[LAU] usb or firewire (when having a ricoh chipset)

Lorenzo Sutton lsutton at libero.it
Fri Oct 29 07:22:46 UTC 2010

Jeremy Jongepier wrote:
> On 10/28/2010 03:43 PM, Lorenzo Sutton wrote:
>> Jeremy Jongepier wrote:
>>> On 10/28/2010 03:21 PM, Lorenzo Sutton wrote:
>>>> Hi,
>>>> Hope this helps...
>>>> rosea.grammostola wrote:
>>>>> Hi,
>>>>> Having a ricoh firewire chipset here on a thinkpad t61. Not the best
>>>>> one afaik.. Should I go for a usb (edirol for example) or firewire
>>>>> interface?
>>>> I had an JMicron (?) chipset on the on-board firewire plug on my laptop
>>>> which was also on the same IRQ as basically everything (ethernet,
>>>> graphics card, 2 usb ports etc.) I found no way to even get it to work
>>>> with the 2nd hand FA 101 I bought.
>>> Hello Lorenzo,
>>> I've got a notebook with a JMicron FireWire controller too that shares
>>> its IRQ with about 4 or 5 other devices. My FireWire card works just
>>> fine with that controller.
>> Interesting... what sound card is it? What apps are you using it with?
> Focusrite Saffire Pro 10. With all kinds of apps, multitrackers,
> softsynths, sequencers.
>>>> I then got a (cheap) firewire expresscard. The good thing was that the
>>>> express card slot has its own IRQ. The bad thing was that I discovered
>>>> the chipset was VIA (they don't tell on the packings) which seems to be
>>>> one of the worst around for audio and which would give me a "zombified"
>>>> sound card after a few minutes even with rt kernel and all the possible
>>>> tweaks explained in all the possible linux firewire/pro-audio tutorials
>>>> on the net.
>>> VIA should work, Focusrite even recommends using certain VIA chipsets.
>> True... I've read (and heard) different opinions about it.
>>>> Finally I got a firewire expresscard with Texas Instruments chipset
>>>> (again it took quite some research because it's not well advised on the
>>>> specs and in the stores), here in italy it's branded Digitus (but
>>>> careful because they also have a model with the VIA chipset). It now
>>>> seems to work well. No zombies... A few xruns though (but this was
>>>> playing heavy with Pd).
>>>> So it looks like the chipset is important... I have seen various
>>>> recommended firewire cards (and thus chipsets) on the sound card
>>>> manufacturers' pages so I think this is not a linux-related issue.
>>> Chipset is important, but a properly configured system is even more
>>> important imho.
>> Well that's what I though/hoped.. but the fact that with same system
>> configuration and different chipsets one gets different results must
>> mean something I guess.
> It means that that specific same configuration doesn't work with all
> chipsets. Every system needs to be set up differently.
Ok so what is your suggestion to try and improve the situation? It would 
be helpful to have some details.

> Best,
> Jeremy
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