Re: Mouse wheel does not work with kernel 2.6.x
> On Wed, Jun 16, 2004 at 10:56:40AM +0200, Joerg Johannes wrote:
>> I have a logitech USB mouse which works great using 2.4 kernels. With
>> exactly the same setup in X, the same mouse attached to the same
>> computer works still, but only the three buttons: scrolling the wheel
>> doesn't do anything, pressing it works as "paste" like it should.
>> Obviously it can't be the X configuration which is faulty, because it
>> still works when I boot back to 2.4. Also the kernel configuration
>> should be OK, because otherwise the mouse wouldn't work at all.
> [snip
>> CONFIG_PSMOUSE=y
>
> I had the same issue recently... the solution is to set CONFIG_PSMOUSE
> to "n" (or "m", and just don't load the module). The problem is most
> likely that your BIOS has PS/2 emulation enabled, which typically
> doesn't support the wheel, and the PSMOUSE code is handling the mouse.
> The USB subsystem includes it's own mouse drivers, which will be used
> as long as PSMOUSE support is disabled. Apparently 2.4 would go ahead
> and use the USB drivers in either case... no idea why that changed.
This is probably a side effect of moving PS2 mouse handling to input
subsystem in 2.6 (it was standalone in 2.4).
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