After I add the ppa:diwic/hda, install the hda-jack-retask and snd-hda-
tools, I tried to run the command in the terminal:
hda-jack-sense-test -a
I got this result from terminal:
Traceback (most recent call last):
File "/usr/bin/hda-jack-sense-test", line 47, in <module>
codec = HDACodec(cardindex, codecindex)
File "/usr/share/snd-hda-tools/hda_codec.py", line 1023, in __init__
self.fd = os.open("/dev/snd/hwC%sD%s" % (card, device), os.O_RDWR)
OSError: [Errno 13] Permission denied: '/dev/snd/hwC0D0'
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https://bugs.launchpad.net/bugs/1252212
Title:
[MS-7697, Realtek ALC887-VD, Green Line Out, Rear] Background noise or
low volume
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