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From: David Henningsson <david.henningsson@canonical.com>
To: "Nikita N." <nikitan@operamail.com>,
	Clemens Ladisch <clemens@ladisch.de>,
	alsa-devel@alsa-project.org, Takashi Iwai <tiwai@suse.de>
Subject: Re: Speaker burnout
Date: Tue, 31 Mar 2015 12:43:25 +0200	[thread overview]
Message-ID: <551A7A4D.203@canonical.com> (raw)
In-Reply-To: <1427796392.581386.247465613.43178C71@webmail.messagingengine.com>



On 2015-03-31 12:06, Nikita N. wrote:
>> If you have any concrete examples (alsa-info please!) of speakers that
>> can be burned out, and you know a maximum speaker volume where this
> As we said, that is not our bug, we are not audio experts, nor any of us
> is interested in audio matters.

Here's my suggestion how to move forward on this:

  1) Gather consensus that limit the maximum volume on internal speakers 
is the right way forward. Takashi, Clemens, anyone against that strategy?

  2) From the person with the hardware, we will need alsa-info ( 
https://wiki.ubuntu.com/Audio/AlsaInfo ), and also the max volume where 
this does not happen. Is -6 dB good enough? -12 dB? I don't know - this 
is something someone with the hardware must tell us, it cannot simply be 
guessed.

  3) I or someone else can write a kernel patch that limits the maximum 
volume of the speakers to the amount deducted from point 2). Considering 
that we're actually dealing with hardware breakage, this should be sent 
to stable as well. Then no userspace application can set the volume 
higher than our limit.

-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic

  reply	other threads:[~2015-03-31 10:43 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-28 14:03 bug Nikita N.
2015-03-30  7:19 ` bug Clemens Ladisch
2015-03-30 10:27   ` bug Nikita N.
2015-03-30 11:13     ` bug Clemens Ladisch
2015-03-30 14:37       ` bug Nikita N.
2015-03-31  7:18         ` bug Eliot Blennerhassett
2015-03-31  8:19           ` bug Nikita N.
2015-03-31  8:38             ` bug Clemens Ladisch
2015-03-31  9:05               ` bug Nikita N.
2015-03-31 12:42                 ` bug Clemens Ladisch
2015-03-31  8:41             ` potential speaker burnout Eliot Blennerhassett
2015-03-31  8:24         ` bug Ricard Wanderlof
2015-03-31  8:56           ` bug Nikita N.
2015-03-31  9:14             ` bug Ricard Wanderlof
2015-03-31 10:26               ` bug Maarten de Boer
2015-03-31 10:49                 ` bug Nikita N.
2015-03-31 11:05                   ` bug Maarten de Boer
2015-03-31 11:44                   ` bug Ricard Wanderlof
2015-03-31  8:54         ` bug Eliot Blennerhassett
2015-03-31  9:34         ` Speaker burnout David Henningsson
2015-03-31 10:06           ` Nikita N.
2015-03-31 10:43             ` David Henningsson [this message]
2015-03-31 10:57               ` Alexander E. Patrakov
2015-03-31 11:23               ` Nikolay Dimitrov
2015-03-31 11:31               ` Ricard Wanderlof
2015-03-31 11:45                 ` David Henningsson
2015-03-31 13:47                   ` Torsten Schenk
2015-03-31 19:14                     ` Nikita N.
2015-04-05 16:36                       ` Takashi Iwai
2015-04-05 16:11               ` Takashi Iwai
2015-04-07  5:30               ` Eliot Blennerhassett
2015-04-07  7:09                 ` David Henningsson
2015-04-07  7:26                   ` Clemens Ladisch
2015-04-07  7:49                     ` Eliot Blennerhassett
2015-04-07 10:55                       ` David Henningsson
2015-04-07 11:29                 ` Ricard Wanderlof

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