Re: ALSA: Conexant CX20585 (thinkpad t510) speaker powersaveregression
From: Kevin Fenzi
Date: Wed Jan 09 2013 - 19:07:31 EST
On Tue, 08 Jan 2013 16:26:38 +0100
Takashi Iwai <tiwai@xxxxxxx> wrote:
> It's a known problem that some people have already reported, but
> currently no clue who actually turns down the pin to D3.
> Conexant guys wrote me that the codec doesn't do it by itself, and the
> driver neither, AFAIK. A possible answer is the firmware / BIOS, but
> who knows.
Thanks for the answer! :)
> In anyway, could you try to trace the hd-audio events and see whether
> the power down is *not* issued by the driver when you see this state?
> See Documentation/sound/alsa/HD-Audio.txt, the section "Tracepoints"
> for a brief instruction.
I can give it a try...
kevin
Attachment:
signature.asc
Description: PGP signature