Hi, Thomas: In a different post from the one below, you recently suggested I should now be able to use amixer to set levels on the hdsp mf using the most recent, alsa 1.0.9RC1 driver. At least, that's how I understood your message. I'm still unable to do that, including with the script you provide below. The script runs without errors, but the values don't change no matter what value I put where you have 32768. >From amixer querry I get: #amixer cget numid=5 numid=5,iface=HWDEP,name='Mixer' ; type=INTEGER,access=rw---,values=3,min=0,max=65536,step=1 : values=0,0,0 Of course, having executed hdspmixer, I do have sound. I'm just unable to do my own settings yet. I thought it important to report this. thomas charbonnel writes: > 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 > -- Janina Sajka Phone: +1.202.494.7040 Partner, Capital Accessibility LLC http://www.CapitalAccessibility.Com Chair, Accessibility Workgroup Free Standards Group (FSG) janina@xxxxxxxxxxxxxxxxx http://a11y.org If Linux can't solve your computing problem, you need a different problem.
