[pulseaudio-tickets] [Bug 95021] LFE channel not synthesized properly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95021

--- Comment #20 from Raymond <superquad.vortex2 at gmail.com> ---



https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=ee81abb623cb5e03c182d16871bb4fb34fdc9b4f

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 } },
+       { }

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