Bug 118748

Summary:	Multiple mice share the same input device
Product:	[openSUSE] SUSE LINUX 10.0	Reporter:	Michael Stather <kontakt>
Component:	SaX2	Assignee:	Marcus Schaefer <ms>
Status:	RESOLVED INVALID	QA Contact:	Klaus Kämpf <kkaempf>
Severity:	Normal
Priority:	P5 - None	CC:	ms, sndirsch
Version:	RC 1
Target Milestone:	---
Hardware:	Other
OS:	All
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Michael Stather 2005-09-25 22:40:26 UTC

If the system has multiple mice, YaST sets up the x server so that the devices
for all mice are set to /dev/mice.
IMHO this is wrong, because /dev/mice collects all events from all associated
mice. So from the server point of view there are two mice which get exactly the
same events, no matter which one is moved. The x server should either use the
real devices, or just use on mouse (of the emulated type ps/2) in the config.
Since every mouse has its own options in the config file I think the first
option is more correct.

Comment 1 Martin Lasarsch 2005-09-26 11:01:07 UTC

Stefan, comments on this?

Comment 2 Stefan Dirsch 2005-09-26 11:10:51 UTC

Something for Marcus.

Comment 3 Stefan Dirsch 2005-09-30 14:04:39 UTC

According to my latest comment.

Comment 4 Marcus Schaefer 2005-10-05 15:44:11 UTC

This is not quite correct. The kernel input interface combines all 
standard mouse types to one protocol (explorerps/2) and one multiplexer 
device (/dev/input/mice). The input interface also knows about the 
capabilities of the mouse and assigns it. The standard X11 mouse driver 
does only mappings from buttons and interprets the protocol. 
 
Device which are more special like synaptics touchpads or wacom tablets 
etc, etc, are not handled via /dev/input/mice but using the raw information 
from /dev/input/event[X]. The biggest problem here is that the driver 
has to take care about the device itself because the name is not persistent. 
 
Well this is not a configuration issue and almost all special drivers like 
alps,synaptics,wacom ... more to come; does it right 
 
The behavior here is correct and intentional.