Re: Fix sudden warps in mousedev

Dmitry Torokhov wrote:

On 3/27/07, Chuck Ebbert [off-list ref] wrote:

quoted

Dmitry Torokhov wrote:

quoted

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And why did the mouse numbers all get rearranged in 2.6.20, e.g.
mouse1 became mouse2 for many people?

Input devices are not guaranteed to be stable.

So people with z-axis mice need to redo their X config for each
kernel release when the device numbers change? Or should they
be using some other configuration?

People using this now have X crashes on kernel upgrade because
event1 became event2:

       Driver      "evdev"
       Option      "Device" "/dev/input/event1"

I'd recommend matching on "phys" or individual capabilities bits
instead of device node. See "man evdev".

I wrote a few udev rules to create specific /dev nodes for X with evedv (I run with multiple X users / screens / keyboards / mice on one machine).  I can forward you the udev rules and helper scripts if you want.  This means that you can hardcode the /dev nodes in your xorg.conf file and udev will make sure they don't move on you.  I wrote this up in the early days of evdev development before the phys stuff was there.

Matt