So, if you want automatic LFE remixing, that should be possible through PulseAudio:
First, add a new profile for 2.1 by adding this section to /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf:
[Mapping analog-surround-21]
# Note that the line below should NOT be changed to surround21.
device-strings = surround40:%f
channel-map = front-left,front-right,lfe,lfe
paths-output = analog-output analog-output-speaker
priority = 7
direction = output
Second, make sure this line is present in /etc/pulse/daemon.conf:
enable-lfe-remixing = yes
Then restart pulseaudio (run "pulseaudio -k" in a terminal), then select the new profile in the sound settings.
I haven't used LFE remixing myself, so not sure how well it works, but worth a try :-)
So, if you want automatic LFE remixing, that should be possible through PulseAudio:
First, add a new profile for 2.1 by adding this section to /usr/share/ pulseaudio/ alsa-mixer/ profile- sets/default. conf:
[Mapping analog-surround-21] front-right, lfe,lfe output- speaker
# Note that the line below should NOT be changed to surround21.
device-strings = surround40:%f
channel-map = front-left,
paths-output = analog-output analog-
priority = 7
direction = output
Second, make sure this line is present in /etc/pulse/ daemon. conf:
enable-lfe-remixing = yes
Then restart pulseaudio (run "pulseaudio -k" in a terminal), then select the new profile in the sound settings.
I haven't used LFE remixing myself, so not sure how well it works, but worth a try :-)