I have been following this mailing list for a while, and I've seen quite a few problems with the i8x0 chipset (ac97) but I have not seen any solutions (besides a few angry people switching to OSS, e.g. http://www.linuxquestions.org/questions/archive/1/2002/03/1/10289). Let me explain whats been going on. I have an Intel (i8x0) chip and what happens is half the time I get chipmunk sound (a low sample rate is being pushed through a high one, or something like that) and the other half I get really low pitch, slow sound (the opposite) I'm trying to get MythTV to work, and the strange part is MythTV works fine, all the time, no problems whatsoever with sound. It has the right pitch and no problems. This is for the live-tv section and the recorded-programs section. However, MythMusic (a music database application) responds in the same fashion as I am about to describe mpg123 However, when I first boot my computer, mpg123 (output rate at 44100) and artsd (kde's sound server, which is set to use Threaded OSS) sounds really high pitched and chipmunk like. If I force mpg123 to use a higher sample rate than 44100, (mpg123 -r 48000) it doesn't sound as chipmunk-y, but it still sounds too high pitched and fast. If I wait for MythTV to start recording something (It records sound using line in on /dev/dsp), trying mpg123 again creates the result of very low pitched sound. If I force mpg123 to use a sample rate of 32000 instead of 44100, then the music sounds normal. Any ideas of what is going on? I guess I'm a little new to all this sound stuff, so if I failed to include something, I would be happy to add. Thanks.
I'm using the latest debian source package of Alsa 1.0.2c-3 and Debian's precompiled kernel 2.6.3-1-686. I've noticed you usually request this, so cat /proc/asound/card0/codec97#0/ac97#0-0* produces: 0-0/0: Analog Devices AD1885 Capabilities : -headphone out- DAC resolution : 16-bit ADC resolution : 16-bit 3D enhancement : Analog Devices Phat Stereo Current setup Mic gain : +20dB [+20dB] POP path : pre 3D Sim. stereo : off 3D enhancement : on Loudness : off Mono output : MIX Mic select : Mic1 ADC/DAC loopback : off Extended ID : codec=0 rev=0 DSA=0 VRA Extended status : VRA PCM front DAC : 18903Hz PCM ADC : 27434Hz AD18XX configuration Unchained : 0x1000,0x0000,0x0000 Chained : 0x0000,0x0000,0x0000 0:00 = 0410 0:02 = 0606 0:04 = 0606 0:06 = 0003 0:08 = 0000 0:0a = 001e 0:0c = 001f 0:0e = 0040 0:10 = 8303 0:12 = 0303 0:14 = 0303 0:16 = 1f1f 0:18 = 0707 0:1a = 0000 0:1c = 0d0d 0:1e = 0000 0:20 = 2000 0:22 = 000d 0:24 = 0000 0:26 = 800f 0:28 = 0001 0:2a = 0001 0:2c = 49d7 0:2e = 0000 0:30 = 0000 0:32 = 6b2a 0:34 = 0000 0:36 = 0000 0:38 = 0000 0:3a = 0000 0:3c = 0000 0:3e = 0000 0:40 = 0000 0:42 = 0000 0:44 = 0000 0:46 = 0000 0:48 = 0000 0:4a = 0000 0:4c = 0000 0:4e = 0000 0:50 = 0000 0:52 = 0000 0:54 = 0000 0:56 = 0000 0:58 = 0000 0:5a = 0000 0:5c = 0000 0:5e = 0000 0:60 = 0000 0:62 = 0000 0:64 = 0000 0:66 = 0000 0:68 = 0000 0:6a = 0000 0:6c = 0000 0:6e = 0000 0:70 = 2000 0:72 = 0300 0:74 = 1000 0:76 = d800 0:78 = 6b2a 0:7a = 49d7 0:7c = 4144 0:7e = 5360 just in case, lsmod gives: Module Size Used by i810_audio 33844 0 ac97_codec 19084 1 i810_audio snd_pcm_oss 54500 0 snd_mixer_oss 20064 2 snd_pcm_oss radeon 120684 0 md5 3872 1 ipv6 255264 8 snd_bt87x 13380 0 snd_intel8x0 34376 2 snd_ac97_codec 63492 1 snd_intel8x0 snd_pcm 101316 3 snd_pcm_oss,snd_bt87x,snd_intel8x0 snd_timer 25956 1 snd_pcm gameport 4704 1 snd_intel8x0 snd_page_alloc 12228 3 snd_bt87x,snd_intel8x0,snd_pcm snd_mpu401_uart 7840 1 snd_intel8x0 snd_rawmidi 24928 1 snd_mpu401_uart snd_seq_device 8072 1 snd_rawmidi snd 55428 13 snd_pcm_oss,snd_mixer_oss,snd_bt87x,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device smbfs 68376 3 mousedev 10004 1 psmouse 19976 0 tuner 18124 0 tvaudio 22348 0 bttv 151084 0 video_buf 21380 1 bttv i2c_algo_bit 9800 1 bttv v4l2_common 6144 1 bttv btcx_risc 4808 1 bttv i2c_core 23396 4 tuner,tvaudio,bttv,i2c_algo_bit videodev 9952 1 bttv soundcore 10208 4 i810_audio,snd,bttv 3c59x 37960 0 af_packet 22216 0 rtc 12696 0 ext3 121064 2 jbd 62072 1 ext3 mbcache 9220 1 ext3 sd_mod 16736 0 ata_piix 8036 0 libata 40928 1 ata_piix,[permanent] scsi_mod 118136 2 sd_mod,libata ide_disk 18560 3 ide_detect 1088 0 piix 12768 1 ide_core 157644 3 ide_disk,ide_detect,piix unix 28368 351 font 8320 0 cfbcopyarea 3968 0 cfbimgblt 3168 0 cfbfillrect 3904 0 If you need anything else please let me know. Again, thanks for any help you can offer. -JT ===== >From the desk of JT Olds http://jtolds.xnet5.com/ God bless you! __________________________________ Do you Yahoo!? Yahoo! Search - Find what you�re looking for faster http://search.yahoo.com ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
