Hello all,
I need you to confirm my M-Audio Delta 66 is dying (or not !). I've been
using it for 3 years without problems, as soon as I had the latest BIOS
version of my ABIT KT7A (VIA KT133 chipset) installed. For all these
years, I had no problem running alsa or jack apps. I ordinarily use it
with its sample rate set to 44100 Hz.
But a few days ago, as I was testing the resampling code of a jack app
of mine, I decided to set jack to use 96000 Hz and my Delta began
to be noisy. From that day on, I get those horrible crackling noises,
especially at 44100 or 48000 Hz.
Setting every volume control to 0/Mute with alsamixer doesn't change a
thing, I can still hear the noise through my Omni I/O analog breakout
box. No matter if I actually use the card, like playing a soundfile, or
not, it's noisy.
The only way to get rid of this noise is to set the sampling rate
("Multi Track Internal Clock" in alsamixer) to :
IEC859 Input (I don't have anything connected to my S/PDIF plugs)
64000 Hz
32000 Hz
24000 Hz
22050 Hz
at 96000, 88200, 48000 and 44100 Hz, the noise is here.
The noise begins to be heard at boot time when the kernel activates the
PCI card.
Those tests led my to think that it really is the PCI card that fails,
not the Omni I/O which does not care about the sampling rate (pure
analog), but I may be wrong.
I have examined the card and no capacitor seem damaged, nor is there
any trace of a burned IC or else.
I have tried using a new kernel but it didn't help, the situation is
the same with Debian testing's 2.6.12-1, DeMuDi's 2.6.12-3-multimedia,
or kernel.org's 2.6.15.2 with Ingo Molnar's -rt16 patch.
I use a Debian testing distro, and was using a custom RedHat 7.3 before
that, both with no problem.
This weekend, I installed my card into a friend's PC (running Debian
too) and the same noise was there. It was a Celeron based system
(different CPU and chipset as mine).
Before I sadly conclude that my card is dead, I would like to have your
opinion on this. Maybe some of you know this card enough to point me at
things I should do ? Maybe this is a question for alsa-devel ?
Thanks for reading and thanks for your help.
Have a nice day.
--
David
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems? Stop! Download the new AJAX search engine that makes
searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642
_______________________________________________
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user
