[Mageia-dev] No sound after reboot.

Thu Dec 15 03:02:40 CET 2011

On Wed, 14 Dec 2011 10:27:55 +0000
+Colin Guthrie <mageia at colin.guthr.ie> wrote:
+
+> > Sound card is c-media and is properly detected in both harddrake and
+> > alsaconf and uses the snd_cmipci driver and is set to use
+> > pulseaudio.
+> > 
+> > Driver and modules are loaded
+> > 
+> > [root at SuperSize ~]# lspcidrake -v |grep AUDIO
+> > snd_cmipci      : C-Media Electronics Inc|CM8738 [MULTIMEDIA_AUDIO]
+> > (vendor:13f6 device:0111 subv:584d subd:3731) (rev: 10)
+> > [root at SuperSize ~]# lsmod |grep snd 
+> > snd_cmipci             40460  0 
+> > gameport               14963  1 snd_cmipci
+> > snd_pcm                84041  1 snd_cmipci
+> > snd_page_alloc         18101  1 snd_pcm
+> > snd_opl3_lib           18620  1 snd_cmipci
+> > snd_timer              28855  2 snd_pcm,snd_opl3_lib
+> > snd_hwdep              13515  1 snd_opl3_lib
+> > snd_mpu401_uart        13992  1 snd_cmipci
+> > snd_rawmidi            29657  1 snd_mpu401_uart
+> > snd_seq_device         14136  2 snd_opl3_lib,snd_rawmidi
+> > snd                    70007  8
+> > snd_cmipci,snd_pcm,snd_opl3_lib,snd_timer,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device
+> > soundcore              14491  1 snd
+> > 
+> > But the card is not detected by pulseaudio
+> > Running PulseAudio Volumne Control:
+> > Shows only for Dummy Output
+> > Configuration:
+> > Shows: No cards available for configuration  
+> 
+> Generally this relates to a permissions issue (although it can also
+> indicate a problem with dbus)
+> getfacl
+> 1. cat /proc/asound/cards
+> 2. getfacl /dev/snd/pcm*
+> 3. sudo fuser -v /dev/snd/pcm*
+
+[charles at SuperSize ~]$ cat /proc/asound/cards
+ 0 [CMI8768        ]: CMI8738-MC8 - C-Media CMI8768
+                      C-Media CMI8768 at 0x9c00, irq 18
+
+[charles at SuperSize ~]$ getfacl /dev/snd/pcm*
+: Removing leading '/' from absolute path names
+# file: dev/snd/pcmC0D0c
+# owner: root
+# group: audio
+user::rw-
+group::rw-
+other::---
+
+# file: dev/snd/pcmC0D0p
+# owner: root
+# group: audio
+user::rw-
+group::rw-
+other::---
+
+# file: dev/snd/pcmC0D1p
+# owner: root
+# group: audio
+user::rw-
+group::rw-
+other::---
+
+# file: dev/snd/pcmC0D2c
+# owner: root
+# group: audio
+user::rw-
+group::rw-
+other::---
+
+# file: dev/snd/pcmC0D2p
+# owner: root
+# group: audio
+user::rw-
+group::rw-
+other::---
+
+I do not use sudo so there is no output for the 3rd query but from #2
+it would appear that it is indeed a permission issue as user charles
+is not listed as having access.
+
+I've worked around the issue (a band-aid only) by adding user charles to
+the audio group and again have working sound.
+
+
+    Charles
+
+
+-- 
+AUTHOR
+FvwmAuto just appeared one day, nobody knows how.
+	-- FvwmAuto(1x)
+----------------------
+Mageia release 2 (Cauldron) for x86_64$
+On SuperSize....http://www.eslrahc.com
+Registered Linux user #182463
+3.1.5-tmb-server-1.mga2 x86_64
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