>>>>>>
>>> Many sound cards do not require the "dwc_otg.speed=1" setting, get one
>>> of those. The RPi USB is really quite awful, and many sound cards do things
>>> it cannot cope with, but the simple ones are mostly fine. I believe it has
>>> been improved over time, so a recent raspbian would be sensible. I've used
>>> wireless keyboards or wifi with usb audio on a few occasions, but usually
>>> try to make all communications via ethernet and custom interfaces via the
>>> local GPIOs.
>>>
>>> this audio chip has worked well, sounds clean and is cheap ...
>>>
>>> http://www.ebay.com/itm/5V-USB-Powered-PCM2704-MINI-USB-
>>> Sound-Card-DAC-decoder-board-for-PC-Computer-/171295902514?
>>> pt=LH_DefaultDomain_0&hash=item27e2080b32
>>>
>>> or
>>>
>>> http://www.ebay.com/itm/PCM2704-USB-DAC-to-S-PDIF-
>>> Sound-Card-Decoder-Board-3-5mm-Analog-Output-F-PC-/171295895054?pt=LH_
>>> DefaultDomain_0&hash=item27e207ee0e&_sid=2048038
>>>
>>>
>>>  Does it work with any bluetooth keyboard/mouse? I really don't like
>>>>>>>> those tiny mini small ones, do any of you suggest a nice bigger
>>>>>>>> one? It
>>>>>>>> could be a compact one...
>>>>>>>>
>>>>>>>
>>> Some Bluetooth keyboards do a very annoying 'sleep' to save battery ..
>>> but then they don't send the first couple of keystrokes when you start
>>> typing again, meaning you need to hit shift before starting typing to wake
>>> it up. Useless when trying to use it for cues etc. No idea how common this
>>> design is, but I wasted some cash (much more than the audio card!) on mine.
>>>
>>> Simon
>>>
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>>
>>
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