[Bug 14827] Garbled sound

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Wed Sep 14 15:46:33 UTC 2005


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http://bugzilla.ubuntu.com/show_bug.cgi?id=14827
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------- Additional Comments From crimsun at fungus.sh.nu  2005-09-14 16:46 UTC -------
Please ensure with hdparm that DMA is enabled for your internal DVD-ROM.

The analog input works fine because it does not use digital audio extraction,
and because the sync issues only occur with DAE I'm inclined to look at hdparm
settings first and then whether "plughw:0,0" works better than "default" for the
ALSA virtual device.

Presuming your internal DVD-ROM is /dev/hdc (you'll need to confirm with
/var/log/dmesg output):
$ sudo hdparm -d /dev/hdc

If it's disabled, please enable it using -d1, and test CD Player's and XMMS's
DAE again.

If it's enabled, please change XMMS's ALSA plugin configuration in Preferences.
In the device drop-down menu, please replace "default" by typing "plughw:0,0".
This will temporarily disable dmixed sounds, so please ensure esd is not running
by unchecking System> Preferences> Sound> Enable sound server startup. Then test
XMMS's DAE again.

In both cases, make sure you've checked the multithreaded mode checkbox in
XMMS's ALSA plugin configuration (Advanced settings). For testing, please
UNCHECK the mmap mode checkbox.

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