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

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

Note: This section is outdated with linux 5.14.14, because the patch is now included in the mainline kernel and sound should work out of the box. Only if you cannot update yet, these information may still be relevant to you.

Due to this bug, the speakers do not work without modification, but there is already a patch available. To apply the patch a tool called hda-verb is required. This laptop also requires additional firmware in order for the sound card to work.

Install the alsa-firmware, sof-firmware, alsa-ucm-conf and alsa-tools packages and reboot to activate the firmware.

Save the following script and execute it with root privileges (e.g. sudo activate_audio.bsh) to activate the speakers:

fix_audio.bsh

#!/usr/bin/bash
while read l ; do hda-verb /dev/snd/hwC0D0 $l ; done <<END
0x20 0x500 0x24
0x20 0x400 0x41
0x20 0x500 0x26
0x20 0x400 0x2
0x20 0x400 0x0
0x20 0x400 0x0
0x20 0x4b0 0x20
0x20 0x500 0x24
0x20 0x400 0x46
0x20 0x500 0x26
0x20 0x400 0xc
0x20 0x400 0x0
0x20 0x400 0x2a
0x20 0x4b0 0x20
0x20 0x500 0x26
0x20 0x400 0x2
0x20 0x400 0x0
0x20 0x400 0x0
0x20 0x4b0 0x20
END

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.