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no sound from laptop speakers
by Antanas Budriūnas
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Hallo,
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. Any hints are very appreciated Antanas Budriūnas _______________________________________________ Linux-audio-user mailing list Linux-audio-user@... http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user |
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Re: no sound from laptop speakers
by James Cameron
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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. In older sound cards the switching was done using a mechanical switch inside the socket. This tended to be unreliable over time. 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. If so, wait for Ubuntustudio 9.10 or later. -- James Cameron http://quozl.linux.org.au/ _______________________________________________ Linux-audio-user mailing list Linux-audio-user@... http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user |
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Re: no sound from laptop speakers
by Antanas Budriūnas
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James,
thanks for the quick reply. 2009/10/26 James Cameron <quozl@...>: > 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 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@... http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user |
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Re: no sound from laptop speakers
by Antanas Budriūnas
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Good evening!
2009/10/26 Antanas Budriūnas <antanasb@...>: > James, > > thanks for the quick reply. > > 2009/10/26 James Cameron <quozl@...>: >> 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. >> >> Grab a copy of the Ubuntu 9.10 release candidate, boot from CD, and see >> if it is fixed in that. Fresh Karmic Koala started with startup sound from speakers! In general Ubuntu makes striking advance. Antanas Budriūnas _______________________________________________ Linux-audio-user mailing list Linux-audio-user@... http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user |
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Re: no sound from laptop speakers
by James Cameron
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On Mon, Oct 26, 2009 at 08:48:48PM +0200, Antanas Budri?nas wrote:
> 2009/10/26 Antanas Budri?nas <antanasb@...>: > > 2009/10/26 James Cameron <quozl@...>: > >> On Mon, Oct 26, 2009 at 12:16:57PM +0200, Antanas Budri?nas wrote: > >>> There is HP 6735b laptop with integrated audio - > >>> Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) > >>> OS: Ubuntustudio 9.04 > >>> I can hear sound playback through headphones' output but no sound from > >>> built-in speakers (with headphones disconnected). > >>> Win Vista (dual boot) playbacks audio through laptops speaker easely. > >> > >> Grab a copy of the Ubuntu 9.10 release candidate, boot from CD, and see > >> if it is fixed in that. > > Fresh Karmic Koala started with startup sound from speakers! > In general Ubuntu makes striking advance. I think it is mainly because Ubuntu users get involved and report problems. -- James Cameron http://quozl.linux.org.au/ _______________________________________________ Linux-audio-user mailing list Linux-audio-user@... http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user |
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