[SRU][I/H/F][PATCH v2 0/2] Fix speaker issues for a couple of Lenovo laptops

Hui Wang hui.wang at canonical.com
Wed Oct 13 03:50:19 UTC 2021

BugLink: https://bugs.launchpad.net/bugs/1939052

In the V2, added one more patch to fix the 1st patch.

The speaker on a coule of Lenovo laptops can't output sound, need
to do special initialization.

Backport a upstream patch, the patch will initialize the speaker
amplifier with special verbs.

Booting the patched kernel, output the sound to speaker, could
heaer the sound.

[Where problems could occur]
The patch set the quirk to some lenovo machines with subsystem id,
there is no regression risk for other machines.

Cameron Berkenpas (2):
  ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion
    7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops.
  ALSA: hda/realtek: Fix for quirk to enable speaker output on the
    Lenovo 13s Gen2

 sound/pci/hda/patch_realtek.c | 129 ++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)


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