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1

Wednesday, November 30th 2005, 6:26pm

Microphone not working !

Am running fedora core 4 on my AMD64 machine. I use KDE for my desktop. I recently bought a microphone with headset and am having problems to get it to work.

I cannot record using KRec.

I have read discussions on many forums and tried different stuff and nothing is working.

I have changed settings in Kmix, alsamixer . changed /etc/asound.conf to :

pcm.asymed {
type asym
playback.pcm "dmix"
capture.pcm "dsnoop"
}
pcm.!default {
type plug
slave.pcm "asymed"
}
pcm.!dmix {
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave {
pcm "hw:0,0"
period_time 0
period_size 128
buffer_size 2048
format S16_LE
rate 48000
}
}
pcm.!dsnoop {
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave {
pcm "hw:0,0"
period_time 0
period_size 128
buffer_size 2048
format S16_LE
rate 48000
}
}

nothing is working. what should I do to get the microphone working ? I am testing microphone using KRec. is there another tool to test the microphone ?

settings :
1) /sbin/lsmod | grep snd
snd_intel8x0 39393 0
snd_ac97_codec 114053 1 snd_intel8x0
snd_ac97_bus 3393 1 snd_ac97_codec
snd_seq_dummy 4805 0
snd_seq_oss 39077 0
snd_seq_midi_event 9537 1 snd_seq_oss
snd_seq 65049 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 11345 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss 60785 0
snd_mixer_oss 20161 1 snd_pcm_oss
snd_pcm 107081 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 29513 2 snd_seq,snd_pcm
snd 70049 9 snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 12257 1 snd
snd_page_alloc 13137 2 snd_intel8x0,snd_pcm


2) ls -l /dev/dsp
crw-rw-rw- 1 arnott root 14, 3 Nov 11 23:36 /dev/dsp

3) ps aux | grep artsd
arnott 28465 1.1 5.8 148928 29744 ? S 12:03 0:14 artsd -F 10 -S 4096 -d -s 1 -m artsmessage -c drkonqi -l 3 -f

Thanks.
arnott

2

Thursday, December 15th 2005, 10:38am

RE: Microphone not working !

If your Intel 8x0 chipset is anything like mine it has more than one microphone input. Check the switches section of the mixer - you should be able to select which microphone input to use here...

Also make sure that the Mic Boost (+20dB) is on (unless you know for a fact that you don't need it)

Also Make sure that the Mic Channel in the Input Section of KMix is selected and not muted and say about 75% of the way from the top. It also wouldn't hurt if the capture slider was selected and also about 75%

If that doesn't solve your problem - I would suggest maybe it has to do with your kernel version and updating both this and your Alsa packages may help

3

Thursday, December 15th 2005, 3:26pm

hi kayosiii
thanks for ur response. I played with all the settings, and then I plugged the microphone to the microphone port at the back of the computer and everything started working fine. I don't understand why it was not working when it was connected to the port at the front of the computer(hp a530n).

cheers

4

Thursday, December 15th 2005, 8:28pm

ok look in the switches section of KMix. There should be an option Called "Mic Select" (with the kmix I am using it is the second drop-down menu on the right hand side).

Mic1 will be the back socket
Mic2 will be the front socket

(well thats how it works on my box anyways)...