Toshiba Portege Z20t

The power of an enterprise-class laptop. The freedom and convenience of a tablet. Why choose when you can get the best of both? The Toshiba Portégé® Z20t Ultrabook® offers innovative 2-in-1 versatility in a supremely crafted chassis, along with outstanding battery life and an exceptional handwriting experience.

Specifications

Name	Series Toshiba Portege Z20t
Processor	Intel Core M-5Y71
Screen	12.5" Touchscreen
RAM	4-8-16GB
HDD	Toshiba SDD (256 [MZNTE256HMHP], 256, 512 GB)
Optical Drive	none
Graphics	Intel® HD Graphics 5300 (Broadwell GT2)
Network	Ethernet - Intel I218-LM, Wifi - Intel Wireless 7265
Touchpad	ALPS (Trackstick+Mousepad)
Fingerprint reader	none
Smart Card Reader	Realtec (Micro SD card reader)
Webcam	Toshiba Web Camera (Front and Back)

Installation and configuration

CPU & Graphics

Works fine after installation, the video have some issues with lightdm locker when locking the session or after resume, if that's the case the configuration recommended for Intel works Intel Arch^{[broken link: invalid section]}
Touchscreen works fine tested in gnome.

Touchpad

It Works without any modification including gestures.

Bluetooth

Works

Wifi

Works

LTE/3G

Works in some situations. Some providers might not connect with the default configuration.

The built-in Sierra EM7305 is operating in mbim-mode, which is the default configuration on Windows 8/10 Systems. mbim is still not well supported in Linux. Switching to QMI-Mode can solve some problems. Source

99-em7305.rules

ACTION!="add|change", GOTO="mbim_to_qmi_rules_end"
SUBSYSTEM!="usb|drivers", GOTO="mbim_to_qmi_rules_end"

# force Sierra EM7305 to configuration #1
SUBSYSTEM=="usb", \
        ATTR{idVendor}=="1199", ATTR{idProduct}=="9063", \
        ATTR{bConfigurationValue}="1"

# load qcserial module
SUBSYSTEM=="usb", \
        ATTR{idVendor}=="1199", ATTR{idProduct}=="9063", \
        RUN+="/sbin/modprobe -b qcserial"

# add the new id in the qcserial driver
SUBSYSTEM=="drivers", \
        ENV{DEVPATH}=="/bus/usb-serial/drivers/qcserial", \
        ATTR{new_id}="1199 9063"

# load qmi_wwan module
SUBSYSTEM=="usb", \
        ATTR{idVendor}=="1199", ATTR{idProduct}=="9063", \
        RUN+="/sbin/modprobe -b qmi_wwan"


# add the new id in the qmi_wwan driver
SUBSYSTEM=="drivers", \
        ENV{DEVPATH}=="/bus/usb/drivers/qmi_wwan", \
        ATTR{new_id}="1199 9063"

LABEL="mbim_to_qmi_rules_end"

Smart Card Reader

Works fine, it is a mini SD card reader not a regular SD Card.

Display Backlight Control

It works out of the box, even after resume, no additional package has been installed

Keyboard Backlight control

Works

For instructions on Keyboard backlight toggle see Toshiba Portege Z30-A#Installation and configuration.

Since changing sys values requires root, one can either write a wrapper for bash scripts for setuid, which is generally considered insecure. Here is a simple toggle switch: KbdBacklightToggle in C

Fn-F9 Touchpad Toggle

Needs custom hwdb to work. See Extra keyboard keys. Example hwdb provided here, but you might want to choose a different keycode: HWDB Config