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SubjectRe: udev on 2.6.14 fails to create /dev/input/event2 on T40 Thinkpad
On Sun, Nov 06, 2005 at 12:47:02AM -0500, Theodore Ts'o wrote:
>
> When I upgraded to 2.6.14 from 2.6.14-rc5, my X server failed to stop.
> Investigation revealed it was because my CorePointer was the Synaptics
> driver, and the device corresponding to the Synaptics touchpad
> (/dev/input/event2 on my laptop) was not being created. Once I manually
> created the device with the proper major/minor device numbers, X started
> correctly.
>
> A comparison of "udevinfo -e" on 2.6.14-rc5 and 2.5.14 reveals the
> following differences. Was this change deliberate? And can it be
> reverted?
>
> --- udevinfo-2.6.14-rc5 2005-11-06 00:17:06.000000000 -0500
> +++ udevinfo-2.6.14 2005-11-06 00:22:42.000000000 -0500
> @@ -86,27 +86,15 @@
> P: /class/cpuid/cpu0
> N: cpu/0/cpuid
>
> -P: /class/input/event0
> -N: input/event0
> -
> -P: /class/input/event1
> -N: input/event1
> -
> -P: /class/input/event2
> -N: input/event2
> -
> -P: /class/input/event3
> +P: /class/input/input3/event3
> N: input/event3
>
> +P: /class/input/input3/mouse1
> +N: input/mouse1
> +
> P: /class/input/mice
> N: input/mice
>
> -P: /class/input/mouse0
> -N: input/mouse0
> -
> -P: /class/input/mouse1
> -N: input/mouse1
> -
> P: /class/misc/device-mapper
> N: mapper/control

The change in the path in udevinfo is correct with that kernel, but it
seems, that you miss some devices.

What does:
find /sys/class/input
print?

What does:
ls -l /dev/input
print?

Are the same modules loaded after bootup?

If the devices show up in /sys/class/input, but not in /dev/input,
does running:
/sbin/udevstart
create them?

Thanks,
Kay
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