I am rebuilding my Mythbox. I had a customer get a new computer, and he gave me his old one. Its a P4 3.0Ghz, 1GB RAM, and a Radeon X700 PCI-E. I've got the NIC running with a kernel rebuild and skge downloaded from Marvell, and got the Radeon working with a deb from somewhere. The only problem I am having is with btaudio. I can see that since 2.6, btaudio has been dropped. It used to work for me in 2.4 (R4 something). I have 3 WinTV cards. I know btaudio works with them, because I had it working before. I've built a btaudio module from a download mentioned on KnoppMyth Wiki. I had to copy over the .ko module instead of the .o though. Anyway, the module loads fine:



I've created a /etc/modutils/btaudio/, and ran update-modules:



I've also disabled the following from loading, as they just do NOT work with old cards (the part about dropping btaudio):

dst
dst_ca
snd_bt87x
dvb_bt8xx

Anyway, all of the dsp and mixer devices show up. However, I can not get any sound out of them. ALSA never sees them as cards. I want to use aplay to test the sound, but since ALSA doesn't recognize them, I guess that won't work. I've tried using XawTV and setting -C to /dev/dsp0 and dsp1. But still no sound. I've been searching Google and these forums for about 6 hours now, but have not had any luck. Has anyone else gotten btaudio to work on the new releases?

Thank you,
Jason Greb

Not sure if this helps, but maybe:



Not sure why I am getting that... how can I tell what is using the device?

I've never used btaudio, but I seem to remember a while back hearing that the name changed.

_________________
Have a question search the forum and have a look at the KnoppMythWiki.

Xsecrets

Nice customer

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HP VL400 (PIII 866), Skystar2 2.6D, PVR350, Nvidia FX5200, 384MB, 200GB, KnoppMyth R5.5

no kidding if that's an old computer I need to start calling mine an antique.

_________________
Have a question search the forum and have a look at the KnoppMythWiki.

Xsecrets

Well, I don't consider it an old computer. Its got a bigger processor that both my computer and my laptop. (2.5 and 2.4 respectively). It's mostly been a PTA though. This is why I don't buy MSI boards. And the fan on the graphics card is dying, And when I put this motherboard into my old case (a converted Gateway desktop which does very well), I had to mod the case a little bit. I had to cut the opening in the back for the motherboard, and unfortuantely, until I can find a power supply with a back of 5" x 3", I am stuck with a 200W, with a hacked on P4 connector, and a motherboard that is supposed to have 24-pin, not 20. But so far, no smoke. I put pictures on my site, if anyone was interested (www.jasongreb.com).

Yay! I have sound. I found out what it was. First off, I took out the last tuner, as I was getting all kinds of kernel messages about it (I think it is a special PCI slot, as it is a different color). Anyway, when I did that and tried to Watch TV, it said the /dev/dsp was in use. Well, no artsd or esd running. So I investigated further. Turns out that /dev/dsp goes to /dev/dsp0. Well, btaudio was taking over dsp0. I had to change my preinstall to snd_pcm_oss, not snd-pcm-oss, and add that module to /etc/modules. After that, I have sound. Now to find out what is wrong with my last tuner.

Hi, thanks jasontech - this thread helped a lot..

I couldn't seem to get snd_bt87x to cooperate so I figured I'd give btaudio a try and it worked fine.

Just in case anyone else finds this helpful, these are the steps I followed:

- Built btaudio as per the Extract and compile instructions at http://knoppmythwiki.org/index.php?page=BTTV+BTAudio. I didn't follow steps 1, 2 and 3 from the wiki though.

- As you stated, make install puts btaudio.o in /lib/modules/2.6.13.2-chw-3/kernel/sound/oss. I rm'd this and copied btaudio.ko into this directory instead, then ran depmod -a. At this point, insmod/modprobe worked, but it didn't assign /dev/dsp*

- I created /etc/modutils/btaudio with the following:



- Ran update-modules

- Commented out bt878, dst, dst_ca and dvb_bt8xx in /etc/modules and added snd_pcm_oss

- Rebooted.. dmesg | grep btaudio gave:



- Ran mythtv-setup and chose /dev/dsp1 (digital). This didn't work, but as suggested at http://www.linuxtv.org/v4lwiki/index.php/Btaudio (i.e. "The analog mode of the btaudio driver should just work on any BT87x card"), I tried /dev/dsp2 (analog). After restarting the myth backend, I had Live TV audio without a patch cable on my WinTV Go Plus!

Anyhow, I hope someone finds all that useful

jrj

FYI, I find the audio directly off the tuner is rather "electronic" and of low quality. Using the tuner's line out is better IMO

-jrj

Does anyone know of a way to fix this electronic sound? or is it a card by card issue?