Thu Sep  3 18:08:56 CEST 2015
make: Entering directory `/usr/src/linux-headers-3.16.0-48-generic'
  LD      /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/built-in.o
  CC [M]  /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_auth.o
  CC [M]  /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_bufs.o
  CC [M]  /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_cache.o
In file included from /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_cache.c:34:0:
/var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/include/backport.h:21:29: error: redefinition of ‘acpi_os_ioremap’
 static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
                             ^
In file included from include/linux/acpi.h:46:0,
                 from /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/include/backport.h:18,
                 from /var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_cache.c:34:
include/acpi/acpi_io.h:6:29: note: previous definition of ‘acpi_os_ioremap’ was here
 static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
                             ^
make[1]: *** [/var/lib/dkms/i915-3.19-3.13/3.19-rc6/build/drivers/gpu/drm/drm_cache.o] Error 1
make: *** [_module_/var/lib/dkms/i915-3.19-3.13/3.19-rc6/build] Error 2
make: Leaving directory `/usr/src/linux-headers-3.16.0-48-generic'