Quick question: how do you set xorg options with a command?

For example, I have an Xorg entry as follows:

Section "InputClass"
    Identifier  "Marble Mouse"
    MatchProduct "Logitech USB Trackball"
    Option "VertScrollDelta" "4"

and I'd like to change the value of "VertScrollDelta" without restarting my computer. Do you know any command-line interface to it? I've looked into xinput, but the properties of which does not necessary correspond to xorg options.

  • Have you tried gpointing-device-settings? – ayan4m1 Nov 10 '10 at 22:47

xinput is your best bet. I cannot confirm this as working as I do not have similar hardware, but try running:

xinput --set-prop --type=int --format=8 "Logitech USB Trackball" "VertScrollDelta" 4

The --format=8 specifies an 8-bit integer value; using 16 or 32 may work if 8 does not.

You can also use the following to try and troubleshoot this on your own:

xinput --list will show you a list of input devices that xinput can work with

xinput --list-props "Logitech USB Trackball" will show you the current properties for your device

  • I already tried xinput --list-props "Logitech USB Trackball" before posting this question, but it did not show VertScrollDelta or anything like it. Your first command did not work in my case. If I can get a mapping between option names in xorg nad xinput property names, it'd help; but I'm not sure if there is. – Gödel Nov 10 '10 at 20:37
  • 1
    In that case, it would seem that this is a limitation of the X server. Sorry I couldn't be of any assistance. – ayan4m1 Nov 10 '10 at 22:44

try to install and use gsynaptics to reconfigure your device:

  $ sudo apt-get install gsynaptics
  • It almost has nothing to do with xorg or its setting. – Gödel Nov 12 '10 at 21:34

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