After upgrading to Ub 10.10, no /dev/mixer!

Me too.

Ubuntu 10.10 desktop i386 - Live CD

bt8x8 card

After start, gnomeradio puts up a dialog: Could not open "/dev/mixer"!
And then that is can not open /dev/radio (no wonder, that name is not used by kernel for ages...)

After I change the radio device to /dev/radio0 gnomeradio starts, and it can fins stations, showing correct signal strengths. But nothing is heard.

I tried playing with the gnome Sound Preferences settings, but no success.
Playing ogg music files from hard drive works fine.

Ask for any other information.

Since I upgraded to 10.10, this bug ("Could not open /dev/mixer") affects me too. But after I click out of the error message, the sound gets through, although cannot control its level with the gnomeradio sound level. I can only control the global system sound (as usual).
My tuner card has an Audio Out jack which is connected to the Line In jack of my computer via an external minijack cable. Maybe this way of connecting it is the reason why I have sound, while the two other here do not. My tuner card is an old tuner card (2004 or 2005).

Multimedia video controller: Brooktree Corporation Bt878
Linux 2.6.35-22-generic

the world can be a dark place. after hours of playing around i typed

   modprobe snd-mixer-oss

in terminal ... and ... tadaa ... after starting gnomradio there is no more error message. volume control in gnomeradio also works as expected. now i typed

   echo snd-mixer-oss > /etc/modules

to solve this problem permanently.

hah ... and, for recording

   modprobe snd-pcm-oss

is needed, else there will be an error when pressing record-button. to solve this permamently

   echo snd-mixer-oss > /etc/modules

should be typed. hpefully this is all ...

As mentioned, I have also discovered that the GUI mixer was calling the
show. Without a /dev/mixer to
work with, neither gnomeradio or kradio's sound volume controls work at all.
But you can control the volume
from the mixer utility. If you want to turn the radio down and listen to
something else, well, kill the radio
program. And make sure it does a mute on exit.

I've tried to do the modprobe, but I get

FATAL: Module snd_mixer_oss not found.

I put in the dashes as you described. I searched the system for
snd-mixer-oss,
but the only ones I find were from older kernel versions (2.6.27-7,
2.6.28-11,
2.6.32-24). I do "apt-cache search snd-mixer-oss", and no go. Can you
look up what package those .ko files are in? I've tried a few, but no luck,
ie. oss4-base linux-sound-base (already loaded), not even in
linux-backports-modules-alsa-2.6.35-22...

A ray of hope shines in a dark and dreary wilderness!

murf

On Sat, Oct 23, 2010 at 12:52 AM, ... <email address hidden> wrote:

> hah ... and, for recording
>
> modprobe snd-pcm-oss
>
> is needed, else there will be an error when pressing record-button. to
> solve this permamently
>
> echo snd-mixer-oss > /etc/modules
>
> should be typed. hpefully this is all ...
>
> --
> After upgrading to Ub 10.10, no /dev/mixer!
> https://bugs.launchpad.net/bugs/637339
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “gnomeradio” package in Ubuntu: Confirmed
>
> Bug description:
> Binary package hint: gnomeradio
>
> To me, the sound system in Ubuntu is only half-functional. Now, under Ub
> 10.10, it's worse.
>
> In the last number of upgrades, "play sound.wav" would work about 1/2 the
> time, usually pretty arithmetically every-other-time. When no sound was
> generated, the sox player would act like it was playing. When it does play,
> it is often a bit scratchy.
>
> Gnomeradio has been working in 10.04, and the 8's and the 9's. Now, now
> without /dev/mixer, it doesn't push out any sound. Previous to the upgrade,
> gnomeradio played flawlessly, and belted out sound even when sox is just
> getting it out 1/2 the time.
>
> After I click out of the "Could not open "/dev/mixer"! alert, gnomeradio
> proceeds to operate as normal. The signal strength indication seems to work
> properly for detected radio stations, etc. It's just without the link to the
> sound card, I won't hear it.
>
> I looked in /dev for mixer, nothing. I tried Kradio, and it scanned for,
> and found, several channels. The card and its drivers seem to working OK.
>
> Any advise you might have will be appreciated. I'm sure I'm not the only
> guy with this problem.
>
> murf
>
> ProblemType: Bug
> DistroRelease: Ubuntu 10.10
> Package: gnomeradio 1.8-1
> ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
> Uname: Linux 2.6.35-20-generic i686
> Architecture: i386
> Date: Sun Sep 12 17:27:36 2010
> ProcEnviron:
> LANGUAGE=
> PATH=(custom, user)
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SourcePackage: gnomeradio
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/gnomeradio/+bug/637339/+subscribe
>

--

Steve Murphy

ParseTree Corporation

57 Lane ...

forgive me ... i am a little bit wrong here.

after upgrading from 10.04 to 10.10 i had these mixer problems so i tried to downgrade back to 10.04. but i make many mistakes.

since i am "new" to linux and not beeing very familar with it in detail, i decided to try out debian which uses kernel 2.6.26-X-686 and found same mixer problems there. my idea was that my modprobe idea could also be helpful on kernel shipped with ubuntu, even if i didn't install ubuntu again to test it.

elsewhere i can read that ubuntu developers removed different sound-things from current kernel. many users had tears in their eyes as i can see from results in search engines.

This bug is the same as bug #422696 and the reason is that OSS has been deleted from Maverick's kernel (bug #613809). I had fixed it as said on that bug (the last).