GPM SUPPORT FOR LINUX EVENT INTERFACE MICE
Usage:
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Simply run
$ gpm -t evdev -m /dev/input/event##
Just as it if were a serial or PS/2 mouse. The hard bit is working out
which event device your mouse is plugged into. The way I do this is to
run
$ xxd /dev/input/event##
For all the event devices (in numerical order), and see which one
produces output when I wave the mouse.
Note that you may need to pass a `-r #' flag to gpm -- I find that it is
a tad too sensitive by default.
FAQ:
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Actually, these aren't FAQs at all since this is the first time I have
shown the world this code...
1: I get no output from any of the /dev/input/event## devices, what's
wrong?
Execute the following commands as root:
$ modprobe input
$ modprobe hid
$ modprobe evdev
These will load the driver if it is available. If it isn't (i.e. if
either of these commands fail), you'll need a newer kernel or a backport
- I would advise getting a newer kernel. It may also be worth checking
if you are also sufferring from the problem solved in Question 2...
2: The mouse moves randomly all over the place, or does nothing at all,
yet I get output from /dev/input/event##, what's with that?
There are two possibilities here - you may have other event devices such
as USB joysticks or keyboards attached, and the device node you're
looking at is one of them, or the major and minor numbers of your device
nodes are incorrect. It is worth noting that, as shipped, SuSE Linux
7.1 has the wrong minor numbers on it's event nodes.
If you suffer from the first problem, just try the other event devices
until you find the mouse. If you suffer from the second problem execute
the following commands as root in a bourne-compatible shell e.g. bash:
$ cd /dev/input
$ umask 22
$ rm event*
$ for i in `seq 0 63`;do mknod event${i} c 13 `echo ${i} 64 + p|dc`;done
3: I don't have a /dev/input directory, or the directory is empty.
If you use devfs, then (as root):
$ modprobe evdev
should fix it.
Otherwise, you can run the following commands as root:
$ mkdir -p /dev/input
$ cd /dev/input
$ umask 22
$ rm event*
$ for i in `seq 0 63`;do mknod event${i} c 13 `echo ${i} 64 + p|dc`;done
(c) 2001 Philip Willoughby <pgw99@doc.ic.ac.uk>
