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I have a laptop with a Maestro 2E. The out of the box setup works but
there is a remaining issue. All playback has the right and left
channels swapped. I checked the outputs of mixerctl -a and audioctl -a
and was unable to find a variable to correct this. I was also unable to
find a flag for the maestro driver or audio driver to toggle the swap.
Is there either a flag I missed or a simple (non hardware) way to
resolve this?



------- dmesg section
maestro0 at pci0 dev 8 function 0 "ESS Maestro 2E" rev 0x10: irq 5
ac97: codec id 0x83847609 (SigmaTel STAC9721/23)
ac97: codec features 18 bit DAC, 18 bit ADC, SigmaTel 3D
audio0 at maestro0



------ audioctl -a
name=ESS Maestro
version=
config=maestro
encodings=slinear_le:16,slinear:8,ulinear:8,slinea r_be:16*,ulinear_le:16*,ulinear_be:16*,mulaw:8*,al aw:8*
properties=mmap,independent
full_duplex=0
fullduplex=0
blocksize=8816
hiwat=7
lowat=5
monitor_gain=0
mode=playsync
play.rate=44099
play.channels=2
play.precision=16
play.encoding=slinear_le
play.gain=127
play.balance=32
play.port=0x0
play.avail_ports=0x0
play.seek=47984
play.samples=135760512
play.eof=0
play.pause=0
play.error=1
play.waiting=0
play.open=1
play.active=1
play.buffer_size=65536
record.rate=8000
record.channels=1
record.precision=8
record.encoding=mulaw
record.gain=191
record.balance=32
record.port=0x1
record.avail_ports=0x7
record.seek=0
record.samples=0
record.eof=0
record.pause=0
record.error=0
record.waiting=0
record.open=0
record.active=0
record.buffer_size=65536
record.errors=0



---------mixerctl -aoutputs.master=47,47
outputs.master.mute=off
outputs.mono=255
outputs.mono.mute=on
outputs.mono.source=mixerout
outputs.headphones=255,255
outputs.headphones.mute=on
outputs.bass=255
outputs.treble=255
inputs.speaker=255
inputs.speaker.mute=off
inputs.phone=191
inputs.phone.mute=on
inputs.mic=191
inputs.mic.mute=on
inputs.mic.preamp=on
inputs.mic.source=mic0
inputs.line=191,191
inputs.line.mute=on
inputs.cd=191,191
inputs.cd.mute=on
inputs.video=191,191
inputs.video.mute=on
inputs.aux=191,191
inputs.aux.mute=on
inputs.dac=191,191
inputs.dac.mute=off
record.source=mic
record.volume=255,255
record.volume.mute=off
record.mic=0
record.mic.mute=off
outputs.loudness=off
outputs.spatial=off
outputs.spatial.center=0
outputs.spatial.depth=0
outputs.surround=255,255
outputs.surround.mute=off
outputs.center=255
outputs.center.mute=off
outputs.lfe=255
outputs.lfe.mute=off