Re: [FFADO-devel] ffado mixer unstable

[Ole B. <ob...@da...>]

On 2010-10-25 21:28, Stefan Richter wrote:
> Ole Bromose wrote:
>> firecontrol does not report any reset. What I saw at several occasions
>> was that the power light on the Pro 26 flashed for a couple of seconds
>> just as when clicking "Identify Device", so I thought it was a reset. In
>> most cases: the monitor output vanishes. and I must power on/off and
>> restart jack/ffado in order to have it back.
> OK.  As far as I understood discussions about the Split_Timeout register of
> the iee1394 core kernel driver (and firewire-core driver), the Pro 26 might
> belong to the class of audio devices whose chipset becomes briefly
> unresponsive during certain asynchronous transactions.  It performs the
> request but sends the response later than the standard value in Split_Timeout
> allows.  However, FFADO has this issue covered as it increases Split_Timeout
> such that it won't miss the somewhat late device response.
>
> Maybe the issue that you are seeing is a different (though much graver)
> symptom of the same inherent hardware weakness.  Or maybe not.
>
> Do you power the Pro 26 via FireWire or via its own PSU?  If the former, try
> the latter (and the other way around if possible).

I'm powering the Pro 26 via its own supply. My laptop has only a 4-wire 
connection, so I cannot power the 26 from the laptop.

Regards
Ole