For all the people that are still affected by this bug about 100% usage
of audio codecs, I filed a new bug at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1213719
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Please reopen this bug. The original reported stated that this problem
is fixed on his computer, but the problem persists on many other models.
Problems have been reported with up-to-date 3.8 kernel on 13.04
installations.
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Gioele Barabucci, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
Gioele Barabucci, if you have a bug in Ubuntu, the Ubuntu Kernel team, Ubuntu
Bug Control team, and Ubuntu Bug Squad would like you to please file a new
report by executing the following in a terminal while booted into a Ubuntu
repository kernel (not a mainline one) via:
ubuntu-bug linux
For
Laurynas Biveinis, this bug report is being closed due to your last
comment
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/comments/32
regarding this being fixed with an update. For future reference you can
manage the status of your own bugs by clicking on the current status in
the
Confirmed on Lenovo x121e.
Powertop reports 100% usage of Audio codec hwC0D0: Conexant (pulseaudio
)
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https://bugs.launchpad.net/bugs/877560
Title:
Audio codec draining power when
confirmed on my HP 2730P
found this issue from PowerTOP 2.3
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Title:
Audio codec draining power when not in use
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Another me too:
$ sudo powertop
Summary: 461.2 wakeups/second, 57.9 GPU ops/seconds, 0.0 VFS ops/sec and 10.0%
CPU use
Usage Events/sCategory Description
36.3 ms/s 242.7Process/usr/lib/firefox/firefox
100.0%
I am experiencing this bug on Ubuntu 13.04 with kernel 3.8.0-22-generic.
PowerTOP shows Audio codec hwC0D1: Conexant consumes 100% in power
consumption summery.
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Is fixed for me in 3.7-rc8. Thanks Tomas for the hint.
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Title:
Audio codec draining power when not in use
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After installing the 3.7-rc5 kernel, the excessive power
consumption/heating problem went away here.
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Title:
Audio codec draining power when not
I've reported this issue up on alsa-devel. Here's the relevant thread:
http://article.gmane.org/gmane.linux.alsa.devel/102984
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Title:
Audio
I'm having the same issue but with Debian's kernel linux-
image-3.2.0-4-amd64.
None of the tips provided here worked for me except the one by dfsmith:
https://bugs.launchpad.net/ubuntu/+source/powertop/+bug/536631/comments/13
This seems to be an ALSA problem to me. Do the ALSA people and Intel
Here is a status of this problem on my laptop with the latest quantal
updates. I have attached powertop's HTML output. What I find confusing
is that audio devices are listed both at 100% and 0% usage in the same
powertop run:
100.0% PCI Device: Intel Corporation 82801I (ICH9 Family) HD Audio
** Description changed:
+ in 12.04 no draining power when not in use, but also shoes 100% usege.
+ in 12.10 this is bug works, also as down (but usage ~4W always)
+ (This problem is not ubuntu, but the kernel in general. I learned forums and
there is this problem a lot of people (including
Lauris Smilga's solution doesn't help me. I'm still seeing the audio
codec usage, at 2W
Thinkpad T420
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Title:
Audio codec draining power when
Hm the workaround seems to work after I put the computer to sleep and
reactivated it.
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Title:
Audio codec draining power when not in use
To
The workaround from Lauris Smilga works for me (Samsung Series 7 Chronos
700Z3A-S02DE). However I dont find it appreaciate to log-out and log
back in to get this fixed. powertop estimates 1.14W usage.
uname -a
Linux ck 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64
x86_64
I am in the same boat as Lauris and Smilga,
running 12.04 amd64 on a thinkpad X200, setting the options suggested
have given me huge(1.5hrs) battery increases and reduced overall heat.
But I am at a loss on how to make perminant.
attempted setting in modprobe.d, rc.local, and sysfs.conf to no
The workaround provided by Lauris Smilga works for me too.
My X220 reports battery life increase from 3 hours to 5.30.
How can we set those options permanently?
