On Saturday 19 July 2003 9:34, Frank Murphy wrote: > > > Others seeing this? Any ideas where this problem might lie? Because it > > > happens in two audio apps, I imagine it's a lower-level problem. Anyone > > > seeing the same thing with ALSA? > > > > Is this one of the round clamshell-style iBooks? I don't think I was > > able to discern from the DACA mixer-control code I used as a reference > > how to do it, so I just never took separate channels into account for > > the DACA mixer-control code when I wrote that stuff. (Frankly, I was so > > happy to have mixer control at the time, balance control didn't really > > cross my mind.) I'm guessing no one's played with it since then. > > Yeah, it's one of the grey-and-white 1 1/2 generation iBooks. Most of the > hardware is the same, just a slightly faster processor and bigger HD. > > So I started messing around to get ALSA on this box. Took a while, and the > sound was not very good (pops and things). However, I installed alsaplayer, > and when using it with oss, the balance controls work properly. It seems > that both aumix and xmms have the same bug. But the device works like it > should.
Some new info here, for anyone interested. Seems that this balance problem *is* a problem with the hardware mixer driver. Both xmms and aumix show the problem because they open /dev/mixer directly. alsaplayer does not, so must be doing its balance adjustment in software, and so doesn't see the problem. I suspect that this doesn't matter because ALSA is the audio driver for the 2.6 kernel, though the balance for ALSA on PPC doesn't seem perfect either. Anyway, FYI. Frank
