I'm sorry that I've obviously phrased this question all wrong. so I'll try to be a little bit more detailed this time. I have now installed Mandrake 10.1 on the machine. and now aplay -l does indeed report the existance of UA-100 card kscd shows all the typical signs of playing a cd, it lists tracks, it starts counting when play is pressed, But no sound emerges. amixer reports no mixer elements, or nothing. /proc/asound/cards displays an endless stream of 0 [UA100 ]: USB-Audio - UA - 100 Roland UA - 100 at usb-0000:00:07.2 - 2, full speed if I try to select a Device with aplay -D= ***** nothing I type in seems to make any sense to it. if I try to list pcm devices to plug into the above line with aplay -D the results are to say the least incomprehensable. Where do I go next? This used to work when I installed 9.2 originally but I have been poking & proding for 4 days now and It still desn't work. ONce again I apologies for the way I present my questions but I am NOT pestering before trying, I am on a last ditch attempt to play a CD on a linux box. I won't bore you with my background, but I have a little involvement in the synth, computing and audio field and yet this is now getting way beyond a joke. I have had this playing with Micheal Minns MMUSAUDIO . However ALSA seems the way to go for all things Audio and Linux. So how do you check the signal path in a system? and what do you do if a device appears not to be supported by the mixing facilities? Chris Lyon Chris Lyon wrote: > /proc/asound/cards reports > > 0 [rev20 ]:VIA686A -VIA 82C686A/B rev20 > VIA 82C686A/B rev20 at 0xac00, > irq 11 > 1 [UA100 ]: USB-Audio - UA-100 > Roland UA-100 at usb-00:07.2-2 > > So it looks like something is seen but how do I get aplay to play to the > UA-100? The VIA card has alway's reported itself but neither windows, > linux or anything else has ever got any life out of it! > > so do I use the aplay to select the card even thou, aplay -l doesn't > list it? > > Chris > > > > Chris Lyon wrote: > >> Dear all, >> >> Roland UA-100 plugged into PC, usbview detects interface. >> >> aplay -l doesn't report any knowledge of the device. >> >> I believe I have loaded the appropriate modules, snd-usb-audio but >> the system resolutely refuses to make music as it has before. I would >> include the appropriate modules.conf files to show but this E-mailing >> machine and the linux box are not connected and I feel cross reading >> would be a little error strewn. >> >> Can anyone outline a procedure for checking at which point a problem >> might occur and, if possible, a list of command line utilities that >> can reveal precisely what components are loaded. Is it possible to >> load modules incompletly such that a component identifies it's >> presence but isn't actual functioning. If this is so how does one >> check the dependancies? >> >> I understand that amix and alsamixer won't recognise the presence of >> a USB connected audio interface, is this the case? >> >> Any help appreciated. >> >> Chris Lyon >> >> >> > > > >