Janina Sajka wrote : > Something about amixer's control of the HDSP Multiface has changed. And, > I can't seem to hack how to fix things. Please help! > > I used to use the simple bash script (as published in Linux Journal) > > #!/bin/bash > for i in $(seq 1 18);do > amixer cset name=Chn,index=$i 32768 > done > > to set all the channels to unity, but this script no longer works. I > get: > > amixer: Control default cinfo error: No such file or directory > > Meanwhile, my hdsp is definitely clipping and I can't quite tell where > to tweak it. > > alsamixer is also no longer available, gives an error: > > No mixer elems found > > This is with Fedora 3, so alsa 1.0.6 and the alsa-firmware tools > (hdsploader, hdspconfig, hdspmixer). > > PS: hdspmixer is not accessible to me because I need an eyes-free > interface. > > I suppose knowing where/how to tweak the hdspmixer default presets might > do it?? > > Thanks for any help. > Janina Hi Janina, You have to use the 'Mixer' ctl with amixer (numid=5). It takes three parameters: source, destination, and gain source: 0-25 -> the physical inputs (on the multiface only 0-17) 26-51 -> the playbacks (software output) (only 26-43 on the mf) destination: 0-25 -> physical outputs (mf: 0-17) 26-27 -> line out (phone) gain: 0-65536 -> 0 is minus infinity, 32768 is 0 dB, 65535 is + 6dB You can use the following script, equivalent to the 1st hdspmixer preset : #! /bin/bash for out_left in $(seq 0 2 25); do let out_right=$out_left+1 let in_left=$out_left+26 let in_right=$out_right+26 amixer cset numid=5 $in_left,$out_left,32768 amixer cset numid=5 $in_left,26,16384 amixer cset numid=5 $in_right,$out_right,32768 amixer cset numid=5 $in_right,27,16384; done; Thomas
