O mouse Bluetooth produz caracteres durante a rolagem em 12.04 / 14.10 / 15.10

Question

Eu tenho um mouse óptico ultra fino TouchTech bluetooth T630 e o mouse funciona como esperado na maioria das vezes (pares sem problemas). No entanto, muitas vezes (nem sempre) durante a rolagem, o mouse produz caracteres (por exemplo, número 5) repetidamente, como se a tecla tivesse sido pressionada no teclado. Isso aconteceu tanto no Ubuntu 12.04, 14.10 e agora no 15.10.

Este é um trecho de xev ilustrando o que acontece:

ButtonPress event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57208, (367,339), root:(1652,369),
    state 0x0, button 4, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57208, (367,339), root:(1652,369),
    state 0x800, button 4, same_screen YES

ButtonPress event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57276, (367,339), root:(1652,369),
    state 0x0, button 4, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57276, (367,339), root:(1652,369),
    state 0x800, button 4, same_screen YES

KeyPress event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57467, (367,339), root:(1652,369),
    state 0x0, keycode 14 (keysym 0x35, 5), same_screen YES,
    XLookupString gives 1 bytes: (35) "5"
    XmbLookupString gives 1 bytes: (35) "5"
    XFilterEvent returns: False

KeyRelease event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57479, (367,339), root:(1652,369),
    state 0x0, keycode 14 (keysym 0x35, 5), same_screen YES,
    XLookupString gives 1 bytes: (35) "5"
    XFilterEvent returns: False

ButtonPress event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57490, (367,339), root:(1652,369),
    state 0x0, button 5, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57490, (367,339), root:(1652,369),
    state 0x1000, button 5, same_screen YES

ButtonPress event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57512, (367,339), root:(1652,369),
    state 0x0, button 5, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4800001,
    root 0x9d, subw 0x0, time 57512, (367,339), root:(1652,369),
    state 0x1000, button 5, same_screen YES

Alguma ideia de como depurar este problema?