From: bugtrack@alsa-project.org
To: alsa-devel@alsa-project.org
Subject: [ALSA - driver 0002321]: no audio and very few mixer options with C-Media 106 based USB sound card
Date: Fri, 4 Aug 2006 01:21:44 +0200 [thread overview]
Message-ID: <0a8821ad91f37bbbaab37a4e2293c947@bugtrack.alsa-project.org> (raw)
A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2321>
======================================================================
Reported By: doobedoobedo
Assigned To: Clemens Ladisch
======================================================================
Project: ALSA - driver
Issue ID: 2321
Category: USB - usb-audio
Reproducibility: always
Severity: major
Priority: normal
Status: assigned
Distribution: Gentoo
Kernel Version: 2.6.14/5
======================================================================
Date Submitted: 08-01-2006 16:43 CEST
Last Modified: 08-04-2006 01:21 CEST
======================================================================
Summary: no audio and very few mixer options with C-Media 106
based USB sound card
Description:
no audio output with the snd-usb-audio module
amixer output:
Simple mixer control 'PCM',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 4095
Front Left: Capture 2048 [50%] [on]
Front Right: Capture 2048 [50%] [on]
Simple mixer control 'PCM Capture Source',0
Capabilities: enum
Items: 'Mic' 'Input 1' 'Input 2' 'Mixer'
Item0: 'Mic'
Simple mixer control 'PCM',1
Capabilities: cvolume
Capture channels: Front Left - Front Right
Limits: Capture 0 - 4095
Front Left: Capture 2048 [50%]
Front Right: Capture 2048 [50%]
Simple mixer control 'Mic',0
Capabilities: pvolume cvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 8191 Capture 0 - 4095
Front Left: Playback 2048 [25%] [off] Capture 2048 [50%]
Front Right: Playback 2048 [25%] [off] Capture 2048 [50%]
Simple mixer control 'Auto Gain Control',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Speaker',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 8191
Mono:
Front Left: Playback 2048 [25%] [on]
Front Right: Playback 2048 [25%] [on]
Simple mixer control 'Speaker',1
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 37
Mono: Playback 15 [41%] [on]
speaker 0 and mic will only decrease in volume in alsamixer, although no
sound is played trough the speakers at all.
======================================================================
----------------------------------------------------------------------
doobedoobedo - 08-04-06 00:58
----------------------------------------------------------------------
It's mythtv that's the problem and as it's going to be attached to my myth
box it's fairly critical to me that volume control works... but I agree
that mythtv should have better configuration to allow it.
But anyway I applied this patch:
--- alsa-driver-1.0.11.orig/alsa-kernel/usb/usbmixer_maps.c
2006-03-16 08:25:56.000000000 +0000
+++ alsa-driver-1.0.11/alsa-kernel/usb/usbmixer_maps.c 2006-08-03
22:49:09.000000000 +0100
@@ -234,6 +234,15 @@
{ 0 } /* terminator */
};
+/* C-Media 106 based card from Asound - hack to get only working volume
control marked as Master */
+static struct usbmix_name_map cm106_map[] = {
+ { 3, NULL }, /* was Speaker Playback Switch */
+ { 4, NULL }, /* was Speaker Playback */
+ { 5, "Master Playback Switch" }, /* was Speaker 1 Playback Switch
*/
+ { 6, "Master Playback" }, /* was Speaker 1 Playback */
+ { 0 } /* terminator */
+};
+
/*
* Control map entries
*/
@@ -276,6 +283,10 @@
.id = USB_ID(0x0c45, 0x1158),
.map = justlink_map,
},
+ {
+ .id = USB_ID(0x0d8c, 0x0006),
+ .map = cm106_map,
+ },
{ 0 } /* terminator */
};
Which didn't work - any ideas why?
----------------------------------------------------------------------
rlrevell - 08-04-06 01:21
----------------------------------------------------------------------
No idea.
Can't you just patch MythTV?
Issue History
Date Modified Username Field Change
======================================================================
08-01-06 16:43 doobedoobedo New Issue
08-01-06 16:43 doobedoobedo Distribution => Gentoo
08-01-06 16:43 doobedoobedo Kernel Version => 2.6.14/5
08-01-06 16:51 doobedoobedo Issue Monitored: doobedoobedo
08-01-06 16:54 doobedoobedo Note Added: 0011376
08-03-06 03:40 doobedoobedo Note Added: 0011393
08-03-06 17:34 doobedoobedo Note Added: 0011404
08-03-06 19:15 rlrevell Note Added: 0011407
08-03-06 20:32 doobedoobedo Note Added: 0011408
08-03-06 20:37 rlrevell Note Added: 0011409
08-03-06 23:02 doobedoobedo Note Added: 0011410
08-03-06 23:13 rlrevell Note Added: 0011411
08-04-06 00:58 doobedoobedo Note Added: 0011412
08-04-06 01:21 rlrevell Note Added: 0011413
======================================================================
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next reply other threads:[~2006-08-03 23:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 23:21 bugtrack [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-08-05 15:16 [ALSA - driver 0002321]: no audio and very few mixer options with C-Media 106 based USB sound card bugtrack
2006-08-04 0:06 bugtrack
2006-08-03 23:54 bugtrack
2006-08-03 23:31 bugtrack
2006-08-03 22:58 bugtrack
2006-08-03 21:13 bugtrack
2006-08-03 21:02 bugtrack
2006-08-03 18:37 bugtrack
2006-08-03 18:32 bugtrack
2006-08-03 17:15 bugtrack
2006-08-03 15:34 bugtrack
2006-08-03 1:40 bugtrack
2006-08-01 14:54 bugtrack
2006-08-01 14:43 bugtrack
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