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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - LFE channel not synthesized properly"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95021#c20">Comment # 20</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - LFE channel not synthesized properly"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95021">bug 95021</a>
from <span class="vcard"><a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> <span class="fn">Raymond</span></a>
</span></b>
<pre>
<a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=ee81abb623cb5e03c182d16871bb4fb34fdc9b4f">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=ee81abb623cb5e03c182d16871bb4fb34fdc9b4f</a>
how do 2.1 work since the driver expect LFE in last two channels , (e.g. asus
notenbook external subwoofer only use the right channels but acer laptop use
left channel )
+const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[] = {
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
+ { .channels = 4,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_LFE, SNDRV_CHMAP_LFE } },
+ { }</pre>
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