[Mageia-dev] no sound

Sat May 5 18:05:50 CEST 2012

'Twas brillig, and Felix Miata at 05/05/12 16:09 did gyre and gimble:
+> 1 sink(s) available.
+>   * index: 0
+> 	name: <alsa_output.pci-0000_00_1f.5.analog-stereo>
+> 	driver: <module-alsa-card.c>
+> 	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
+> 	state: SUSPENDED
+> 	suspend cause: IDLE 
+> 	priority: 9959
+> 	volume: 0: 100% 1: 100%
+> 	        0: 0.00 dB 1: 0.00 dB
+> 	        balance 0.00
+> 	base volume:  63%
+> 	             -12.00 dB
+> 	volume steps: 65537
+> 	muted: no
+> 	current latency: 0.00 ms
+> 	max request: 0 KiB
+> 	max rewind: 0 KiB
+> 	monitor source: 0
+> 	sample spec: s16le 2ch 48000Hz
+> 	channel map: front-left,front-right
+> 	             Stereo
+> 	used by: 0
+> 	linked by: 0
+> 	configured latency: 0.00 ms; range is 0.50 .. 341.33 ms
+> 	card: 0 <alsa_card.pci-0000_00_1f.5>
+> 	module: 4
+> 	properties:
+> 		alsa.resolution_bits = "16"
+> 		device.api = "alsa"
+> 		device.class = "sound"
+> 		alsa.class = "generic"
+> 		alsa.subclass = "generic-mix"
+> 		alsa.name = "Intel ICH5"
+> 		alsa.id = "Intel ICH"
+> 		alsa.subdevice = "0"
+> 		alsa.subdevice_name = "subdevice #0"
+> 		alsa.device = "0"
+> 		alsa.card = "0"
+> 		alsa.card_name = "Intel ICH5"
+> 		alsa.long_card_name = "Intel ICH5 with AD1981B at irq 5"
+> 		alsa.driver_name = "snd_intel8x0"
+> 		device.bus_path = "pci-0000:00:1f.5"
+> 		sysfs.path = "/devices/pci0000:00/0000:00:1f.5/sound/card0"
+> 		device.bus = "pci"
+> 		device.vendor.id = "8086"
+> 		device.vendor.name = "Intel Corporation"
+> 		device.product.name = "82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller"
+
+
+Ahh yes, AC'97.. I think I've had issues with these before.... It's also
+the default device under VirtualBox and when I looked last we don't seem
+to control the "Master" channel. More below.
+
+> 		device.form_factor = "internal"
+> 		device.string = "front:0"
+> 		device.buffering.buffer_size = "65536"
+> 		device.buffering.fragment_size = "65536"
+> 		device.access_mode = "mmap+timer"
+> 		device.profile.name = "analog-stereo"
+> 		device.profile.description = "Analog Stereo"
+> 		device.description = "Built-in Audio Analog Stereo"
+> 		alsa.mixer_name = "Analog Devices AD1981B"
+> 		alsa.components = "AC97a:41445374"
+> 		module-udev-detect.discovered = "1"
+> 		device.icon_name = "audio-card-pci"
+> 	ports:
+> 		analog-output-mono;output-amplifier-on: Analog Mono Output / Amplifier (priority 5010, available: unknown)
+> 			properties:
+> 				
+> 		analog-output-mono;output-amplifier-off: Analog Mono Output / No Amplifier (priority 5000, available: unknown)
+> 			properties:
+> 				
+> 		analog-output-lfe-on-mono;output-amplifier-on: LFE on Separate Mono Output / Amplifier (priority 4010, available: unknown)
+> 			properties:
+> 				
+> 		analog-output-lfe-on-mono;output-amplifier-off: LFE on Separate Mono Output / No Amplifier (priority 4000, available: unknown)
+> 			properties:
+> 				
+> 	active port: <analog-output-mono;output-amplifier-on>
+
+Yeah I think I've seen this in a VM.
+
+Can you also attach "amixer -c0" (before running the below commands).
+
+More specifically I suspect that the "Master" channel is 0+muted or
+otherwise doing very little.
+
+A couple things that should get sound are:
+ (as root) alsactl init 0
+
+This should "initialise" your card to sensible default which should set
+Master to 55% unmuted.
+
+If that doesn't work, can you try "amixer -c0 set Master 55% unmute"
+
+
+Hopefully that'll get sound, but the correct fix is for me to fix this
+in PulseAudio...
+
+Col
+
+
+
+
+-- 
+
+Colin Guthrie
+colin(at)mageia.org
+http://colin.guthr.ie/
+
+Day Job:
+  Tribalogic Limited http://www.tribalogic.net/
+Open Source:
+  Mageia Contributor http://www.mageia.org/
+  PulseAudio Hacker http://www.pulseaudio.org/
+  Trac Hacker http://trac.edgewall.org/
+