>>>>> "Dinh-Tuan" == Dinh-Tuan Pham <Dinh-Tuan.Pham@imag.fr> writes: Dinh-Tuan> sunMouseProc ioctl VUIDGFORMAT: invalid argument I saw this before; it's most likely because you have /dev/mouse symlinked to /dev/gpmdata. You instead want to symlink it to /dev/sunmouse, i.e.: ln -sf /dev/sunmouse /dev/mouse