If I save the ALSA state with the headphones unplugged to a file:
sudo alsactl --file=settings-out.txt store
And then plug in the headphones and restore it:
sudo alsactl --file=settings-out.txt restore
I still get no sound. But then diffing the final state against the
unplugged state did find this:
control.175 {
iface CARD
name 'Headphone Jack'
- value false
+ value true
comment {
access read
type BOOLEAN
count 1
}
}
control.176 {
iface CARD
name 'Headset Mic Jack'
- value false
+ value true
comment {
access read
type BOOLEAN
count 1
}
}
I need to convince ALSA to report/interpret those boolean jack states
the other way around.
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https://bugs.launchpad.net/bugs/1824259
Title:
Headphone jack switch sense is inverted: plugging in headphones
disables headphone output
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https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1824259/+subscriptions
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