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. However, some graphical issues may arise with LightDM when locking the session or resuming from suspend. If so, see Intel graphics#Xorg configuration.
Touchscreen works fine in GNOME.
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"
Keyboard backlight
For instructions on Keyboard backlight toggle see Toshiba Portege Z30-A#Keyboard Backlight control.
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