sound was working, now gone

ferrix · 2004-10-29 00:37:59

I rebooted my system and found the sound (which worked just fine until now) is gone... there were no changes in hardware or any major additions to the system - I've just been running the regular pacman -Syu, and I think one of updates sometime between now and the last reboot some 30 days ago messed something up... In KDE the mixer icon is now crossed out and playing with the mixer settings doesn't help. Neither Amarok nor Kaffeine have sound, and alsamixer shows the master is OFF, but won't let me turn it on again. What can I do?

this is my /etc/modprobe.conf:
# alsa stuff
alias char-major-116 snd
alias snd-card-0 snd-emu10k1
alias sound-slot-0 snd-card-0

# Soundcard 1 (OSS Emulation)
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

# Sound lookup entries for devfs support
alias /dev/dsp sound-service-0-3
alias /dev/sequencer sound-service-0-1
alias /dev/mixer sound-service-0-0

these are modules started in rc.conf:
MODULES=(!usbserial !ide-scsi snd-emu10k1 snd-mixer-oss snd-seq-oss snd-pcm-oss)

and lsmod reports:
Module Size Used by
radeon 134228 2
8139too 26624 0
mii 5888 1 8139too
crc32 4864 1 8139too
snd_pcm_oss 57384 0
snd_seq_midi 9248 0
snd_emu10k1_synth 8704 0
snd_emux_synth 40704 1 snd_emu10k1_synth
snd_seq_virmidi 8576 1 snd_emux_synth
snd_seq_midi_emul 8832 1 snd_emux_synth
snd_seq_oss 36736 0
snd_seq_midi_event 8576 3 snd_seq_midi,snd_seq_virmidi,snd_seq_oss
snd_seq 59024 8 snd_seq_midi,snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_oss,snd_seq_midi_event
snd_mixer_oss 20992 1 snd_pcm_oss
snd_emu10k1 102920 1 snd_emu10k1_synth
snd_rawmidi 26660 3 snd_seq_midi,snd_seq_virmidi,snd_emu10k1
snd_pcm 104708 2 snd_pcm_oss,snd_emu10k1
snd_timer 28164 2 snd_seq,snd_pcm
snd_seq_device 8584 7 snd_seq_midi,snd_emu10k1_synth,snd_emux_synth,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi
snd_ac97_codec 71684 1 snd_emu10k1
snd_page_alloc 12168 2 snd_emu10k1,snd_pcm
snd_util_mem 5120 2 snd_emux_synth,snd_emu10k1
snd_hwdep 9988 2 snd_emux_synth,snd_emu10k1
snd 60260 16 snd_pcm_oss,snd_seq_midi,snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq_midi_event,snd_seq,s
d_mixer_oss,snd_emu10k1,snd_rawmidi,snd_pcm,snd_timer,snd_seq_device,snd_ac97_codec,snd_util_mem,snd_hwdep
soundcore 11104 1 snd
rtc 14408 0

the kernel is 2.6.8.1

z4ziggy · 2004-10-29 05:01:56

try to login into kde with root, see if u do get sound. if all works fine, it permissions problems. i dont know much about devfs since i was in a hurry to switch to udev as soon as it was out... maybe u can find some more info using dmesg. also, search the forums

ferrix · 2004-10-29 10:24:23

well duh, it was a permission problem... it turns out /dev/dsp was now owned by root group root - in hindsight, it would be the obvious thing to check, but I never expected settings like these to just change willy-nilly, you know? Anyway, I changed it to back to root group audio, and sound came back. Why and when did the ownership change? God only knows... just one of these things I suppose.

z4ziggy · 2004-10-29 10:38:48

i think sometimes configuration files gets overwritten, but then pacman saves the old config with .pacsave suffix - this happens i think when something is also changed in the new package release so pacman makes sure you will have valid config to work with latest version.

Arch Linux

#1 2004-10-29 00:37:59

sound was working, now gone

#2 2004-10-29 05:01:56

Re: sound was working, now gone

#3 2004-10-29 10:24:23

Re: sound was working, now gone

#4 2004-10-29 10:38:48

Re: sound was working, now gone

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