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synthead

Member

Registered: 2006-05-09

Posts: 1,337

Weird sound issues with ATI IXP SB400 AC'97 sound card

This is on an IBM ThinkPad R51e laptop.  When using VLC, the sound glitches constantly.  It's really hard to explain what it sounds like, and I'm not sure how or if I can record the output without a microphone that I don't have on me.  Here's what hwdetect --show-sound outputs:

SOUND  : pcspkr ac97_bus snd-mixer-oss snd-pcm-oss snd-page-alloc snd-pcm snd-timer snd snd-ac97-codec snd-atiixp-modem snd-atiixp soundcore

Is anyone having this problem?

djszapi

Member

From: Cambridge, United Kingdom

Registered: 2009-06-14

Posts: 1,439

Website

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Is there any relevant in the logs, or if you start it from console ?

---

http://lpapp.blogspot.com

dusan.jaluvka

Member

Registered: 2009-08-04

Posts: 3

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Hi, I have similar problems with my ATI IXP soundcard on ASUS laptop. Have you somehow solved the problem with "looping" and "stucking" sounds?

I'm using latest kernel (2.6.30.4) and ALSa drivers and sometimes everything seems to work fine for a few minutes until it breakes. And unfortunatelly nothing appears in the logs

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Well, I'm not sure what I did, but now it doesn't make any sound at all

Here's some more info ...

alsamixer regignizes it as:

Card: ATI IXP
Chip: Analog Devices AD1981B

[root@radical sound]# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: IXP [ATI IXP], device 0: ATI IXP AC97 [ATI IXP AC97]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Modem [ATI IXP Modem], device 0: ATI IXP MC97 [ATI IXP MC97]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

[root@radical sound]# lsmod | grep snd
snd_seq_dummy           2720  0 
snd_seq_oss            31232  0 
snd_seq_midi_event      7036  1 snd_seq_oss
snd_seq                53808  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device          6792  3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss            40320  0 
snd_mixer_oss          17564  2 snd_pcm_oss
snd_atiixp_modem       12452  1 
snd_atiixp             16456  4 
snd_ac97_codec        106112  2 snd_atiixp_modem,snd_atiixp
ac97_bus                1564  1 snd_ac97_codec
snd_pcm                74464  5 snd_pcm_oss,snd_atiixp_modem,snd_atiixp,snd_ac97_codec
snd_timer              21156  3 snd_seq,snd_pcm
snd                    58820  16 snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_atiixp_modem,snd_atiixp,snd_ac97_codec,snd_pcm,snd_timer
soundcore               6944  2 snd
snd_page_alloc          8900  3 snd_atiixp_modem,snd_atiixp,snd_pcm

Last edited by synthead (2009-10-18 22:57:53)

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

I recorded what the glitchy audio sounds like.  This is XMMS playing an mp3 via ALSA.  VLC crashes and gets stuck in a loop when trying to play anything now, not sure what changed

http://home.comcast.net/~synthead/noise.mp3

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Would a sound like this mean there's an IRQ conflict or something?  I've been working on this issue for days.  This is on my girlfriend's laptop, and she wants to be using linux, so I gotta get this fixed ... heh.

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Whoa, youtube ha no problems with sound at all :S

Last edited by synthead (2009-10-20 20:47:26)

synthead

Member

Registered: 2006-05-09

Posts: 1,337

Re: Weird sound issues with ATI IXP SB400 AC'97 sound card

Is there a way to disable sections of the sound card, like a hardware buffer?