I confirm that the following steps (with a detour learning about sbuild) got my DAC working again.

Thank you again Elimar and Michael!

florin


On 11/10/18 6:01 PM, Michael Stapelberg wrote:
The steps I used to verify the patch were:

% wget 'http://git.alsa-project.org/?p=alsa-plugins.git;a=patch;h=a4e7e1282c57a2f4e83afe9a4008042d8b4c5bb9' -O /tmp/alsa.patch
% pk4 libasound2-plugins
% patch -p1 < /tmp/alsa.patch
% pk4-replace

On Sat, Nov 10, 2018 at 11:51 PM Florin Iucha <flo...@iucha.net <mailto:flo...@iucha.net>> wrote:

    Elimar,


    Seems to be a duplicate. I noticed that Michael was able to test
    the patch from alsa (git). I tried to build pulseaudio and alsa
    from source to debug the issue, but I'm getting to


        libtool: link: gcc -shared  -fPIC -DPIC
        modules/alsa/.libs/libalsa_util_la-alsa-util.o
        modules/alsa/.libs/libalsa_util_la-alsa-ucm.o
        modules/alsa/.libs/libals
        a_util_la-alsa-mixer.o
        modules/alsa/.libs/libalsa_util_la-alsa-sink.o
        modules/alsa/.libs/libalsa_util_la-alsa-source.o
        modules/.libs/libalsa_util_la-reserve-wr
        ap.o modules/.libs/libalsa_util_la-udev-util.o
        modules/.libs/libalsa_util_la-reserve.o
        modules/.libs/libalsa_util_la-reserve-monitor.o
        -Wl,--whole-archive /ho
        me/florin/tools/alsa-lib/src/mixer//.libs/libmixer.a
        /home/florin/tools/alsa-lib/src/control//.libs/libcontrol.a
        -Wl,--no-whole-archive  -Wl,-rpath -Wl,/home/f
        lorin/tools/pulseaudio/src/.libs -Wl,-rpath
        -Wl,/usr/local/lib/pulseaudio ./.libs/libpulsecore-12.2.so
        <http://libpulsecore-12.2.so> ./.libs/libpulsecommon-12.2.so
        <http://libpulsecommon-12.2.so> ./.libs/libpulse.so -L/ho
        me/florin/tools/alsa-lib/src/
        -L/home/florin/tools/alsa-lib/src/mixer/
        -L/home/florin/tools/alsa-lib/src/control/ -ludev -ldbus-1
        -lcap -lpthread -lrt -ldl -lm
          -g -O2   -Wl,-soname -Wl,libalsa-util.so -o
        .libs/libalsa-util.so
        /usr/bin/ld: .libs/libalsa-util.so: version node not found for
        symbol snd_ctl_elem_info_get_dimension@@ALSA_0.9.3
        <mailto:snd_ctl_elem_info_get_dimension@@ALSA_0.9.3>


    How can I test the patch? Do I need to try and re-build the
    package? Can I build alsa and pulseaudio just in some normal
    directories and try it that way?


    Thank you,

    florin


    On 11/10/18 2:01 PM, Elimar Riesebieter wrote:
    Control: reassign -1 libasound2-plugins 1.1.7-2
    Control: forcemerge 912921 -1

    * Florin Iucha<flo...@iucha.net>  <mailto:flo...@iucha.net>  [2018-11-10 
12:12 -0500]:

    Package: libasound2
    Version: 1.1.7-1
    Severity: grave
    Justification: renders package unusable

    Dear Maintainer,

        * What led up to the situation?

        Purchased a new USB DAC. It worked fine last night, then this morning
        it is crashing pulseaudio every time it is attached / turned on.

        * What exactly did you do (or not do) that was effective (or
          ineffective)?

        Plug the USB DAC.

        * What was the outcome of this action?

        Nov 10 12:03:07 herakles kernel: do_general_protection: 10 callbacks 
suppressed
        Nov 10 12:03:07 herakles kernel: traps: pulseaudio[6311] general 
protection ip:7f8f3e557532 sp:7fff1aa8bb20 error:0 in 
libasound.so.2.0.0[7f8f3e51e000+8f000]

        * What outcome did you expect instead?

        Music coming out from the headphones.
    Please checkhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=912921


    Elimar



--
Best regards,
Michael

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