7 evtest - Input device event monitor
11 evtest "/dev/input/eventX"
15 evtest displays information on the input device specified on the command
16 line, including all the events supported by the device. It then monitors the
17 device and displays all the events layer events generated.
19 evtest needs to be able to read from the device; in most cases this means it
22 evtest is commonly used to debug issues with input devices in X.Org. The
23 output of evtest shows the information presented by the kernel; based on
24 this information it can be determined whether a bug may be a kernel or an
29 If evtest does not show any events even though the device is being used, the
30 device may be grabbed by a process (EVIOCGRAB). This is usually the case
31 when debugging a synaptics device from within X. VT switching to a TTY or
32 shutting down the X server terminates this grab and synaptics devices can be
41 evtest was written by Vojtech Pavlik <vojtech@suse.cz>.
43 This manual page was written by Stephen Kitt <steve@sk2.org>, based on that
44 present in the lineakd package, for the Debian GNU/Linux system (but may be