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SubjectRe: Fix sudden warps in mousedev
Dmitry Torokhov wrote:
> On 3/27/07, Chuck Ebbert <cebbert@redhat.com> wrote:
>> Dmitry Torokhov wrote:
>> >>
>> >> 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
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