[PD] RPI usb soundcards that require mmap_emul

Julian Brooks jbeezez at gmail.com
Fri Oct 11 06:50:10 CEST 2013


I tend to stick with 44.1 so it's good to know 48k could be trouble.

Hmmm, disabling ethernet isn't an option for ssh communication.

Perhaps the 'LEAVE_ME_ALONE' comment could be worth checking out?

Also, what did you roll back to get audio working again?


On 10 October 2013 18:42, Antoine Villeret <antoine.villeret at gmail.com>wrote:

> sorry, I have several cards from ESI and messed them every times !
> I was thinking about UGM96 which works great at 48kHz (btw I didn't try it
> at 96kHz because I have enough troubles and headache with 48k)
>
> But note, that I need to disable the ethernet to get input without
> crackles.
>
> +
> a
>
> --
> do it yourself
> http://antoine.villeret.free.fr
>
>
> 2013/10/10 Julian Brooks <jbeezez at gmail.com>
>
>> Good to know, thanks Antoine.
>>
>> What was it that you rolled back?
>>
>> BTW - can't be the UDJ card as that has no input but I think you have a
>> different ESI card too.
>>
>>
>> On 9 October 2013 21:02, Antoine Villeret <antoine.villeret at gmail.com>wrote:
>>
>>> hi,
>>>
>>> I couldn't try this and I don't know anything about mmap_emul but
>>>  I recently updated a Pi (in the middle september) and got crakle with
>>> an ESI UDJ 6 (2in/2out) which was working great before
>>> then I downgrade to the version of april 26 2013, and it works again
>>>
>>> +
>>> a
>>>
>>> --
>>> do it yourself
>>> http://antoine.villeret.free.fr
>>>
>>>
>>> 2013/10/9 Julian Brooks <jbeezez at gmail.com>
>>>
>>>>  Hi all,
>>>>
>>>> I'm building a fresh rpi image and after installing hexxah's rpi-update
>>>> and running it to update the firmware I got this message (not seen before):
>>>>
>>>> "mmap_emul is set in /etc/asound.conf, disabling it as it is no longer
>>>> necessary
>>>> If you are (for instance) using an external USB soundcard that needs
>>>> mmap_emul,add the string LEAVE_ME_ALONE to your /etc/asound.conf as a
>>>> comment
>>>> If you don't know what an /etc/asound.conf is, don't worry about this
>>>> message"
>>>>
>>>> So I guess my question is:
>>>> How do you know if your usb soundcard requires mmap_emul?
>>>>
>>>> Also a heads up as I know a couple of people mentioned having sound
>>>> problems recently and perhaps this may help.
>>>>
>>>> This is most recent raspbian image btw.
>>>>
>>>> Regards,
>>>>
>>>> Julian
>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>
>
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