[linux-audio-user] Re: Stuttering via HDSP, Cardbus, Multiface?
derek at x-i.net
Fri Mar 26 16:44:01 EST 2004
Tim Blechmann wrote:
> ricoh ??? (derek / gentoo)
CardBus bridge: Ricoh Co Ltd RL5c476 II (rev a8)
> - derek: what problems exactly did you have? i'm not exactly sure, if
> your problem was similar to the one, ico, timothy and myself are
> experiencing ...
I ran the spectrum of problems, but them main issue was that the card
would not make sound. Sometimes the card was not recognized, sometimes
the card was recognized, but the firmware would not load. Other times,
card was recognized, firmware was loaded, but I would get awful sound
out of it like the problems you, Timothy and Ico report. But that was
the last step along the way, and I could attribute it to bad IRQ
assignment from ACPI, if I remember correct. But that only happened
after a significant amount of "voodoo" with the recognition and the
firmware with Planet-CCRMA.
By "voodoo", I mean things like this: there were times, espc with Red
Hat, where it seemed to work only after power cycling both the laptop
and the multiface, but that was not a real solution. Changing distros
was the final voodoo, but it seemed to do the trick. You can search the
archives of Planet-CCRMA list for "derek+HDSP" for all the gorey details
of my saga there, as I kept them very up to date on my woes.
> - ene, o2micro and ricoh are cardbus bridges, rme doesn't suggest for
> using with an hdsp ... but they haven't had any complains about ti's
> cardbus bridges...
TCI 1420 and 1440 are listed as problem cards by RME. TCI 1225 shows up
ok, though, so I imagine a 1250 is probably cool too. I maintain to this
day it is something between the cardbus controllers, their
kernel-drivers or modules, or the configurations thereof which creates
this mess. I don't think the ALSA-dev folks have much power to correct
this problem, although I would bet that their understanding of the
upstream problems might be more educated than ours. My guess, along with
Ico, is that kernel-dev folks might be the best resource, if you can
document the issue well enough. Which is hard when you aren't sure
excatly where it lies.
derek holzer ::: http://www.umatic.nl
---Oblique Strategy # 196:
"What else is this like?"
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