PowerTOP: audio device active 100% of the time, how to file bug?

Alexander van Loon a.vanloon at alexandervanloon.nl
Tue Mar 2 22:20:05 GMT 2010

Thank you for your reply, I added the necessary information to the bug
report today.

Sorry for assigning it to the ubuntu-audio team, I had no idea it
wouldn’t be appreciated. Filing the bug against phonon was my first
guess too because that would be KDE-specific, but the bug triagers for
Phonon don’t seem to be active because no one responded for weeks.

You quote Mackenzie in your e-mail, but I haven’t seen the reply of that
person on the mailing list here? And how would I investigate which
applications are polling the device via alsa-lib?

On ma, 2010-03-01 at 10:08 -0500, Daniel Chen wrote:
> On Mon, Mar 1, 2010 at 9:49 AM, Mackenzie Morgan <macoafi at gmail.com> wrote:
> > interesting bug you might want to take a look at...
> > different levels of device activity in ubuntu v. kubuntu?
> This symptom certainly isn't specific to any hardware and must be
> caused by the specific applications that are polling the device via
> alsa-lib.
> > ---------- Forwarded message ----------
> > From: Alexander van Loon <a.vanloon at alexandervanloon.nl>
> > To: kubuntu-devel at lists.ubuntu.com
> > Date: Mon, 01 Mar 2010 14:05:51 +0100
> > Subject: PowerTOP: audio device active 100% of the time, how to file bug?
> > Please see this – https://bugs.launchpad.net/ubuntu/+bug/521424 – bug
> > report. To make a long story short: PowerTOP notices that one or two
> > audio devices are active 100% of the time, thus causing unnecessary
> > power consumption. However, this only occurred on Kubuntu 9.10, Ubuntu
> > 9.10 wasn’t affected and had a significantly lower power consumption.
> > The problem is still present on Kubuntu Lucid, both with the standard
> > kernel and the 2.6.33 kernel. This was all tested with fresh
> > installations.
> >
> > As you can read in my bug report, I spent quite some time researching
> > this and figuring out what was going on, but I still wasn’t sure for
> > which package I should file a bug report, and to whom it should be
> > assigned, exactly because only Kubuntu seems to be affected. The bug
> > report is a few weeks old now, without any response.
> Please do not assign bugs to the ubuntu-audio team unless we
> specifically request it. It's rather rude, and the torrential bugs
> mean that your report is likely to slip through the cracks.
> I've changed the affected source package to phonon -- yes, likely
> incorrect -- in the hopes that someone more familiar with Kubuntu's
> configuration can take a look.
> > My question is, can anyone tell me to which person(s) I should bring
> > this bug to attention, and what information I should provide in my bug
> > report to help getting it fixed?
> apport-collect -p alsa-base 521424
> is a starting point, but I want to reiterate that this symptom isn't
> an audio stack issue.
> -Dan

More information about the kubuntu-devel mailing list