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Old 05-31-2010, 07:04 PM   #1
ringwraith
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Registered: Sep 2003
Location: Indiana
Distribution: Slackware-current
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Sound problems-Slack 13.1 on iMac 9.1


I have installed 13.1 on a 24 inch iMac. I am not having any luck getting*
sound from my internal speakers. Most programs act like they think sound is*
playing. In xmms, I see the visualization stuff like it is playing. Just*
nothing audible. I hear nothing in Flash. In KDE, I hit the test button in*
the Control Center/Multimedia and I get no errors but no sound. Yes, I have*
run alsaconf, alsamixer (nothing muted), alsactl store...

Here is a link to my alsa information output script:
http://www.alsa-project.org/db/?f=93...aac51ccab184de

In /etc/modprobe.d/options, I have tried a couple different model names with*
no change.*

If I plug in my Bose speakers to the USB, I get sound out of them from some*
applications including KDE.

I appreciate any suggestions you might have.*
 
Old 06-02-2010, 05:54 AM   #2
business_kid
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Just the usual - run alsamixer, unmute everything, and then run alsactl store. You didn't say you did that.
 
Old 06-02-2010, 08:50 AM   #3
ringwraith
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Quote:
Originally Posted by business_kid View Post
Just the usual - run alsamixer, unmute everything, and then run alsactl store. You didn't say you did that.
Yes I did say that
"Yes, I have*
run alsaconf, alsamixer (nothing muted), alsactl store...", end of first paragraph.

I just tried Ubuntu as well and no sound on the internal speakers with it either... I tried to get help at the alsa IRC channel on freenode and not luck there either. Looks like I am just out of luck. Not that many people running slack on imacs apparently
I know it is probably weird.
 
Old 06-02-2010, 02:33 PM   #4
T3slider
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Well, it's using the snd-hda-intel module and that's always a barrel of fun. I'm pretty sure you're going to have to edit /etc/modprobe.d/sound.conf (or a similar file...I know things have changed in recent kernel versions. I'm still on 13.0 with /etc/modprobe.d/sound so I'm in the dark ages here) and add a model option. The ALC889A card is not really supported in ALSA fully (or at least wasn't until recently, if it is now) so the relevant documentation is a little less than helpful...but /usr/src/linux/Documentation/sound/alsa/HD-Audio-Models.txt should have the possible model options you can pass. It looks like you want options under the ALC882/885 (/889A but I'm not sure that the docs list that as an option) section since they are fairly compatible. If I were you (and I'm not) I would try the following *in runlevel 3* before X has started.

Unload the snd-hda-intel module by running (as root):
Code:
# modprobe -r snd-hda-intel
Add the following line to /etc/modprobe.d/sound.conf or equivalent:
Code:
options snd-hda-intel model=imac24
Load the snd-hda-intel module by running (as root):
Code:
# modprobe snd-hda-intel
Then run `alsamixer` as your normal user, max out the sound levels, unmute everything, and then run (as root)
Code:
# alsactl store
Then try playing the worst sound known to man by running the following (as your regular user):
Code:
$ aplay /dev/urandom
Ctrl+C to stop that terrible noise, assuming it plays. If it does, your sound is working...if not, repeat the above, trying out other models (Google tells me mbp3 might work as well).

[edit] You should also make sure your user is in the audio group. [/edit]

Last edited by T3slider; 06-02-2010 at 02:37 PM.
 
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Old 06-02-2010, 03:08 PM   #5
powerball
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Registered: Jun 2010
Distribution: Slackware-14.1
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No sound in iMac9,1 :(

Hi ringwraith, I'm in the same boat as you. I have an iMac 20" dual-boot Slackware 13.1 and have gotten poor audio adding the below to my "/etc/modprobe.d/alsa-base.conf".

Code:
options snd-hda-intel model=imac91
A few months ago I also got sound reasonably well in Ubuntu 9.10 using the "alsa-driver-1.0.22.1-mb5.patch". Good luck man!
 
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Old 06-02-2010, 04:15 PM   #6
ringwraith
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Today, I downloaded and installed the daily snapshot of the alsa drivers. I configured as hda-intel and then a install-modules. I now have sound working to my internal speakers. Curiously alsaconf can not find any cards to probe. I also need to back up the steps now to get my Bose USB speakers working, but I am sure that is just another ./configure option to add along with the hda-intel.

Thanks for the ideas T3 and powerball. I had tried both those options at one point or another. I went through 6 or 7 different models to see if they would work. I thought it was weird the way everything seemed to think they were playing but no sound.
 
  


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