# Lenovo Yoga 14s 2021

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This page is for the Lenovo Yoga 14s 2021 (ITL) laptop equipped with Intel Core i5-1135G7, delivered starting from 2020-11-01 (China).

## Special issues

Most things will work out-of-the-box, or just follow the normal set-up method. However, there are some issues you may want to solve before or during installation.

### Keyboard not functioning properly

The keyboard may not function correctly, esp. normal input will not work. The behaviour includes: 1. keyboard light not switchable; 2. only some functional hotkeys are functioning. The issue may disappear after some time (varies from a few seconds to tens of minutes), or maybe not.

One way to workaround this is to add a kernel parameter during booting:

    i8042.dumbkbd

Note: The light for the capslock key will not work with this method, though capslock is functioning as expected.

### Screen flickering

This is due to Panel Self Refresh (a power saving feature of Intel iGPUs). See Intel graphics#Screen flickering for more information.

The current recommend way is to disable it, by adding with this extra kernel parameter:

    i915.enable_psr=0

### WiFi interface missing

The WiFi interface is missing sometimes after rebooting from Windows, but `rfkill` can still discover it.

It is known that after powering-off and booting again, this will be corrected.

### Audio not working

This laptop requires firmware in order for the soundcard to work. See Advanced Linux Sound Architecture#ALSA firmware.

### Touch screen and pen not working

Update kernel to version >= 5.10.15

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