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Bug #619

open

Lenovo T480s headphone jack detection is inconsistent - fix for T480 can be applied.

Added by Oberon 4071 1 day ago. Updated about 17 hours ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
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.

Actions #1

Updated by Oberon 4071 1 day ago

  • Affected versions 25.03 added
  • Affected versions deleted (24.12)
Actions #2

Updated by Oberon 4071 1 day ago

  • Affected versions main added
  • Affected versions deleted (25.03)
Actions #3

Updated by Matt DeVillier 1 day ago

curious - any reason you didn't just apply the change and push the fix yourself?

Actions #5

Updated by Oberon 4071 about 17 hours ago

Thank you. In the future, I will take the appropriate steps to submit a patch if I encounter a similar type of fix.

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