$ dpkg -S sonypi
linux-headers-2.6.24-15-generic: /usr/src/linux-headers-2.6.24-15-generic/include/linux/sonypi.h
linux-headers-2.6.24-14-generic: /usr/src/linux-headers-2.6.24-14-generic/include/config/sonypi/compat.h
linux-headers-2.6.24-15: /usr/src/linux-headers-2.6.24-15/include/linux/sonypi.h
linux-headers-2.6.24-15-generic: /usr/src/linux-headers-2.6.24-15-generic/include/config/sonypi/compat.h
linux-headers-2.6.24-16-generic: /usr/src/linux-headers-2.6.24-16-generic/include/linux/sonypi.h
linux-headers-2.6.24-16-generic: /usr/src/linux-headers-2.6.24-16-generic/include/config/sonypi
linux-headers-2.6.24-14-generic: /usr/src/linux-headers-2.6.24-14-generic/include/config/sonypi
linux-headers-2.6.24-16-generic: /usr/src/linux-headers-2.6.24-16-generic/include/config/sonypi/compat.h
hal: /usr/lib/hal/hal-system-sonypic
ia32-libs: /usr/lib32/directfb-1.0-0/inputdrivers/libdirectfb_sonypi.so
linux-libc-dev: /usr/include/linux/sonypi.h
linux-headers-2.6.24-16: /usr/src/linux-headers-2.6.24-16/include/linux/sonypi.h
linux-headers-2.6.24-14-generic: /usr/src/linux-headers-2.6.24-14-generic/include/linux/sonypi.h
linux-headers-2.6.24-14: /usr/src/linux-headers-2.6.24-14/include/linux/sonypi.h
linux-headers-2.6.24-15-generic: /usr/src/linux-headers-2.6.24-15-generic/include/config/sonypi
libdirectfb-1.0-0: /usr/lib/directfb-1.0-0/inputdrivers/libdirectfb_sonypi.so