Public bug reported:
This occurs on a DELL Inspiron 9400 with Intel SigmaTel Audio STAC92XX.
Since Ubuntu Precise, stereo speakers do not work any more and only the
subwoofer is working. The result is cracky sound (just imagine even a
440 Hz tone played on a subwoofer to get an idea) and no stereo (all
sounds come from the left, as the subwoofer is on the left).
On Ubuntu Maverick, this was the opposite: stereo speakers was working
properly but subwoofer was not working at all. Was not perfect, but
preferable.
On Windows XP, both the stereo speakers and the subwoofer works, so the
sound card must not be broken.
Output of “lspci | grep -i audio”:
> 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition
> Audio Controller (rev 01)
Output of “cat /proc/asound/pcm”:
> 00-00: STAC92xx Analog : STAC92xx Analog : playback 1 : capture 1
> 00-01: STAC92xx Digital : STAC92xx Digital : playback 1
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: precise sigmatel sound stac92xx
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https://bugs.launchpad.net/bugs/1010752
Title:
Sound not working properly on Ubuntu Precise with SigmaTel Audio
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