On 13/10/07 17:47:22, Dominique Michel wrote: > Le Sat, 13 Oct 2007 12:06:31 +0100, > Barry Samuels <beejay.samuels@xxxxxxxxx> a écrit : > > > I have a computer with a Asus P5W DH DeLuxe mainboard and Intel HD > > on-board sound chip. I am running Debian Testing, up to date as of > > yesterday, with a 2.6.23 kernel. > > > > cat /proc/asound/cards: > > 0 [Intel ]: HDA-Intel - HDA Intel > > HDA Intel at 0xfebfc000 irq 17 > > > > I've had a LOT of trouble in getting Alsa to work with sound input > > via a microphone. Sound output via the speakers has never been a > > problem. > > > > The biggest problem is that the input sound is so inconsistent. For > > example - a few days ago I was running a 2.6.22.6 kernel and, after > > a lot of fiddling with mixer controls, I managed to get reasonable > > quality and volume of recorded sound. Then I upgraded the kernel as > > above. After that the sound actually improved a little and I even > > had to reduce input and output volume levels. Then I needed to > > reboot the machine and I ended up with sound that I could barely > > hear coupled with a tremdous hum - same kernel, same mixer > > settings. After many, many adjustments I decided that it was > > unusable in that state and left it. > > > > This morning I find that the hum has gone and although the sound > > volume level was low it could be improved using the 'mic boost' and > > there was no hum. > > > > My computer normally runs 24 hours a day so it wasn't changed in > > any way between yesterday and today. > > > > So I'm baffled. I seem to have these problems regularly if anything > > does change e.g. Debian updates, new kernel, computer reboot (not > > very often) and so on. > > > > I'm beginning to think that my machine is haunted. > > > > Will it ever be possible to get a stable Alsa system? > > > > The version of the different alsa packages must reasonably match with > the alsa driver. Another sources of trouble can be that udev load the > alsa driver before alsasound at boot time and the sound card order > can change. That especially if you have multiple sound card like a > webcam with mic or whatever. > This can be solved in the alsa config file /etc/modules.d/alsa with > something like: > > alias snd-card-0 snd-emu10k1 > options snd-emu10k1 index=0 > alias snd-card-1 snd-usb-audio > options snd-usb-audio index=1 > alias sound-slot-0 snd-card-0 > alias sound-slot-1 snd-card-1 > ... > options snd cards_limit=2 > > Another possible source of trouble after an upgrade > is /var/lib/alsa/asound.state > You must stop alsa: > /etc/init.d/alsasound stop > remove this file and restart alsa. > > Dominique I use the alsa modules from the kernel. I don't have anything called 'alsa' or 'alsasound' running. There is an /etc/init.d/alsa-utils which, I believe, saves and restores mixer settings. Does that make any difference? -- Barry Samuels http://www.beenthere-donethat.org.uk The Unofficial Guide to Great Britain ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
