help with /dev/input/ & xorg.conf

adamruss · 08-13-2007, 02:45 PM

hi,

i have a laptop, so my usb logitech mouse sometimes is connected and sometimes isnt.
anyway i setup in xorg.conf so it will use the "evdev" module which works great.

my problem - the number of the /dev/input/event keeps changing! now i thought i solved it with putting in /etc/udev/rules.d/20-names.rules:

Code:

KERNEL=="event[0-9]*", SYSFS{name}=="Logitech USB Receiver", SYMLINK+="input/vxrev"

and it did make a symlink! a correct one everytime! so what is the problem - I DONT KNOW!: stupid xorg.conf is not willing to work with the symlink! i dont understand why.

Option "Device" "/dev/input/event4" - WORKS
Option "Device" "/dev/input/vxrev" - Dont Work

and...

Code:

adam@adam-laptop:/dev/input$ ls -al vx*
lrwxrwxrwx 1 root root 6 2007-08-13 19:42 vxrev -> event4

Can someone help me please? i looked at all the related threads....

SOLVED: instead of "vxrev" i called the symlink "event10" and it worked

HappyTux · 08-13-2007, 04:14 PM

Quote:

Originally Posted by adamruss

hi,

i have a laptop, so my usb logitech mouse sometimes is connected and sometimes isnt.
anyway i setup in xorg.conf so it will use the "evdev" module which works great.

my problem - the number of the /dev/input/event keeps changing! now i thought i solved it with putting in /etc/udev/rules.d/20-names.rules:

Code:

KERNEL=="event[0-9]*", SYSFS{name}=="Logitech USB Receiver", SYMLINK+="input/vxrev"

and it did make a symlink! a correct one everytime! so what is the problem - I DONT KNOW!: stupid xorg.conf is not willing to work with the symlink! i dont understand why.

Option "Device" "/dev/input/event4" - WORKS
Option "Device" "/dev/input/vxrev" - Dont Work

and...

Code:

adam@adam-laptop:/dev/input$ ls -al vx*
lrwxrwxrwx 1 root root 6 2007-08-13 19:42 vxrev -> event4

Can someone help me please? i looked at all the related threads....

You might want to try using the Name instead of Device for the config like I do for mine.

Code:

#Logitech LX7 Cordless Optical
Section "InputDevice"
        Identifier      "Mouse0"
        Driver          "evdev"
        Option          "CorePointer"
        Option          "Name"                  "Logitech USB RECEIVER"
        Option          "Emulate3Buttons"       "true"
        Option          "Resolution"            "1200"
EndSection

That way you always get the proper device you find the name by using cat /proc/bus/input/devices looking for one similar to the below you have to have it named exactly as it appears in the Name= line, although look at your post I suspect you can just copy and paste my line into your xorg.conf.

Code:

I: Bus=0003 Vendor=046d Product=c50e Version=0111
N: Name="Logitech USB RECEIVER"
P: Phys=usb-0000:00:1a.0-2/input0
S: Sysfs=/class/input/input3
U: Uniq=
H: Handlers=mouse1 event3
B: EV=20007
B: KEY=ffff0000 0 0 0 0
B: REL=143
B: LED=ff00

adamruss · 08-13-2007, 06:22 PM

no i tried that before, didnt work for me. but i got the solution, for some reason xorg.conf didnt agree with the name "vxrev" so i changed the link name to event10 and it worked