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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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 Posted: Sun Apr 16, 2006 9:53 pm Post subject: Difference between /dev/input/mouse0, event1 and mice? |
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What is the actual difference between these:
/dev/input/mouse0
/dev/input/mice
/dev/input/event1
It seems that mouse0 and mice produce the exact same output with cat. Event1 produce slightly different output. But obviously they all are mouse device nodes. Can I get rid of unused ones? I only have one mouse. "cat /proc/bus/input/devices" gives:
I: Bus=0011 Vendor=0002 Product=0002 Version=0070
N: Name="PS2++ Logitech MX Mouse"
P: Phys=isa0060/serio1/input0
S: Sysfs=/class/input/input1
H: Handlers=mouse0 event1
B: EV=7
B: KEY=ff0000 0 0 0 0 0 0 0 0
B: REL=103
So there is no "mice" listed in Handlers. Why is that? |
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Ferdinando
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Joined: 25 Nov 2003
Posts: 1027
Location: Gaeta (LT) - Italy
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| Posted: Sun Apr 16, 2006 9:56 pm Post subject: |
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mice is for handling more than one mouse simultaneously (e.g. touchpad and usb mouse on laptops); mouse and event are two different kernel interfaces to the device.
Bye
_________________
La risposta, non la devi cercare fuori, la devi cercare dentro di te: e però è SBAGLIATA!
-- Corrado Guzzanti, "Pippo Chennedy Show", 1997 |
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Paapaa
l33t
Joined: 14 Aug 2005
Posts: 955
Location: Finland
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| Posted: Mon Apr 17, 2006 8:50 am Post subject: |
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| Ferdinando wrote: | | mice is for handling more than one mouse simultaneously (e.g. touchpad and usb mouse on laptops); |
Ok.
| Ferdinando wrote: | | mouse and event are two different kernel interfaces to the device. |
Ok, but why does cat produce slightly different output? And is there any difference which one I use in X? |
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Ferdinando
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Joined: 25 Nov 2003
Posts: 1027
Location: Gaeta (LT) - Italy
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| Posted: Mon Apr 17, 2006 9:06 am Post subject: |
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| Paapaa wrote: | | Ok, but why does cat produce slightly different output? And is there any difference which one I use in X? |
Well, the two are different, in output too; I read somewhere that the event interface (CONFIG_INPUT_EVDEV), which is relatively new, is meant to be the default one in the future, so you may want to use that. Still, for a normal ps2 mouse the old interface (CONFIG_MOUSE_PS2) is probably still the best one, since it's more tested and in many cases has better response times.
In X you only need to specify the appropriate protocol: if I recall correctly, "event" for the first and "ps/2" or "imps/2" for the second one.
Bye
_________________
La risposta, non la devi cercare fuori, la devi cercare dentro di te: e però è SBAGLIATA!
-- Corrado Guzzanti, "Pippo Chennedy Show", 1997 |
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