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zenbook-s14-ux5406sa-linux

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ASUS Zenbook S 14 (UX5406SA)

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# ASUS Zenbook S 14 (UX5406)

## Linux Enablement Overview

TL;DR: Fedora 42 with updates contains all necessary kernel and firmware changes (except sensors). Check package version against Fedora if you prefer another distro.

## CPU

Patch available: https://lore.kernel.org/all/a4aa8842a3c3bfdb7fe9807710eef159cbf0e705.1731463305.git.len.brown@intel.com/ (merged in 6.13-rc2/6.12.5)

### Workaround to intermittent freezes

In case updating or patching the kernel is not an option, disable the ACPI C3 state on a random P-core:

```bash
echo 1 > /sys/devices/system/cpu/cpu0/cpuidle/state3/disable
# or
cpupower -c 0 idle-set -d 3
```

However this may increase idle power consumption. You may want to toggle it back before entering s2idle. ~~(left as an exercise to the reader)~~

## Audio

Install [sof-firmware](https://pkgs.org/search/?q=sof-lnl-cs42l43-l0-cs35l56-l23-2ch.tplg)

If there is no package for your distribution, install manually from [thesofproject/sof-bin](https://github.com/thesofproject/sof-bin)

### Headphone Jack

Works.

### Speakers

The built-in default tunings will downmix stereo to mono for all 4 speakers. Tuning files for this model is available in `linux-firmware`.

### Microphone Array (DMIC)

Tracking in https://github.com/thesofproject/sof/issues/9759

#### Before necessary patches merged in upstream

* Replace `/usr/share/alsa/ucm2/sof-soundwire/cs42l43.conf` with latest version from https://github.com/alsa-project/alsa-ucm-conf/blob/master/ucm2/sof-soundwire/cs42l43.conf
* If you are using kernel before 6.12.20/6.13.8/6.14:
  - use [topology file from this repo](firmware/intel/sof-ipc4-tplg/sof-lnl-cs42l43-l0-cs35l56-l23-2ch.tplg) instead
  - add module parameters override in `/etc/modprobe.d/ux5406-dmic.conf`:
    ```
    # quirk=RT711_JD1|SOC_SDW_PCH_DMIC|SOC_SDW_CODEC_MIC
    # RT711_JD1: default quirk value
    # SOC_SDW_PCH_DMIC: force enumerate DMIC connected to PCH
    # SOC_SDW_CODEC_MIC: don't enumerate DMIC connected to SoundWire CODEC
    options snd_soc_sof_sdw quirk=0x20041
    options snd_sof_pci tplg_filename=sof-lnl-cs42l43-l0-cs35l56-l23-2ch.tplg
    ```
* An [rpm .spec file](zenbook-s14-dmic.spec) is provided for Fedora Atomic desktop users.  
  Build with:
  ```
  rpmbuild -bb zenbook-s14-dmic.spec
  ```
  and install the resulting rpm with:
  ```
  sudo rpm-ostree install --force-replacefiles $HOME/rpmbuild/RPMS/$(uname -m)/zenbook-s14-dmic-*.rpm
  ```

#### Updating from kernels without upstream patches to newer ones with patches

In case you have followed all the steps above, but now you are upgrading to a newer kernel version (see Audio component [in this table](#linux-enablement-overview)), you will most probably encounter an issue where audio stops working entirely - both speakers and microphones.

To resolve this without full system reinstall, you simply need to undo steps [above](#before-necessary-patches-merged-in-upstream), specifically:

* Reinstall `alsa-ucm` (or `alsa-lib` completely if you want), `sof-firmware`, `linux-firmware` to their latest versions. 
  - Example for Fedora: `sudo dnf reinstall alsa-ucm alsa-sof-firmware linux-firmware`.

* Remove the `sof-lnl-cs42l43-l0-cs35l56-l23-2ch.tplg` from `/lib/firmware/intel/sof-ipc4-tplg/`. Make sure that file with the same name but a `.tplg.xz` extension exists.

* Completely remove the `/etc/modprobe.d/ux5406-dmic.conf` file.

* Custom `cs42l43.conf` should be replaced automatically on packages reinstall.

### Dual-boot issues

> [!NOTE]
> The latest Intel audio driver (20.42.11515.0) from Windows Update seems to have this issue fixed.

The SOF firmware will put old Windows drivers to a fu*ky state: only one of every two audio sessions will have sound.

## USB

The USB-A port supports USB 3.0 link power management (LPM), you may encounter issues with buggy devices (e.g. RTL8156).

To workaround, add `usbcore.quirks=vid:pid:k` to kernel command line (like `usbcore.quirks=0bda:8156:k`)

## Sensors

Use [firmware file](firmware/intel/ish/ish_lnlm_ef534c00_fb3b8d86.bin) from this repo. (extracted from SensorHub_DCH_Intel_Z_V5.8.36.0Sub1_42507_20250414204747/IshHeciExtensionTemplate/FWImage/0003/AsusSign_ishS_SI_CommonLNL_5.8.0.7716_v0002.bin)

## GPU

The open-source Intel Vulkan driver `anv` does not sound. Expect log spam and rendering errors in Vulkan applications. (and GTK4 apps)

zenbook-s14-ux5406sa-linux

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