Chapter 16. Hardware Configuration
16.1.1. Adding Support for a New Tablet
libwacom is a tablet information client library storing data about Wacom models. This library is used by both the
gnome-settings-daemon component and the Wacom Tablet settings panel in GNOME.
To add support for a new tablet into
libwacom, a new tablet definition file must be created. Tablet definition files are included in the libwacom-data package. If this package is installed, the tablet definition files are then locally available in the
To use the screen mapping correctly, support for your tablet must be included in the
libwacom database and
udev rules file.
A common indicator that a device is not supported by
libwacom is that it works normally in a GNOME session, but the device is not correctly mapped to the screen.
Procedure 16.1. How to add tablet descriptions
- Use the
libwacom-list-local-devicestool to list all local devices recognized by
libwacom.If your device is not listed, but it is available as an event device in the kernel (see
/proc/bus/input/devices) and in the X session (see xinput list), the device is missing from
- Create a new tablet definition file. Use data/wacom.example below and edit the respective lines.
NoteThe new .tablet file may already be available, so check the upstream repository first at https://sourceforge.net/p/linuxwacom/libwacom/ci/master/tree/. If you find your tablet model on the list, it is sufficient to copy the file to the local machine.
# Example model file description for a tablet [Device] # The product is the product name announced by the kernel Product=Intuos 4 WL 6x9 # Vendor name of this tablet Vendor=Wacom # DeviceMatch includes the bus (usb, serial), the vendor ID and the actual # product ID DeviceMatch=usb:056a:00bc # Class of the tablet. Valid classes include Intuos3, Intuos4, Graphire, Bamboo, Cintiq Class=Intuos4 # Exact model of the tablet, not including the size. Model=Intuos 4 Wireless # Width in inches, as advertised by the manufacturer Width=9 # Height in inches, as advertised by the manufacturer Height=6 # Optional features that this tablet supports # Some features are dependent on the actual tool used, e.g. not all styli # have an eraser and some styli have additional custom axes (e.g. the # airbrush pen). These features describe those available on the tablet. # # Features not set in a file default to false/0 [Features] # This tablet supports styli (and erasers, if present on the actual stylus) Stylus=true # This tablet supports touch. Touch=false # This tablet has a touch ring (Intuos4 and Cintiq 24HD) Ring=true # This tablet has a second touch ring (Cintiq 24HD) Ring2=false # This tablet has a vertical/horizontal scroll strip VStrip=false HStrip=false # Number of buttons on the tablet Buttons=9 # This tablet is built-in (most serial tablets, Cintiqs) BuiltIn=false
- Add and install the new file with the .tablet suffix:
cp the-new-file.tablet /usr/share/libwacom/Once installed, the tablet is part of
libwacom's database. The tablet is then available through
- Create a new file
/etc/udev/rules/99-libwacom-override.ruleswith the following content so that your settings are not overwritten:
ACTION!="add|change", GOTO="libwacom_end" KERNEL!="event[0-9]*", GOTO="libwacom_end" [new tablet match entries go here] LABEL="libwacom_end"
- Reboot your system.
16.1.2. Where Is the Wacom Tablet Configuration Stored?
Configuration for your Wacom tablet is stored in GSettings in the
/org/gnome/settings-daemon/peripherals/wacom/machine-id-device-id key, where machine-id is a D-Bus machine ID, and device-id is a tablet device ID. The configuration schema for the tablet is
Similarly, stylus configuration is stored in the
/org/gnome/settings-daemon/peripherals/wacom/device-id/tool-id key, where tool-id is the identifier for the stylus used for professional ranges. For the consumer ranges with no support for tool-id, a generic identifier is used instead. The configuration schema for the stylus is
org.gnome.settings-daemon.peripherals.wacom.stylus, and for the eraser
To get the full list of tablet configuration paths used on a particular machine, you can use the
gsd-list-wacom tool, which is provided by the gnome-settings-daemon-devel package.
To verify that the gnome-settings-daemon-devel package is installed on the system, make sure that the system is subscribed to the
Optional channel, and run the following command:
yum install gnome-settings-daemon-devel
To learn how to subscribe the system to the
Optional channel, read the following resource:
After verifying that the package is installed, run the following command:
Note that using machine-id, device-id, and tool-id in configuration paths allows for shared home directories with independent tablet configuration per machine.
16.1.3. When Sharing Home Directories Between Machines, the Wacom Settings Only Apply to One Machine
This is because the D-Bus machine ID (machine-id) for your Wacom tablet is included in the configuration path of the
/org/gnome/settings-daemon/peripherals/wacom/machine-id-device-id GSettings key, which stores your tablet settings.