[ltp] Wheel mouse doesn't work

James Knott linux-thinkpad@linux-thinkpad.org
Thu, 09 Jun 2005 16:20:47 -0400


Matt Graham wrote:
> On Thursday 09 June 2005 14:01, after a long battle with technology, 
> James Knott wrote:
>>I've been trying to get a wheel mouse to work in SuSE 9.3, on my R31
>>ThinkPad.  However, even though it's configured exactly the same way,
>>as on the desktop system, the scroll wheel does not work on the
>>ThinkPad, while running Linux.  I've tried two different mice (both
>>Logitech), but neither work, with Linux on the ThinkPad, but both
>>work with XP on the ThinkPad as well as Linux on my desktop system.
> 
> Is this a PS/2 mouse?  On Thinkpads, the PS/2 port in the back shares 
> data lines with the built-in Trackpoint.  Events from the device 
> connected to the PS/2 port are reported on /dev/psaux .  The Trackpoint 
> uses the PS/2 mouse protocol.  Most wheelmice use the IMPS/2 protocol.  
> Using different protocols for the mouse on the PS/2 port and the 
> Trackpoint is theoretically possible, but there are currently some 
> problems with X that make it... difficult.  USB mice, OTOH, work fine.
> 
> You may want to check the archives of this mailing list and see if 
> anyone's posted a solution in the past.  It's possible--not insanely 
> likely, but possible.  It may be something as simple as adding 
> "psmouse.proto=imps" to the kernel command line (assuming a 2.6 kernel 
> with PS/2 mouse support built in) or "rmmod psmouse && modprobe psmouse 
> proto=imps" if PS/2 mouse support is modular.  It may not be.  I don't 
> know for sure; I've never used the PS/2 port on my Thinkpad.  HTH 
> anyway,
> 

There's no PS/2 connectors on the R31.  I'm using a USB mouse.  Adding
that "psmouse.proto=imps" parameter doesn't seem to make any difference.
 When I try the rmmod command, I get an error message, that the psmouse
module doesn't exist.

tnx jk