What is this?

These is a system service to enhance the compatibility of the Logitech Trackball Marble, Logitech MX Anywhere 2S, and other devices I may have with the Linux OS. It contains scripts that start during system boot and map the device inputs into special commands, like Back, Forward, Scrolling, Alt+Tab, macros, and so on. If a device is not present/detected it simply ignores the enhancements. It is also aware of the current focused window. For instance, "Switch Tabs" will map to different shortcuts deppending on your app.

Usage

Logitech Trackball Marble

Normal Mode

Shortcut	Action
A	Left Click
B	Go to Declaration / Open in new Tab
C	Right Click
D	Middle Click
E	Move Cursor

Holding B

Shortcut	Action
B + A	Show All Windows
B + C	Back
B + D	Forward
B + E	Vertical and Horizontal Scrolling

Holding C

Shortcut	Action
C + A	Search Selection
C + B	Reopen Tab
C + D	New Tab or Document
C + E	Change Volume (Vertical) or Undo / Redo (Horizontal)

Holding D

Shortcut	Action
D + A	Close Tab or Terminal
D + B	Close Window
D + C	Advanced Search: Tabs, Files, Content, Symbols, so on
D + E	Switch Tabs (Vertical) or Switch Windows (Horizontal)

Macro Keyboard

Shortcut	Action
REC + MACRO_N	Start recording / reset recording keyboard input sequence in buffer N (activates blue led)
MACRO_N (blue led on)	Finish recording the macro (deactivates led)
MACRO_N (blue led off)	Play the recorded sequence of keys
TOGGLE_N	Toggle macro MACRO_N between two sets, MACRO_1 to MACRO_6 (left) or MACRO_7 to MACRO_12 (right)
Yellow led	Indicates a key is being pressed

XPPEN Deco Pro

Key	Mode	Can draw?	Show drawing	Background
A	Transparent	Yes	Yes	None
B	Opaque	Yes	Yes	Opaque
C	Passthrough	No	Yes	None
D	Disabled	No	No	None

Transparent/Opaque/Passthrough Modes

Key	Action
E	Previous page
F	Next page
G	Undo
H	Redo
I	Change brush size
J	Move paper
K	Touch the tablet to draw
L	Eraser mode
M	Open Menu (Planned)

Disabled Mode

Key	Action
E	Planning
F	Planning
G	Planning
H	Planning
I	Planning
J	Planning
K	Left mouse click
L	Middle mouse click
M	Right mouse click

Nulea M512

Normal Mode

Shortcut	Action
A	Middle Click
C	Right Click
D	Left Click
E	Change Tabs
F	Change Volume
G	Move Cursor

Holding B

Shortcut	Action
B + A	Close Window
B + C	Close Tab
B + D	Play / Pause
B + E	Change Windows
B + F	Zoom In / Out
B + G	Vertical and Horizontal Scroll

Logitech MX Master 3S and MX Anywhwere 2S

Notes:

• This shadow assumes logid is installed. Check the dependencies bellow on how to configure it.
• Blue rows represent a scroll input.
• Yellow rows require a clean button release (no combination was made)
• Gray rows count as a combination if pressed on a deeper state
• White rows never invalidate a clear state.
• Some keys are not available for every mouse due to their physical limitations.

Dependencies

This daemon requires python3, pip, evdev, inotifywait, xclip, edid-decode, and logiops/logid. It has only been tested in Ubuntu 24.04 LTS, you can install its dependencies with the following commands.

sudo apt update
sudo apt install -yq libpython3-dev inotify-tools xclip edid-decode
sudo pip3 install evdev
sudo apt install logiops # Only necessary if you use Logitech MX Master 3S

If you are using the Logitech MX Master 3S, you need to map its upper button (G) to the keyboard key KEY_B. Example Logid config file (/etc/logid.cfg):

devices: ({name: "MX Master 3S";
hiresscroll:
{
hires: true;
invert: false;
target: false;};
smartshift:
{
on: false;
threshold: 30;
torque: 10;};
dpi: 2000;
buttons: ({cid: 0xc4;
action: {
type: "Keypress";
keys: ["KEY_B"];};},{
cid: 0x52;action={type: "ToggleSmartShift";};});});

Install

Install the python service and compiled programs

# Make sure your qmake is installed and accessible via PATH. For instance, qt creator would install it around your home directory:
sudo bash -c "PATH='/home/$USER/Qt/6.4.0/gcc_64/bin/':\$PATH ./install.sh"# Start the service in the system
sudo service devstream start
# Activate autostart during system boot
sudo systemctl enable devstream

Uninstall

# Stop services, uninstall them, and remove all files
sudo ./uninstall.sh