At Tue, 24 Jun 2008 01:25:11 -0700, stan wrote:
Ashwin.Chandra@corel.com wrote:
Hello,
I am having an issue with my playback application where upon playback start, only the left speaker is outputted. But if I mute and unmute (either through my application or using alsamixer), the sound playback resumes on both left and right speakers. This only happens on a particular system too (out of 5 systems). But I know it is my issue because mplayer or smplayer works fine.
I believe I am setting the correct HW params (ie. 2 channels), etc.
Any ideas?
Thanks!
The ICE1724 driver has exactly this behavior. It is a known bug and has been there for years. You don't say what chip is having the problem, but I would guess that this is it. Most people just program a script to adjust the volume at startup to cure it.
Well, this is likely a different problem. The case of envy24* drivers, the problem is the initialization of the registers via I2C/SPI. But, in the case of HD-audio, this can't be the case.
I fixed a similar case with VIA HD-audio codecs by limiting the supported PCM formats to 16. The 24 bit format was buggy on them. Possibly a similar situation.
Takashi