[LAU] no sound from laptop speakers

[Antanas Budriūnas]

James,

thanks for the quick reply.

2009/10/26 James Cameron <quozl at us.netrek.org>:
> On Mon, Oct 26, 2009 at 12:16:57PM +0200, Antanas Budri?nas wrote:
>> I have rather strange problem.
>> There is HP 6735b laptop with integrated audio -
>> Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
>> but IMHO sound chip isn't relevant at all.
>> OS: Ubuntustudio 9.04
>> I can hear sound playback through headphones' output but no sound from
>> built-in speakers (with headphones disconnected).
>> Alsamixer shows all playback levels high and unmuted.
>> Win Vista (dual boot) playbacks audio through laptops speaker easely.
>
> Okay, good, that last bit shows there isn't electrical damage.  If there
> was, then the head-phone present (hp) feature may misbehave.  I've had
> experience of that: http://quozl.linux.org.au/2008-12-19-hp-present/
>
> Unlike what you say, I think the sound chip is critical.  The Intel HDA
> is often used with head-phone present feature ... so that when you plug
> in the head-phone the amplifier is cut off.  But that is done by
> software; by the driver.

Understand.

> You either have the wrong driver loaded, or the wrong options for the
> driver, or the driver is faulty.  That the driver in the other operating
> system works is good data.
>
> Grab a copy of the Ubuntu 9.10 release candidate, boot from CD, and see
> if it is fixed in that.

I'm doing exactly this at the moment.

> If so, wait for Ubuntustudio 9.10 or later.

I'll try. Thanks again!


Antanas Budriūnas