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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Lack of hardware volume no longer supported with HifimeDIY Tiny"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99607#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Lack of hardware volume no longer supported with HifimeDIY Tiny"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99607">bug 99607</a>
from <span class="vcard"><a class="email" href="mailto:tanuk@iki.fi" title="Tanu Kaskinen <tanuk@iki.fi>"> <span class="fn">Tanu Kaskinen</span></a>
</span></b>
<pre>If the card presents a volume element that doesn't do anything, that's a kernel
driver bug, and should be reported to the alsa developers:
<a href="http://alsa-project.org/main/index.php/Bug_Tracking">http://alsa-project.org/main/index.php/Bug_Tracking</a>
There's currently no simple way to disable hardware volume. One way to do it is
to set the card profile to "off" and then load module-alsa-sink. When you set
the card profile to "off", the module-alsa-card instance that was loaded
automatically by module-udev-detect will not try to use the device, so it won't
conflict with the module-alsa-sink instance that you load manually.
module-alsa-sink doesn't use hardware volume unless you explicitly tell it to.
Here's the command to set the profile to "off" (you can also do this with
pavucontrol):
pactl set-card-profile alsa_card.usb-Burr-Brown_from_TI_USB_Audio_DAC-00 off
Here's the command to load module-alsa-sink:
pactl load-module module-alsa-sink device=hw:2
("hw:2" assumes that the alsa card index is 2.)
The set-card-profile command needs to be given only once. The load-module
command needs to be given every time you boot or plug in the sound card. If the
sound card is always plugged in, you can put the load-module command in
/etc/pulse/default.pa.
Btw, attachments are nicer for big dumps of information, because if they're in
the message body, reading the bug discussion requires a lot of scrolling.</pre>
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