mouse wheel doesn't work any longer

[Joachim Reichel <joachim.reichel@gmx.de>]

Hi,

I recently upgraded my Thinkpad A30p and now the mouse wheel doesn't work any
longer. It has a built-in "mouse" (more a pen/trackball, no wheel) and a
external USB mouse with mouse wheel. "cat /dev/input/mice | hexdump" does not
show any events for the mouse wheel, same for /dev/psaux and /dev/gpmdata.

Before the pgrade, "grep -i 'usb\|mouse' /var/log/messages" reported

Jun  1 09:39:32 mpino1203 kernel: usb 2-1: USB disconnect, address 3
Jun  1 09:39:36 mpino1203 kernel: usb 2-1: new low speed USB device using
address 4
Jun  1 09:39:36 mpino1203 kernel: input: USB HID v1.10 Mouse [Logitech
USB-PS/2 Optical Mouse] on usb-0000:00:1d.1-1
Jun  1 09:39:36 mpino1203 usb.agent[26820]:      usbhid: already loaded
Jun  1 09:39:37 mpino1203 input.agent[26875]:      mousedev: already loaded
Jun  1 09:39:37 mpino1203 usb.agent[26820]:      usbmouse: blacklisted

but now I just have

Jun  5 16:18:03 mpino1203 kernel: input: PS/2 Generic Mouse on isa0060/serio1
Jun  5 16:18:03 mpino1203 input.agent[1470]:      mousedev: loaded successfully
Jun  5 16:18:03 mpino1203 kernel: mice: PS/2 mouse device common for all mice

"lsmod | grep 'usb\|mouse'" reports

mousedev               10476  1
psmouse                20360  0

Note that usbhid is not loaded, but loading doesn't solve the problem.

I don't have any clue how to track this down. Any ideas?

Regards,
  Joachim