ALSA Problem - No mixer found

Message

luizferp · Post by **luizferp** » Tue Mar 01, 2005 11:58 am

People,

Yesterday I updated the udev package and since then my sound got an strange behaviour. The sound keeps all the time muted and when I try to increase the volume it come back to the level zero. When I try to open the "Volume Control" on gnome, it appears the following message: "Sorry, no mixer element, and/or device found". I tried to reemerge alsa-tools, alsa-lib and gnome-alsamixer but the problem persists. Does anybody know what is happening?

Luiz.

corefile · Post by **corefile** » Wed Mar 02, 2005 7:00 pm

check your permsions on /dev/sound, I think I saw something about that

placeholder · Post by **placeholder** » Wed Mar 02, 2005 7:36 pm

ALSA actually does not use /dev/sound, that is just for the OSS emulation. On the other hand, it does use /dev/snd so check the permissions on that and check to see that your user is in the audio group.

Arainach · Post by **Arainach** » Wed Mar 02, 2005 10:29 pm

I had that problem for the longest time with the Gnome Volume Control. No idea if I ever fixed it or not. Try gnome-alsa-mixer instead.

corefile · Post by **corefile** » Wed Mar 02, 2005 10:52 pm

yes thats it, /dev/snd

I believe there is an issue wih udev and pam fighting over the persmission, actually udev sets them then pam redoes the permissions and they are not correct.

just remove /etc/security/console.perms (since pam is really not needed this wil not cause a problem)

see more here:

http://forums.gentoo.org/viewtopic-t-30 ... sound.html

tchick · Post by **tchick** » Fri Mar 04, 2005 6:49 pm

Hi *,

I have the same behaviour here, but I'm not using udev. Permissions for /dev/sound/* seems to be correct, more, it's all the same for root. And it happens on my ibook (ppc platform, no alsa) and on my AMD64 (with alsa). All starts with an update 2 days ago, but no I have no idea what package could be the reason. Any ideas?

jc00001 · Post by **jc00001** » Sun Mar 13, 2005 7:31 am

I had this same problem. im a total gentoo noob, and havent used linux for about 3 years, i just decided a few days ago to play around with gentoo since ive heard some pretty good things about it and had an old athlon tbird machine laying around. so maybe this isnt the best solution, but i fixed it and ill tell you how:

basically i followed the guide at http://www.gentoo.org/doc/en/alsa-guide.xml. no sound (although i later realized i didnt have alsa in my USE variables pretty so i just got oss emulatoin up since i didnt feel like recompiling a couple things). so i just went through /etc/modules.d/alsa to look around and went to the oss section at the very bottom. it used to look like:

Code: Select all

alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss

and i changed it to:

Code: Select all

alias /dev/sound/mixer snd-mixer-oss
alias /dev/sound/dsp snd-pcm-oss
alias /dev/sound/midi snd-seq-oss

not sure if what i did is the best way, but it worked.