Optical Audio Out Plays At Wrong Speed..

This may be a duplicate of Bug #172654

Is this symptom still reproducible in 9.04?

Daniel:

Recently I tried my Fiber cable again, and after a bit of messing around I got it working right, but after a bit it stopped working, then started it working again at that same fast speed... Sounds somewhat chipmunkish.

Right now I am using the latest Ubuntu (Intrepid Ibex) with all the latest updates, today.

Anything you need to know from me to help get this fixed?

Also, do you know if I will ever be able to adjust the volume of my output for this cable? I noticed in order to get the sound to work I have to check the checkbox "IEC958" in the "Switches" tab of the Volume Control menu, then I have to put the slider for the "IEC958 Playback AC97-SPSA" in the "Playback" tab of the Volume Control menu to MAX..

Those volume switches must be set for your hardware, yes. For volume control, you may not be able to; I'd need to see your codec dump (use the alsa-info.sh debugging script mentioned at https://wiki.ubuntu.com/DebuggingSoundProblems and paste the generated url here).

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!

Daniel,

Here is a link with the new info that you requested: http://www.alsa-project.org/db/?f=f45fe06caa17b80c9035a724397c027bf79de1c8

This problem is still relevant for me and my system, even with the newest Karmic install.

The only cool part is that the volume now works with optical out. :) Still, the audio seems to be playing faster, like double speed. Almost chipmunk-style.

Could you please try either installing, or unning the latest lucid alpha 3 live CD to test whether this problem still exists in lucid?

Thanks.

@Luke

I will download the lucid alpha 3 live-cd and give it a go in the morning.

Thank you for the reply.

Is there anything you might need from me if the problem still exists?

I can't get Alpha 3 or the Daily build to boot, so it will be a while..

Using the latest daily-build, in live mode, I can finally confirm that this is still a problem on my system. If anyone needs me to do anything, using the latest daily-build, I would be glad to get you the info you'd need.

Is there any fix for this. I see this as well. Ubuntu 10.04.1 i386.

Its because its not synced the frequency between the output and input..

In other words, if you play a 96 kHz audio (or 48 kHz audio) via a 44.1 kHz output, it gets faster "trying to squeeze everything in the 44.1 kHz stream"..

It could be a problem at your digital input (yamaha), but I dont think it is there because they sense what kHz is beeing used and adapts the input accordingly.

The error is somewhere between the kHz of what you are trying to play, what the soundcard is sonfigured to play up sounds at, and at the digital output at the card.

Its a missmatch between the kHz of what is beeing played and the configuration of the mixer.. there lies the problem.

Double rate slots: 10/11
Extended ID : codec=0 rev=0 AMAP LDAC SDAC CDAC DSA=0 SPDIF DRA VRA
Extended status : SPCV LDAC SDAC CDAC SPDIF=10/11 SPDIF VRA

Simple mixer control 'IEC958 Playback AC97-SPSA',0
  Capabilities: volume volume-joined
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 3
  Mono: 3 [100%]

this is not volume control but AC97 SPDIF Slot Assignment

Thank you for reporting this bug to Ubuntu. Ubuntu 8.04 (hardy) reached end-of-life on May 12, 2011.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

Please upgrade to the latest version and re-test.

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]