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# Lenovo ThinkPad E15 Gen 4 (Intel)

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

Reason: Missing an accessibility section. (Discuss in Talk:Lenovo ThinkPad E15 Gen 4 (Intel))

## Installation

Secure Boot is enabled by default in the latest Lenovo laptops. Thus, Secure Boot has to be disabled first if you want to install Arch Linux on this laptop, since the "Microsoft 3rd Party UEFI Certificate" is not included in the Arch Linux installer.

## Function keys

Special Key | Visible?1 | Marked?2 | Effect
--- | --- | --- | ---
`Fn` | Yes | Yes | `XF86WakeUp`
`Fn+F1` | Yes | Yes | `XF86AudioMute`
`Fn+F2` | Yes | Yes | `XF86AudioLowerVolume`
`Fn+F3` | Yes | Yes | `XF86AudioRaiseVolume`
`Fn+F4` | Yes | Yes | `XF86AudioMicMute`
`Fn+F5` | Yes | Yes | `XF86MonBrightnessDown`
`Fn+F6` | Yes | Yes | `XF86MonBrightnessUp`
`Fn+F7` | Yes | Yes | `XF86Display`
`Fn+F8` | Yes | Yes | `XF86WLAN`
`Fn+F9` | Yes | Yes | `XF86Messenger`
`Fn+F10` | Yes | Yes | `XF86PickupPhone`
`Fn+F11` | Yes | Yes | `XF86HangupPhone`
`Fn+F12` | Yes | Yes | `XF86Favorites`
`Fn+Space` | No | Yes | Cycle Keyboard Backlight
`Fn+Escape` | No | Yes | Function Lock

1. The key is visible to `xev` and similar tools
2. The physical key has a symbol on it, which describes its function

## General support

Check Laptop/Lenovo.

## Firmware

There is an update issue with fwupd.

## Audio

Install sof-firmware to make the built-in speakers work.

## Power management

### Sleep

The trackpoint and trackpad will stop working after suspend. To fix this issue, change the "Sleep State" option in the BIOS to "Windows and Linux" (instead of "Linux").

### Battery control

When controlling the start and stop charging threshold using TLP or `/sys/class/power_supply/BAT0/charge_control_start_threshold` and `/sys/class/power_supply/BAT0/charge_control_end_threshold`, setting the start_threshold to a value other than 0 will result in the battery not charging anymore.

## Fingerprint reader

The fingerprint reader is supported using libfprint-2-tod1-goodixAUR, although the Ubuntu Certified page says it is not.

Category:

- Lenovo

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