* Realtek codec eating up battery?
@ 2012-04-15 23:38 Norbert Preining
2012-04-16 8:21 ` Takashi Iwai
0 siblings, 1 reply; 3+ messages in thread
From: Norbert Preining @ 2012-04-15 23:38 UTC (permalink / raw)
To: linux-kernel; +Cc: Takashi Iwai
Dear all,
(please Cc)
running a recent git kernel from today, I see the following in powertop:
1.02 W 100.0% Device Audio codec hwC0D0: Realtek
I am quite sure that was not the case in former times, so I wanted to ask
if you think this is a kernel change or a user space change that is
responsible for that?
AFAIR before I was running on top of git 7c427f45, now
on git 6c23b8e9 and there have been quite some changes regarding realtek
in the meantime:
* tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace).
ALSA: hda/realtek - Add quirk for Mac Pro 5,1 machines
ALSA: hda/realtek - Add a fixup entry for Acer Aspire 8940G
ALSA: hda/realtek - Fix GPIO1 setup for Acer Aspire 4930 & co
ALSA: hda/realtek - Add a few ALC882 model strings back
output of dmesg wrt realtek/hda:
[ 20.952213] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X
[ 21.004975] hda_codec: ALC262: SKU not ready 0x411111f0
[ 21.008167] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10
[ 21.011878] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 21.013351] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
Thanks a lot and all the best
Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
`You know they've reintroduced the death penalty for
insurance company directors?'
No I didn't. For what offence?'
Trillian frowned.
`What do you mean, offence?'
`I see.'
--- Evidence that there will be some justice in the Universe
--- eventually.
--- Douglas Adams, The Hitchhikers Guide to the Galaxy
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Realtek codec eating up battery?
2012-04-15 23:38 Realtek codec eating up battery? Norbert Preining
@ 2012-04-16 8:21 ` Takashi Iwai
2012-04-16 13:30 ` Norbert Preining
0 siblings, 1 reply; 3+ messages in thread
From: Takashi Iwai @ 2012-04-16 8:21 UTC (permalink / raw)
To: Norbert Preining; +Cc: linux-kernel
At Mon, 16 Apr 2012 08:38:13 +0900,
Norbert Preining wrote:
>
> Dear all,
>
> (please Cc)
>
> running a recent git kernel from today, I see the following in powertop:
> 1.02 W 100.0% Device Audio codec hwC0D0: Realtek
>
> I am quite sure that was not the case in former times, so I wanted to ask
> if you think this is a kernel change or a user space change that is
> responsible for that?
There should be no kernel change for such a problem.
Basically the above message means that no power-saving feature is
kicked off.
Check your mixer setup whether you enabled any analog-loopback
controls such as "Mic Playback" or "Line Playback" mutes. If any of
these is turned on, the power-saving is suppressed.
If it still doesn't change the behavior, please give alsa-info.sh
output (run with --no-upload option).
thanks,
Takashi
> AFAIR before I was running on top of git 7c427f45, now
> on git 6c23b8e9 and there have been quite some changes regarding realtek
> in the meantime:
> * tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
> ALSA: hda/realtek - Fix mem leak (and rid us of trailing whitespace).
> ALSA: hda/realtek - Add quirk for Mac Pro 5,1 machines
> ALSA: hda/realtek - Add a fixup entry for Acer Aspire 8940G
> ALSA: hda/realtek - Fix GPIO1 setup for Acer Aspire 4930 & co
> ALSA: hda/realtek - Add a few ALC882 model strings back
>
> output of dmesg wrt realtek/hda:
> [ 20.952213] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X
> [ 21.004975] hda_codec: ALC262: SKU not ready 0x411111f0
> [ 21.008167] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10
> [ 21.011878] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
> [ 21.013351] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
>
>
> Thanks a lot and all the best
>
> Norbert
> ------------------------------------------------------------------------
> Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
> JAIST, Japan TeX Live & Debian Developer
> DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
> ------------------------------------------------------------------------
> `You know they've reintroduced the death penalty for
> insurance company directors?'
> No I didn't. For what offence?'
> Trillian frowned.
> `What do you mean, offence?'
> `I see.'
> --- Evidence that there will be some justice in the Universe
> --- eventually.
> --- Douglas Adams, The Hitchhikers Guide to the Galaxy
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Realtek codec eating up battery?
2012-04-16 8:21 ` Takashi Iwai
@ 2012-04-16 13:30 ` Norbert Preining
0 siblings, 0 replies; 3+ messages in thread
From: Norbert Preining @ 2012-04-16 13:30 UTC (permalink / raw)
To: Takashi Iwai; +Cc: linux-kernel
Hi Iwai-san,
On Mo, 16 Apr 2012, Takashi Iwai wrote:
> There should be no kernel change for such a problem.
Thanks.
> Basically the above message means that no power-saving feature is
> kicked off.
Indeed, I now installed laptop-mode-tools and suddenly the
HDA disappeared from the list of power consumers ..
I don't know *what* has changed in Debian/sid recently that this
not-saving became the default, but it happened, because I regularly
check with powertop and never saw the HDA before.
Anyway, thanks, back to normal.
Best wishes
Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
------------------------------------------------------------------------
You're very sure of your facts, " he said at last, "I
couldn't trust the thinking of a man who takes the Universe
- if there is one - for granted.
--- Douglas Adams, The Hitchhikers Guide to the Galaxy
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-04-16 13:31 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-04-15 23:38 Realtek codec eating up battery? Norbert Preining
2012-04-16 8:21 ` Takashi Iwai
2012-04-16 13:30 ` Norbert Preining
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.