ACK: [SRU][R][PATCH 0/1] Fix no audio output and mute hotkey not working on HP ZBook 8 G2a

[Kuan-Ying Lee]

On Tue, Aug 11, 2026 at 06:01:04PM +0800, Chris Chiu via kernel-team wrote:
> From: Chris Chiu <chris.chiu at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/2158858
> 
> [Impact]
> No audio output from the built-in speaker and the speaker and mic mute LEDs never turn on on affected HP systems (SSIDs 0x103c:0x8f94 and 0x103c:0x8f95).
> 
> [Fix]
> Add the ALC245_FIXUP_HP_TAS2781_I2C_MUTE_LED quirk to enable speaker and mic mute LEDs for SSIDs 0x103c:0x8f94 and 0x103c:0x8f95.
> 
> [Test Plan]
> 1. Boot up the affected machine
> 2. Check the audio output by pressing `Test speakers` on the g-d-d sound menu.
> 3. Press the speaker and mic mute keys and verify the following
>    - Speaker muted: LED is on
>    - Speaker not muted: LED is off
>    - Mic muted: LED is on
>    - Mic not muted: LED is off
> 
> [Where problems could occur]
> This change is restricted on particular SSIDs. Should be no risk of regression.
> 
> Chris Chiu (1):
>   ALSA: hda/realtek: Add inverted LED quirk for HP ZBook 8 G2a
> 
>  sound/hda/codecs/realtek/alc269.c | 43 +++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)

Acked-by: Kuan-Ying Lee <kuan-ying.lee at canonical.com>