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# Lenovo Yoga Pro 7 14AHP9

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This article or section does not follow the Laptop page guidelines.

Reason: Missing an Accessibility and "Function keys" section. (Discuss in Talk:Lenovo Yoga Pro 7 14AHP9)

Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad |  | Yes
Keyboard |  | Yes
GPU | `1002:1900` | Yes
Webcam | `174f:1820` | Yes
Bluetooth | `0489:e0d8` | Yes
Audio | `1002:1640` | Yes*
Wireless | `14c3:0616` | Yes
TPM |  | Untested

## Firmware

This article or section needs expansion.

Reason: Should explain which firmware fwupd can handle on this laptop. (Discuss in Talk:Lenovo Yoga Pro 7 14AHP9)

CPPC is enabled in UEFI in the latest BIOS update, otherwise the kernel falls back to the legacy `acpi_cpufreq` driver for CPU frequency scaling. This is resolved in Linux 6.12. [1]

Battery charge threshold is supported.

## Audio

### Headphones

There is an issue with using headphones through the 3.5mm jack when using PipeWire. When headphones are connected, little to no sound may be audible. To resolve this, adjust the `Bass Speaker` volume to 100% using `amixer` when the headphones are plugged in. After that, the regular volume control in PipeWire will function as expected.

    amixer -c 1 sset 'Bass Speaker' 100%

The `Bass Speaker` volume must be adjusted every time headphones are connected.

Note: The `amixer` command is provided by the alsa-utils package.

### Laptop Built-in Speakers

Another issue with sound on Lenovo Yoga Pro models (specifically on `14IMH9` and `14AHP9` and `14IAP7`) is sound card pin mixup. It manifests as follows: changing volume does not seem to have any effect, but when setting it to 0% volume does actually turn off. To fix volume control you need to create `/etc/modprobe.d/mysound.conf` with row below and reboot:

    options snd_sof_intel_hda_generic hda_model=alc287-yoga9-bass-spk-pin

The quirk is know in linux kernel, e.g. see the constant `ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN` in kernel realtek patches

Supposedly its been fixed with kernel patch but I needed the manual modprobe option.

## See also

- Specifications: https://psref.lenovo.com/syspool/Sys/PDF/Yoga/Yoga_Pro_7_14AHP9/Yoga_Pro_7_14AHP9_Spec.pdf
- Documentation: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/yoga-series/yoga-pro-7-14ahp9/document-userguide/doc_userguide

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- Lenovo

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