Sound sizzle with Nvidia MCP67 on jaunty

Bug #365754 reported by Aurélien Hennel on 2009-04-23
6
Affects Status Importance Assigned to Milestone
Ubuntu
Undecided
Unassigned

Bug Description

First thing to know is that i just made a new install of jaunty (final release) and not a simple upgrade from hardy.

Under Hardy, my sound worked well. I used the same parameters in jaunty, but the sound still sizzles (don't know if the translation is good). System sound are played, but it's crackled. I didn't play mp3 for now, but i guess the results will be the same. I tried different parameters, and still having problem.

the card is known as "nVidia Corporation MCP67 High Definition Audio (rev a1)" under lspci.

Also tried to do an alsa-utils reset (not working, "no valid card number"), the method with module assistant (neither) and finally installed linux-backports-module, but still nothing

Thanks for spending time in reading/solving.

raducu (radu-bulboaca) wrote :

I have the same issue on this audio chipset. Currently running a fully updated Jaunty (fresh install).

$ lspci -v
00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
        Subsystem: Acer Incorporated [ALI] Device 0126
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
        Memory at d0880000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [44] Power Management version 2
        Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0 Enable-
        Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

$ cat /proc/asound/cards
 0 [NVidia ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xd0880000 irq 21

also attached is the 'ubuntu-bug -p alsa-base' report

I solved it few days after reporting, sorry for not sharing the solutions (found browsing ubuntu's forum) :

"- One more update: at some point it seemed that the sound was distorting again. In fact, the problem is that I was using too high volume levels. Checking this forum post and this guide, I've managed to get a configuration that seems to work fine. Use alsamixer to set the PCM level to below 50, and use only the Master channel to control the volume. Save your settings so that they keep the same after boot by running

$ sudo alsactl store 0"

Hope this help.
----------------------------------
> Date: Fri, 18 Sep 2009 10:13:13 +0000
> From: <email address hidden>
> To: <email address hidden>
> Subject: [Bug 365754] Re: Sound sizzle with Nvidia MCP67 on jaunty
>
> I have the same issue on this audio chipset. Currently running a fully
> updated Jaunty (fresh install).
>
> $ lspci -v
> 00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)
> Subsystem: Acer Incorporated [ALI] Device 0126
> Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
> Memory at d0880000 (32-bit, non-prefetchable) [size=16K]
> Capabilities: [44] Power Management version 2
> Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0 Enable-
> Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
> Kernel driver in use: HDA Intel
> Kernel modules: snd-hda-intel
>
> $ cat /proc/asound/cards
> 0 [NVidia ]: HDA-Intel - HDA NVidia
> HDA NVidia at 0xd0880000 irq 21
>
> also attached is the 'ubuntu-bug -p alsa-base' report
>
> ** Attachment added: "'ubuntu-bug -p alsa-base' output"
> http://launchpadlibrarian.net/32009741/sound.log
>
> --
> Sound sizzle with Nvidia MCP67 on jaunty
> https://bugs.launchpad.net/bugs/365754
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in Ubuntu: New
>
> Bug description:
> First thing to know is that i just made a new install of jaunty (final release) and not a simple upgrade from hardy.
>
> Under Hardy, my sound worked well. I used the same parameters in jaunty, but the sound still sizzles (don't know if the translation is good). System sound are played, but it's crackled. I didn't play mp3 for now, but i guess the results will be the same. I tried different parameters, and still having problem.
>
> the card is known as "nVidia Corporation MCP67 High Definition Audio (rev a1)" under lspci.
>
> Also tried to do an alsa-utils reset (not working, "no valid card number"), the method with module assistant (neither) and finally installed linux-backports-module, but still nothing
>
> Thanks for spending time in reading/solving.

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Monkey (monkey-libre) wrote :

Please reopen it if you still have this bug, 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!

tags: added: jaunty
Changed in ubuntu:
status: New → Invalid
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