Public bug reported:
These laptops all have the codec of alc285.
reproduced by:
1. Hookup a set of headphones that you can separately place
in/on your ears. (ie. ear buds)
2. Put only the right headphone in/on your ear.
3. Go to the Gnome sound settings and bring up the "Test
Speakers" function
4. Play the left speaker test
You would expect to hear nothing in the right ear, but instead
you hear a "pop" at the start of each word spoken. ("pop"
Front "pop" left). You can repeat with the left headphone and
see similar results. I even tried shifting the balance all the
way to the left/right and get the same results.
So one problem appears to be when the headphone jack is
initially sent audio, it causes a "pop" in the headphone jack.
** Affects: linux (Ubuntu)
Importance: Critical
Assignee: Hui Wang (hui.wang)
Status: New
** Changed in: linux (Ubuntu)
Importance: Undecided => Critical
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https://bugs.launchpad.net/bugs/1805079
Title:
click/pop noise in the headphone on several lenovo laptops
Status in linux package in Ubuntu:
New
Bug description:
These laptops all have the codec of alc285.
reproduced by:
1. Hookup a set of headphones that you can separately place
in/on your ears. (ie. ear buds)
2. Put only the right headphone in/on your ear.
3. Go to the Gnome sound settings and bring up the "Test
Speakers" function
4. Play the left speaker test
You would expect to hear nothing in the right ear, but instead
you hear a "pop" at the start of each word spoken. ("pop"
Front "pop" left). You can repeat with the left headphone and
see similar results. I even tried shifting the balance all the
way to the left/right and get the same results.
So one problem appears to be when the headphone jack is
initially sent audio, it causes a "pop" in the headphone jack.
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