# Lenovo Yoga 7i

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Hardware | PCI/USB ID | Working?
--- | --- | ---
Wifi | `8086:a0f0` | Yes
Bluetooth | `8087:0026` | Yes
Speakers | `8086:a0c8` | Yes
Microphone |  | Yes
Webcam | `5986:212a` | Yes
Keyboard |  | Yes
Touchpad |  | Yes
Touchscreen |  | Yes
Active pen |  | Yes
Fingerprint reader | `27c6:55b4` | No

## Installation

After completing the installation process, the boot partition is not found because NVMe support for Intel's Volume Management Device is not present by default. It is therefore necessary to add `vmd` to the MODULES section section in `/etc/mkinitcpio.conf` before regenerating the initramfs, see also [1].

## Accessibility

The speakers do not work out of the box (see below), so in particular speech-aided installation is not possible.

## Power management

In order to support "Windows Modern Standby", the BIOS does not advertise S3 sleep (suspend to RAM), as discussed in detail in this forum post.

### Activating S3 sleep

Follow Lenovo ThinkPad X1 Yoga (Gen 3)#Manual method to patch the DSDT table, but use the following patch instead:

    --- dsdt.dsl
    +++ dsdt.dsl
    @@ -18,7 +18,7 @@
      *     Compiler ID      "INTL"
      *     Compiler Version 0x20210105 (539033861)
      */
    -DefinitionBlock ("", "DSDT", 2, "LENOVO", "CB-01   ", 0x00000002)
    +DefinitionBlock ("", "DSDT", 2, "LENOVO", "CB-01   ", 0x00000003)
     {
         External (_GPE.AL6F, MethodObj)    // 0 Arguments
         External (_GPE.P0L6, MethodObj)    // 0 Arguments
    @@ -516,7 +516,7 @@

         Name (SS1, Zero)
         Name (SS2, Zero)
    -    Name (SS3, Zero)
    +    Name (SS3, One)
         Name (SS4, One)
         OperationRegion (GNVS, SystemMemory, 0x45AB8018, 0x0A9B)
         Field (GNVS, AnyAcc, Lock, Preserve)

### Battery conservation mode

See Lenovo#Battery Conservation Mode on IdeaPad laptops.

## Function keys

Key | Visible?1 | Marked?2 | Effect
--- | --- | --- | ---
`Fn+Esc` | No | Yes | Enables Fn lock
`F1` | Yes | Yes | `XF86AudioMute`
`F2` | Yes | Yes | `XF86AudioLowerVolume`
`F3` | Yes | Yes | `XF86AudioRaiseVolume`
`F4` | Yes | Yes | `XF86AudioMicMute`
`F5` | Yes | Yes | `XF86MonBrightnessDown`, see below
`F6` | Yes | Yes | `XF86MonBrightnessUp`, see below
`F7` | Yes | Yes | `Super+p`
`F8` | Yes3 | Yes | `XF86RFKill`, toggles soft-block wifi and bluetooth
`F9` | Yes | Yes | `Super+i`
`F10` | Yes | Yes | `Super+l`
`F11` | Yes | Yes | `Ctrl+Alt+Tab`
`F12` | Yes | Yes | `XF86Calculator`
`Ins` | No | Yes | Opens Lenovo Vantage on Windows, not usable on Linux
`Print` | Yes | Yes | `Mod+Shift+s`
`Fn+Space` | No | Yes | Change keyboard backlight level

1. The key is visible to `xev` and similar tools
2. The physical key has a symbol on it, which describes its function
3. systemd-logind handles this by default

### Brightness keys

The brightness hotkeys only emit signals after resuming from suspend-to-RAM or hibernation, but not after (re)booting. This is because they depend on initialization by an ACPI method which is called when resuming from a sleep state but not on boot.

## Speaker audio

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

Due to this bug, the speakers do not work without modification. They do however work after suspending to RAM if audio playback is started within a short period of time of resuming (about 7 seconds), but they stop working if playback is interrupted for longer than this period of time. This allows for a hackish solution:

1. Make sure to activate S3 sleep.

2. Create a shell script to briefly suspend and then keep playing silent audio in the background to keep the speakers alive, for example:

    activate_audio

    #!/bin/bash
    sudo rtcwake -m mem -s 1
    while true
    do
      echo -n -e '\x00' | padsp tee /dev/audio
      sleep 5
    done

3. Bind this script to a key, or execute it automatically after logging in.

## Fingerprint reader

The currently available fingerprint reader drivers for Linux do not support this model and because this is not one of Lenovo's Linux-certified machines, Lenovo will not provide Linux support for this device, either.

Category:

- Lenovo