Lenovo ThinkPad Z16 Gen 2

Hardware	PCI/USB ID	Working?
Haptic Touchpad	`2C2F:0027`	Partial
TrackPoint		Yes
TouchScreen	`056A:5383`	Yes
Stylus	`056A:5383`	Untested
GPU	`1002:15bf`	Yes
Webcam	`04f2:b78b`	Yes
IR camera	`04f2:b78c`	Untested
Audio	`1022:15e3`	Yes
Wireless	`14c3:0616`	Yes
Bluetooth	`0489:e0d9`	Yes
Fingerprint reader	`06cb:0123`	Untested
USB4		Yes
TPM		Untested

Accessibility

The BIOS only offers GUI operation, and can be navigated to some degree via the keyboard.

Note: Blind users may want to request the help of a sighted person to change BIOS settings

Haptic Touchpad

The device uses a I2C HID Sensel haptic touchpad, with configurable force requirements and haptic feedback.

Initialization failure

On Linux kernel 6.8 up to 6.9-rc2, the I2C HID device sometimes fails to initialize. This problem is not seen when using linux-lts. See https://bugzilla.redhat.com/show_bug.cgi?id=2271136.

When not initialized, the emulated TrackPoint buttons will work but have a sluggish response, while the rest of the touchpad area will be unresponsive.

I2C HID devices can be re-initialized by unloading and reloading the kernel module:

rmmod i2c_hid_acpi
modprobe i2c_hid_acpi

This must sometimes be done more than once. As a temporary workaround until the issue is resolved, the following script and service can retry the module until the touchpad becomes available:

/usr/local/bin/snsl-touchpad-fix

#!/bin/sh -e
cnt=0
while true
do
	libinput list-devices | grep SNSL && break

	if [ $cnt -gt 5 ]
	then
		echo "Touchpad not ready after $cnt attempts"
		break
	fi

	echo "Touchpad not ready, attempt $cnt to reload"
	rmmod i2c_hid_acpi
	modprobe i2c_hid_acpi
	sleep 2
done

/etc/systemd/system/touchpad-fix.service

[Unit]
Description=Touchpad fix

[Service]
Type=oneshot
ExecStart=/usr/local/bin/snsl-touchpad-fix

[Install]
WantedBy=multi-user.target

Then enable touchpad-fix.service.

Sensitivity and Haptic intensity

The haptic intensity can be set using hid-tools at runtime. Configuration options can be listed as follows after installing the package:

# hid-feature list /dev/hidraw0

To set maximum haptics:

 # hid-feature set /dev/hidraw0 -f b0000 100

Configuration for click sensitivity has not yet been identified,

The device reverts to default settings after reboot, which feels like a high sensitivity requiring only light press and a medium or low haptic intensity.

Webcam

Works out of the box. However, web applications have a tendency to pick the IR camera first, which will fail and require changing the camera selection.

GPU

The integrated GPU is seeing very active support from AMD. The iGPU is shared with certain Framework models, with AMD actively engaging with their forums.

The dedicated GPU is an older RDNA2 chip. All displays connect to the iGPU.

GPU glitches

Before kernel 6.8, an issue with VRAM management lead to occasional graphical glitches when the iGPU was running out of VRAM. The issue is described here: https://gitlab.freedesktop.org/drm/amd/-/issues/3097

GPU Resets

The GPU currently has a tendency to reset under certain applications, Chrome and Electron in particular. Handling this gracefully requires a display server that correctly handles GPU resets.

In case of Sway, this currently requires running the master branch through sway-git^AUR.

Display brightness (OLED)

The brightness for the OLED panel uses the amdgpu's "aux" controls. The brightness slowly animates to the selected value. The scale appears very non-linear, with 30% under Linux more or less matching 75% under Windows.

Whenever the display is re-enabled (e.g., due to closing the lid), it does so at a a default brightness value despite the kernel still reporting the previously set value.

USB4/Thunderbolt

When connected to a Thunderbolt 3 dock during boot, USB has a tendency to stop working after boot completes, despite USB being functional for e.g., cryptsetup prompts earlier.

Disconnecting the cable and plugging it back in fixes it as a workaround.

Function keys

Ctrl is placed to the left of Fn, which differs from the normal ThinkPad placement where Fn is on the left. The buttons are the same size, and can be swapped in the firmware as usual.

Key	Visible?¹	Marked?²	Effect
`Fn`	Yes	No	`XF86WakeUp`
`Fn+Esc`	No	Yes	Enables Fn lock
`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`³
`Fn+F9`	No	Yes	Toggle Webcam
`Fn+F10`	Yes	Yes	`XF86Go`
`Fn+F11`	Yes	Yes	`Cancel`
`Fn+F12`	Yes	Yes	`XF86Favorites`
`Fn+Space`	No	Yes	Cycle keyboard backlight
`Fn+Tab`	Yes	No	`XF86FullScreen`
`Fn+PrtSc`	Yes	No	`XF86Launch2`
`Fn+Shift_R`	Yes	No	`XF86Launch3`
`Fn+4`	Yes	No	`XF86Sleep`³
`Fn+B`	Yes	No	`Ctrl_L + Break`
`Fn+P`	Yes	No	`Pause`
`Fn+K`	Yes	No	`Scroll Lock`
`Fn+Left`	Yes	No	`Home`
`Fn+Right`	Yes	No	`End`
`Fn+Up`	Yes	Yes	`Prior`
`Fn+Down`	Yes	Yes	`Next`
`Fn+S`	Yes	No	`Alt_L + Sys_Req`
`Fn+End`	Yes	Yes	`Ins`
`Fn+Shift_L+S`	Yes	No	`Meta_L`

The key is visible via wev and similar tools
The physical key has a symbol on it, which describes its function
systemd-logind handles this by default