Description of problem:
With recent updates, headphone audio support broke on Dell Inspiron 7510
laptop hardware. Audio playback can be started and is heard playing through
the integrated speakers. When a headphone jack is plugged in (may be
an actual headphone or line-in cable), no audio is heard. Instead,
pop and click-noises are heard that suggest some DC voltage is present
on the line. Changes of headphone volume or other settings do not
change the behaviour.
There is no defect in the headphone audio hardware itself, as has been
verfied by starting from an installer live-image and playing test
sound from the KDE settings dialog.
Version-Release number of selected component (if applicable):
F29, kernel 4.19.8-300, alsa 1.1.7-2, other components updated
as of 2018-12-14.
Consistently appears each time a headphone is plugged in.
Steps to Reproduce:
1. Start audio player.
2. Plug in headphones or line cable.
pop and click noises as audio playback start/stops.
reproduce the audio signals played on headphones/line-out
I have investigated the issue further and found that
it appears only in combination with nvidia proprietary
driver rev. 415.22 installed.
uninstall NVIDIA driver or downgrade to rev. 415.18.
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle.
Changing version to '31'.