[ALSA - driver 0001649]: No surround sound on ICH5 (AC'97 AD1980)

bugtrack
2005-12-14T07:46:23Z

Last Modified: 12-14-2005 08:46 CET
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Summary: No surround sound on ICH5 (AC'97 AD1980)
Description:
I cannot get my AC'97 device (AD1980) to produce any sound other than
stereo output. I have tried various settings on alsamixer and I used
various speaker-test forms to validate settings. When I use:

speaker-test -Dplug:surround40 -c4

then I hear just Front-Left and Front-Right. There is total silence on the
rear channels. I plugged the rear speakers plug into the 2nd sound output
jack.

Some hints would be appreciated. I have been searching around the internet
and have found other issues regarding the AD1980, but not this one. I do
realize it may be my setup that's wrong, but the chance is getting quite
small by now.
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lmike - 12-14-05 07:46
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A bit strange the i/o and memory resources settings in the pci output. Do
you have set PnP OS to 'Yes' in BIOS settings ? If yes, try to set it to
'No'.

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znerd - 12-14-05 08:46
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I'm not sure whether I set or unset 'PNP OS'. I'll have a look at the BIOS
settings when I come home.