Panasonic CF-SV9

Hardware	PCI/USB ID	Working?
Touchpad	PS/2	Yes
GPU	8086:9b41	Yes
Webcam	5986:1164	Yes
Infrared Camera		Yes
Ethernet	8086:0d4f	Yes
Bluetooth	8087:0026	Yes
Card reader	1217:8520	Yes
Audio	8086:02c8	Yes
Wireless	8086:02f0	Yes
Fingerprint reader	06cb:00c6	No
TPM		Yes
Light sensor		Yes

Firmware

System firmware, UEFI firmware, firmware for Thunderbolt controller and touchpad, and SSD firmware can be updated via fwupd.

Touchpad

Circular scrolling

The device has a relatively small round-shape touchpad, so the ability to configure circular scrolling is important for usability (since the touchpad area is too small for gestures). As of 06/27/2020, libinput does not have support for circular scrolling, which means you cannot get circular scrolling in Wayland. Under Xorg, with xf86-input-synaptics installed, circular scrolling works fine with the following configuration section

/etc/X11/xorg.conf.d/70-synaptics.conf

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Option "TapButton1" "1"
        Option "TapButton2" "3"
        Option "TapButton3" "2"
        Option "CircularScrolling" "on"
        Option "CircScrollTrigger" "0"
        Option "CircularPad" "on"
        Option "LeftEdge" "80"
        Option "RightEdge" "450"
        Option "TopEdge" "80"
        Option "BottomEdge" "450"
EndSection

After saving the file, restart Xorg.

Fix touchpad delays after system wake from sleep

Touchpad starts to behave badly and introduce pointer moving delays after system wake up from sleep. To address the issue, i2c_hid kernel module must be unloaded and loaded back again. The following script does the job:

/lib/systemd/system-sleep/fix-touchpad.sh

#!/bin/sh

if [ "$1" = 'post' ]; then
    echo "Reloading i2c_hid module to fix touchpad behavior"
    modprobe -r i2c_hid && modprobe i2c_hid
fi

Audio

Requires ALSA firmware to fully function.

Fingerprint reader

Synaptics FS7600

Function keys

Keys F1-F6 & F11-F12 work out of the box. Keys F7-F10 do not work and do not produce any key codes. According to drivers/platform/x86/panasonic-laptop.c, these buttons are supposed to perform the following functions:

{ KE_KEY, 7, { KEY_SLEEP } },
{ KE_KEY, 8, { KEY_PROG1 } }, /* Change CPU boost */
{ KE_KEY, 9, { KEY_BATTERY } },
{ KE_KEY, 10, { KEY_SUSPEND } },