Hi Matt, Colin, Recently I was made aware of ticket #1000 [0] in which quite a few 6.06.1 users of AC'97 codecs are not able to record audible stereo microphone input. A bug report has been filed [1] to track the resolution of this issue for 6.06.1. A straightforward fix [2] is available in a newer upstream version of alsa-lib (1.0.11, so 6.10 is not affected, nor are earlier Ubuntu versions).
Attached please find a SRU debdiff against 6.06.1's alsa-lib source package. $ debdiff alsa-lib_1.0.10-2ubuntu4.dsc alsa-lib_1.0.10-2ubuntu4.1.dsc |diffstat alsa-lib-1.0.10/debian/changelog | 11 ++++++++++ alsa-lib-1.0.10/debian/patches/00list | 1 debian/patches/25_fix_stereo_line_capture.dpatch | 24 +++++++++++++++++++++++ 3 files changed, 36 insertions(+) [0] https://launchpad.net/distros/ubuntu/+ticket/1000 [1] https://launchpad.net/distros/ubuntu/+source/alsa-lib/+bug/62855 [2] http://hg-mirror.alsa-project.org/alsa-lib?cmd=changeset;node=71eb744cd5be42cd7ebd14edf5f3f2e2da6ba35d;style=gitweb Thanks, -- Daniel T. Chen [EMAIL PROTECTED] GPG key: 0xC88ABDA3 diff -u alsa-lib-1.0.10/debian/changelog alsa-lib-1.0.10/debian/changelog --- alsa-lib-1.0.10/debian/changelog +++ alsa-lib-1.0.10/debian/changelog @@ -1,3 +1,14 @@ +alsa-lib (1.0.10-2ubuntu4.1) dapper-proposed; urgency=low + + * Add debian/patches/25_fix_stereo_line_capture.dpatch that fixes + inaudible recording of stereo microphone input. Patch backported + from 1.0.11 referenced at + http://hg-mirror.alsa-project.org/alsa-lib?cmd=changeset;node=71eb744cd5be42cd7ebd14edf5f3f2e2da6ba35d;style=raw + (Closes Ubuntu ticket #1000, bug #62855). Thanks, Jeff Meininger + and others. + + -- Daniel T Chen <[EMAIL PROTECTED]> Thu, 28 Sep 2006 17:34:12 -0400 + alsa-lib (1.0.10-2ubuntu4) dapper; urgency=low * debian/patches: Add: diff -u alsa-lib-1.0.10/debian/patches/00list alsa-lib-1.0.10/debian/patches/00list --- alsa-lib-1.0.10/debian/patches/00list +++ alsa-lib-1.0.10/debian/patches/00list @@ -16,0 +17 @@ +25_fix_stereo_line_capture only in patch2: unchanged: --- alsa-lib-1.0.10.orig/debian/patches/25_fix_stereo_line_capture.dpatch +++ alsa-lib-1.0.10/debian/patches/25_fix_stereo_line_capture.dpatch @@ -0,0 +1,24 @@ +#! /bin/sh /usr/share/dpatch/dpatch-run +## 25_fix_stereo_line_capture.dpatch by <[EMAIL PROTECTED]> +## +## All lines beginning with `## DP:' are a description of the patch. +## DP: Fixes stereo line capture bug in simple mixer API: +## DP: http://hg-mirror.alsa-project.org/alsa-lib?cmd=changeset;node=71eb744cd5 +## DP: be42cd7ebd14edf5f3f2e2da6ba35d;style=gitweb + [EMAIL PROTECTED]@ + +diff -ru alsa-lib-1.0.10.orig/src/mixer/simple_none.c alsa-lib-1.0.10/src/mixer/simple_none.c +--- alsa-lib-1.0.10.orig/src/mixer/simple_none.c 2005-08-24 05:41:16.000000000 -0500 ++++ alsa-lib-1.0.10/src/mixer/simple_none.c 2005-12-02 07:39:24.000000000 -0600 +@@ -768,7 +768,9 @@ + if (cchannels > 1) { + if (simple->ctls[CTL_CAPTURE_ROUTE].elem || + (simple->ctls[CTL_CAPTURE_SWITCH].elem && +- simple->ctls[CTL_CAPTURE_SWITCH].values > 1)) { ++ simple->ctls[CTL_CAPTURE_SWITCH].values > 1) || ++ (simple->ctls[CTL_CAPTURE_SOURCE].elem && ++ simple->ctls[CTL_CAPTURE_SOURCE].values > 1)) { + caps &= ~SM_CAP_CSWITCH_JOIN; + } + if (simple->ctls[CTL_CAPTURE_VOLUME].elem && -- Stereo line-in capture broken in alsa-lib 1.0.10 for "simple mixer" cards. https://launchpad.net/bugs/62855 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
