Hi, Current kernels (e.g. 2.6.20-git-as-of-yesterday) don't boot for me, and it seems like ACPI is the cause: the last thing I can see in the log is swapper/1 is trying to acquire lock &ec->lock but task is already holding lock &ec->lock Snippets from the call trace: acpi_ec_transaction acpi_ec_read acpi_ec_space_handler acpi_ev_address_space_dispatch acpi_ex_access_region acpi_ex_field_datum_ acpi_ex_extract_from_field ... acpi_ex_ns_evaluate acpi_ev_execute_reg_method acpi_ev_reg_run acpi_ns_walk_namespace acpi_ev_execute_reg_methods acpi_install_address_space_handler acpi_ec_start acpi_start_single_object acpi_device_probe really_probe ... bus_add_driver ... acpi_ec_init Ideas? Patches? Thanks, Dominik - 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