I have news, and they're good this time. After some juggling and persistance around compiling and patching the snd-usb-usx2y module, I've finally got that dreaded INPUT MONITOR LED come to light and, as Karsten rightly predicted, playback has shown its ugly head on my Tascam US-224. Hip, hip, hurray!
Like a miracle, the MUTE and SELECT LED lights of the mixer strips 1-4 are
lightning up too. Again, Karsten tips are quite cirurgical :)
However, I don't get the SOLO, REC, NULL, nor all other transport LEDs to
lit. But that's yet another step, I think the next.
We're getting near and I'm quite happier now.
Karsten Wiese wrote:
>
> So please try the following patch:
>>>>
> --- alsa-driver/usb/usx2y/usbusx2yaudio.c 30 Mar 2004 08:27:16 -0000 1.9
> +++ alsa-driver/usb/usx2y/usbusx2yaudio.c 2 Apr 2004 11:55:21 -0000
> @@ -1245,7 +1245,7 @@
>
> snd_dma_continuous_data(GFP_KERNEL),
> usX2Y_capt_substream->endpoints *
> 64*1024,
> usX2Y_capt_substream->endpoints *
> 128*1024)) ||
> - (usX2Y(card)->chip.dev->descriptor.idProduct == USB_ID_US428 &&
> + (usX2Y(card)->chip.dev->descriptor.idProduct != USB_ID_US122 &&
> 0 > (err = usX2Y_rate_set(usX2Y_stream, 44100)))) { // Lets us428
> recognize output-volume settings, disturbs us122.
> snd_usX2Y_audio_stream_free(usX2Y_stream);
> return err;
> <<<
>
> if the us428 doesn't get the "usX2Y_rate_set(usX2Y_stream, 44100)" at
> startup, it later behaves ignorant to light & volume setting. like
> us224 behaves now.
>
That was it. Although I only got it working after one last
alsa-driver-1.0.3 rebuild and when set --with-debug=full on ./configure.
Kind of strange. My literal patch applied to stock alsa-driver-1.0.3 is on
attachment. It is just the same of Karsten's supplied above, just for
reference.
> If we get the INPUT MONITOR Led enlightened, the Volume settings should
> also work with respect to direct monitoring at least. US224 Master Fader
> seams to b where US428's Fader5 is. That needs adjustment in
> s428control.
>
> The data sent to set us224 internal mixers is filtered out with
> grep -n "00: 0[0123456789] .. .. .. ..$" USB224_usbsnoop1.log
> it gives i. e.:
> 11721: 00000000: 00 00 25 00 25
> 11732: 00000000: 01 00 25 00 25
> 11743: 00000000: 02 00 25 00 25
> 11754: 00000000: 03 00 25 00 25
> 11831: 00000000: 04 00 42 00 42
>
> look at struct usX2Y_volume and its methods. it should fit the us224.
> But lets get that Leds enlighted first :-)
>
The master fader works, at least while on playback. I don't seem to get
fader strips 1-4 to have any audible effect. But now's too early to judge
my experiments.
Other issues are now just emerging... rest assured ;)
Thanks a lot Karsten, your help and advice is priceless.
CU
--
rncbc aka Rui Nuno Capela
[EMAIL PROTECTED]
alsa-driver-1.0.3p2.patch.gz
Description: GNU Zip compressed data
