Re: snd_hda_intel shutdown noise

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At Thu, 02 Oct 2008 21:59:59 -0700,
Howard Chu wrote:
> 
> On my HP dv5z whenever shutting down or rebooting there's a loud pop on the 
> speakers just before the screen shuts off. It seems to me that it might be 
> worthwhile to zero the volume or set the mute bit on the output channels just 
> before closing the device. I started looking into this but haven't found the 
> right place to insert the code yet. Anyone else have any ideas? Will this even 
> make a difference?

Not always, and pretty depending on the hardware design.

A simple test is just to mute volumes before shutdown/reboot.  If this
still causes the noise, then it's not about the volume mute switch.


Takashi
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