On Thu, Sep 20, 2007 at 11:00:36 +0100, Barry Samuels wrote: > I've been struggling with this for days without getting anywhere. I've > done endless searches and made some previous postings without any > useful results. > > Debian Testing up to date as of today. > Kernel 2.6.22.6 plus alsa modules > > What is really irritating is that if I boot the same machine using a > Knoppix v5 live CD it all works properly.
That is a good sign because it means that Linux does support your hardware. It would be cause for concern if Knoppix did not manage to get the card working. > Playback seems to work but recording does not. > > If I record my voice using the microphone the result is of rather low > volume accompanied by an obvious hiss or hum and something that sounds > like a motorbike engine. The first thing we need to know is the model of your sound card. Post the output of lspci | egrep -i 'audio|s(ou)?nd|media' As the next step I would simply compare the Knoppix (audio) setup to your normal installation. For a start I would like to see the output of the following three commands uname -a lsmod | grep snd cat /dev/sndstat for both Knoppix and your Lenny system. > If I try to record using my USB record turntable with Audacity the > resulting sound is very choppy but Knoppix does it perfectly. That might be some sort of kernel latency or USB throughput problem. You could try to compile a new kernel for your Debian system, using the configuration file - and maybe also the source package - of the Knoppix kernel. > I noticed that when using Knoppix the sound devices listed in Audacity > are /dev/dsp, dsp1 and dsp2 but running my normal operating system I > get names like 'ALSA: HDA Intel ALC882 Analog (hw:0,0)' I never used Audacity so I cannot comment on that. I think it is better to try to diagnose and fix driver problems using command line tools. > Can anyone suggest a course of action? -- Regards, | http://users.icfo.es/Florian.Kulzer Florian | -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
