No Sound FC5, device detected (Power Mac sound)

paz117 · 05-21-2006, 06:52 PM

I have never heard sound in the fedora petition on this computer, it seems to be detecting the sound card but then i don't hear anything when playing the test sound. I have't been using linux for very long so i don't really know what im talking about but at startup i get an error no /dev/pmu found, i was thinking these are related but im not sure. When i try to run "volume control" i get No volume control or GStreamer plugins and/or devices found.

system-config-soundcard identifies the right card, but i do not hear a sound. Command line issues amixer: Mixer attach default error: no such device.

anyone know what is going on, any help would be appreciated.

thanks

Simon Bridge · 05-23-2006, 04:21 AM

pmu = power management unit ... found in PPC machines.

Check if /dev/pmu is present. Check that pmu is active as a service.

It dosn't sound like anything that should affect your soundcard though - unless the power management has switched it off?

run lspci and post the line about your soundcard here.
run lsmod | grep snd and say what you get (suspect nothing will be printed)

run alsamixer and post the output here if you get an error.

after you try a test sound, run dmesg | tail and see if there is anything about the sound in it. (Or just look through the whole syslog).

paz117 · 05-23-2006, 04:48 PM

I'm on an IMAC G5, and because my fedora install was so recent and i wasn't making progress in this install i decided to try another distro out. Im in SuSE now with the same exact problem. I get the same exact results from the same apps i try to start, like totem etc.

lspci

Code:

f0:0b.0 Host bridge: Apple Computer Inc. U3L AGP Bridge
f0:10.0 VGA compatible controller: nVidia Corporation NV34M [GeForce FX Go5200] (rev a1)
0001:00:01.0 PCI bridge: Apple Computer Inc. Shasta PCI Bridge
0001:00:02.0 PCI bridge: Apple Computer Inc. Shasta PCI Bridge
0001:00:03.0 PCI bridge: Apple Computer Inc. Shasta PCI Bridge
0001:01:01.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)
0001:01:07.0 Class ff00: Apple Computer Inc. Shasta Mac I/O
0001:01:0b.0 USB Controller: NEC Corporation USB (rev 43)
0001:01:0b.1 USB Controller: NEC Corporation USB (rev 43)
0001:01:0b.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
0001:02:0c.0 IDE interface: Broadcom K2 SATA
0001:02:0d.0 Class ff00: Apple Computer Inc. Shasta IDE
0001:02:0e.0 FireWire (IEEE 1394): Apple Computer Inc. Shasta Firewire
0001:03:0f.0 Ethernet controller: Apple Computer Inc. Shasta (Sun GEM)

lsmod searching for snd

Code:

snd_pcm_oss            90024  0
snd_mixer_oss          45928  1 snd_pcm_oss
snd_seq               114216  0
snd_seq_device         29904  1 snd_seq
snd_powermac           99664  0
snd_pcm               164804  2 snd_pcm_oss,snd_powermac
snd_page_alloc         31448  1 snd_pcm
snd_timer              55120  2 snd_seq,snd_pcm
snd                   119144  7 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_powermac,snd_pcm,snd_timer
soundcore              31088  1 snd

alsa mixer

Code:

alsamixer: function snd_ctl_open failed for default: No such device

im not getting the pmu error anymore at startup so i think that was a fedora problem.

going into yast and alsasound and enable
/etc/init.d/resmgr start returned 0 (success):
Starting resource manager..done
/etc/init.d/alsasound start returned 1 (unspecified error):
Starting sound driver: powermac..done

this is what i get when i try and test sound in gstreamer
ALSA - Advanced Linux Sound Architecture: Could not open resource for writing.
"could not open resource for writing"

nothing in dmesg after test sound

thanks again

Simon Bridge · 05-23-2006, 06:09 PM

Well - lspci does not seem to list a sound card (point it out if I missed it) so it isn't declaring itself for some reason. I mean: I guess there is one and it works?

This will be a HW issue - something conflicting? Perhaps just reversing the order of a probe will work - but we need to know what the card is to know what to do. Consult the manual.

If you are prepared to try different distros - yellowdog linux claims to support your laptop. (yellowdog is explicitly made for the PPC.)

Simon Bridge · 05-23-2006, 06:10 PM

hmmm... not in the HCL: you'll want to add an entry when you're done.

paz117 · 05-23-2006, 09:49 PM

hey again,
The card is a Burr Brown PCM3052, i find it hard to believe however that it just doesn't work. I couldn't find anyone else with the same exact problem and if thats how its working with this hardware youd think there would be someone else out there who has tried it with the same conditions.

im looking into YDL

thanks again for the help!!

paz117 · 05-26-2006, 01:07 PM

YDL seems outdated but either way didn't work, still with SuSE but no luck on the sound. I think the problem is something with just this computer useing Ubuntu Live CD on another PPC sound works fine.

pete

Simon Bridge · 05-28-2006, 01:07 AM

...and sound won't work for ubuntu live on this one? Is the other PPC with the same HW constellation? (lspci again)

sandoz · 08-07-2006, 04:10 AM

Hi. I had the same problem with a G4. I could see the sound card in the Sound Card Detection app. but not when I ran lscpi. There was nothing when i ran lsmod | grep snd.

Anyway, as I was troubleshooting the sound just started working. Now I have the following output from lsmod:
snd_powermac 53836 0
snd_seq_dummy 4004 0
snd_seq_oss 42580 0
snd_seq_midi_event 8576 1 snd_seq_oss
snd_seq 67136 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 11148 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss 65296 0
snd_mixer_oss 22560 1 snd_pcm_oss
snd_pcm 105380 2 snd_powermac,snd_pcm_oss
snd_timer 30404 2 snd_seq,snd_pcm
snd 72724 8 snd_powermac,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 11652 1 snd
snd_page_alloc 12392 1 snd_pcm

Still nothing from lscpi... ?

dmesg has a long list of issues like:
IN from bad port 3d3 at c03b3c14
IN from bad port 3d3 at c03b3bec
IN from bad port 3d3 at c03b3c14
Not sure what those mean.

Sorry if this isn't helpful. Just thought I'd share.