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Hi can those bugs be merged with ?
https://bugs.launchpad.net/ubuntu/+source/powertop/+bug/536631
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Title:
Audio
This bug is still present in precise. However, the following workaround works
for me:
* log in
* echo 1 | sudo tee /sys/module/snd_hda_intel/parameters/power_save
* echo Y | sudo tee /sys/module/snd_hda_intel/parameters/power_save_controller
* pkill pulseaudio
* log out log in again (so
I have just upgraded from Maverick to Natty to Oneiric, since Maverick just
lost security support. My fan is running at high speed blowing hot air. I have
now removed my battery from my laptop and I'm strictly running on AC power.
Powertop shows:
Summary: 355,9 wakeups/second, 0,0 GPU
Today after just a few minutes uptime and only using Unity and terminal I get:
ayers@schiefer:~$ uptime
07:03:34 up 18 min, 2 users, load average: 0.01, 0.09, 0.20
ayers@schiefer:~$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:+75.0°C
k10temp-pci-00c3
Adapter: PCI
I rebooted and before loging in (i.e. only the greeter was running) I
switched to the console and only monitored the system for a bit with
sesnors and top... and 8 minutes later:
07:18:55 up 8 min, 1 user, load average: 0.01, 0.34, 0.28
acpitz-virtual-0
Adapter: Virtual device
temp1:
I'm also having this Issue with the last nightly of precise pangolin.
Usage Events/sCategory Description
100.0% Device Audio codec hwC0D1: Conexant
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So the basic issues here are that we need to get accurate and consistent
power measurements that we know are reliable. I suggest running
powerstat from my PPA: https://launchpad.net/~colin-
king/+archive/powermanagement
* Make sure the machine is not running any unnecessary power sucking
I think it might be that powertop is on crack here. I see that at the
top of powertop's overview all the time (with only a few terminals
open), but on powertop-1 it never shows up. Here's a snapshot of both,
taken at the same time (on precise):
powertop:
Usage Events/s Category
It's been a while since I reported this, now this machine has received
kernel/BIOS/RAM/rest of ubuntu package upgrades, and I cannot reproduce
the apparent audio codec power hog with powertop. OTOH, now it's fixated
on unused ethernet card, reporting that it is taking 15-16W. Of course
all
powertop 1.97 reporting 4.17 watts and 100% usage on codec hwc0d0, on a
thinkpad t410, running ubuntu oneiric. Powertop 1.13 doesn't seem to
see it (though there's a large category for 'rescheduling wakeups', not
sure if htat's related)
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Powertop reporting 5.47 watts (!) at 100% on Thinkpad T60. Running
Xubuntu with kernel 3.0.0-12-generic
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Title:
Audio codec draining power when
Sorry that was incorrect. Unable to delete comment.
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Title:
Audio codec draining power when not in use
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I have installed a custom kernel for an unrelated issue and applied all
the released package updates and the powertop report has changed.
The kernel is from bug 844957 :
http://people.canonical.com/~ogasawara/lp844957/
Now the powertop reports 0 mW for the sound codec, and the overall
battery
I have to take back my last comment. After the reboots to the official
kernel and back I still get 100% and 1W reports. Must be something
then.
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Title:
Audio codec draining power when not in use
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Title:
Audio codec draining power when not in use
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Powertop output. For some reason it show 1W for the codecs, while GUI
shows 1.67W consistently.
** Attachment added: Powertop output
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/+attachment/2557735/+files/powertop.html
** Tags added: apport-collected
** Description changed:
Would it be possible for you to test the latest upstream kernel? It
will allow additional upstream developers to examine the issue. Refer to
https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the release
candidate kernel versus the daily build. Once you've tested the
upstream kernel,
Powertop report with the RC kernel
** Attachment added: powertop-3.1.0-0301rc10-generic-1.4W.html
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/+attachment/2558093/+files/powertop-3.1.0-0301rc10-generic-1.4W.html
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Powertop report with the daily kernel
** Attachment added: powertop-3.1.0-999-generic-1.75W.html
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/+attachment/2558094/+files/powertop-3.1.0-999-generic-1.75W.html
** Tags removed: needs-upstream-testing
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I have done the following:
1) Removed the proprietary nvidia drivers
2) Installed RC and daily kernels from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.1-rc10-oneiric/ and
http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/
3) For each of these ran powertop on idle system. The
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