[alsa-devel] snd_had_intel turning off internal speakers by going to power state D3
jeffrobinssae at gmail.com
Sat Sep 29 21:39:23 CEST 2012
On Mon, Sep 24, 2012 at 12:03 PM, Jeff Robins <jeffrobinssae at gmail.com> wrote:
> On Mon, Sep 24, 2012 at 1:06 AM, Takashi Iwai <tiwai at suse.de> wrote:
>> At Sat, 22 Sep 2012 13:03:37 -0700,
>> Jeff Robins wrote:
>>> I have a Toshiba Satellite C655D with Mageia 2 and I have a problem
>>> where the internal speakers eventually stop producing sound, but the
>>> headphones still work. After doing a bit of research and running
>>> alsa-info (attached) I figured out that one of the parts of the sound
>>> had gone into a D3 power state.
>>> Removing and then reloading the snd_hda_intel module fixed the
>>> problem, but then the sound would turn off again. I was able to find
>>> a post
>>> in alsa-users where someone else came up with a better solution using
>>> hda-verb to reset the power state:
>>> I also found a thread in the gentoo forums where other people are
>>> having the same problem. One of them has kernel 3.5.0:
>>> I'm open to compiling my own alsa and helping out in any way I can.
>>> Please let me know what I can do.
>>> Mageia bug report for completeness:
>> OK, it's getting interesting now.
>> We've got similar reports but so far only on Lenovo laptops with the
>> Conexant codecs. (I'm not quite sure whether all are with CX20585.
>> Might be with other Conexant variants?)
>> I asked Conexant guys to check this issue, and they informed that
>> there is no automatic-go-to-D3 feature in the codec hardware itself.
>> And judging from the hardware state, it looks like the class-D speaker
>> goes down due to the over temperature. So, we concluded that this
>> should be very likely Lenovo-specific things.
>> But now you reported about Toshiba laptop. It brings up again the
>> possibility of the sound driver side... Weird.
>> Can it be a regression since some kernel version? The kernel
>> regression doesn't mean necessarily a sound driver regression but
>> might be a problem in another part like ACPI, too.
> This never happened with Mageia 1 and I don't think it happened
> originally with Mageia 2, but started after updates. I was looking
> into a problem with there being no sound after a hibernation, when my
> wife told me about the current problem.
> I will try to get you the current kernel version of Mageia 1 tonight,
> but it has been a while since I upgraded to 2. I will also play the
> for a long period in Windows to see if I have a problem there, in case
> it is temperature related. We never use Windows, so I don't actually
> know how it acts there.
> Thank you,
I'm having the same problem in Windows, but I know I didn't always
have the problem.
On Aug 5th, 2012* I watched "Risky Business" and the second half of
streaming off of Netflix under Windows without the problem. I
couldn't get 10 minutes
into "Risky Business" today without the sound cutting out. I also had
the problem with
YouTube and listening to a podcast with Foobar2k.
I was running speedfan to look at the temperatures and nothing got
higher than 60 C.
The fan never even cut in and it did come on during the BIOS POST.
Does the Linux driver load any microcode and/or firmware?
*I was in the hospital with my wife while she was being induced and we
were waiting for
her to give birth. She somehow missed every iconic film from the 80's.
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