Mixer name : 'C-Media Electronics CMI9761A+' **** List of PLAYBACK Hardware Devices ****Ĭard 0: SI7012, device 0: Intel ICH
ProcVersionSign ature: Ubuntu 2.6.32- 33.70-generic 2.6.32.41+drm33.18ĪlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. net/ubuntu/ +source/ linux/+ bug/351042 - There might be some additional information, I have accidentially left out in this report. I had reported this problem earlier against Ubuntu 8.10 in https:/ /bugs.launchpad. Using the driver supplied by ASRock fixes the problem on Windows XP. Using the generic driver for SIS 7012 on Windows XP available from shows the same problem in Windows XP. * Lowering volume on the PCM channel to the minimum (which works) results in crackling noise.ĭetected codec differs from displayed codec in C-Media control panel in Windows XP and labeling on the codec chip on the mainboard (both say CMI9739A) Obviously only the lowest setting should set the PCM volume to 0. After the workaround the first 10% (guessed) of the volume control in the upper right corner keeps the PCM channel volume at the minimum, so there is no sound. This causes the issues described in - The suggested workaround mitigates the problem after adding both lines (load-module module-udev-detect ignore_dB=1 and load-module module-alsa-sink control=PCM) but does not fix it completely. * Master volume control or muting has no (audible) effect. There are two (probably related) sound problems running Ubuntu 10.04.2 on my ASRock K7S41GX:
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