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Bug #619
openLenovo T480s headphone jack detection is inconsistent - fix for T480 can be applied.
Start date:
12/09/2025
Due date:
% Done:
0%
Estimated time:
Affected versions:
Needs backport to:
Affected hardware:
Lenovo T480s
Affected OS:
Linux
Description
The headphone jack detection on the Lenovo T480s is inconsistent, where at least in the GNOME desktop, the audio doesn't always automatically switch to the headphone jack.
There was a recent fix for this issue on the T480 with Gerrit Change 90023 .
On my own coreboot builds, I applied the same changes from this Gerrit commit from the file src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/hda_verb.c to the file src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/hda_verb.c, and the headphone jack is now working properly on my laptop. It would be great to integrate this change for the T480s into the mainline coreboot sources.
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