Trace is during a modprobe strcmp of NULL pointer from acpi_device_probe + 0xA3/0x123 driver_probe_device __driver_attach bus_for_each_dev driver_attach __driver_attach bus_add_driver driver_register acpi_bus_register_driver acpi_video_register [video] acpi_video_init [video] _stext + 49 acpi_video_init + 0x0 .. .. sys_init_module /sbin/modprobe -b acpi:LNXVIDEO: abnormal exit IRQ routing has also broken which worked fine before (resulting in no USB) HP (Compaq) Presario V5000 F.15 (Intel Video, Intel Celeron CPU @1.46GHz) (note I'm not subscribed to linux-acpi) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html