Public bug reported:
Laptop: Lenovo ThinkPad E16 Gen 3
CPU: Intel Core Ultra 5 225H (Meteor Lake)
Codec: Conexant SN6140
Subsystem ID: 17aa:5135
OS: Ubuntu 24.04.4 LTS
Kernel: 6.17.0-19-generic
Issue:
- Internal speakers: right speaker works, left speaker has no sound
- Headphones: both channels work correctly
- speaker-test outputs both channels, but left speaker produces no sound
- Plugging/unplugging headphones affects speaker behavior
Audio stack:
- Driver: sof-audio-pci-intel-mtl
- Machine driver: skl_hda_dsp_generic
- Topology: sof-hda-generic-2ch.tplg
Observation:
System appears to use generic SOF topology instead of model-specific
configuration.
Likely incorrect speaker routing or amplifier initialization.
This issue matches known SN6140 problems on ThinkPad E16 Gen 3.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2145861
Title:
ThinkPad E16 Gen 3 (SN6140) left speaker not working on Ubuntu 24.04
(SOF)
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