Dear folk, Sorry, I does not familiar with ASL. I would like to ask if below ASL is valid or not. While (LLess (Local0, 0x0B)) { Name (_T_0, Zero) Store (LCDD, _T_0) If (LEqual (_T_0, 0x01DFE430)) { ... } Else { ... } } I got ACPI error like below. [ 37.457772] nssearch-0145 [12] ns_search_one_scope : Name [_T_0] (Integer) f7444780 found in scope [GBQC] f741cc00 [ 37.457775] ACPI Error (dswload-0790): [_T_0] Namespace lookup failure, AE_ALREADY_EXISTS [ 37.457779] dsutils-0089 [08] ds_clear_implicit_retu: Removing reference on stale implicit return obj f772d348 [ 37.457782] ACPI Exception (psloop-0227): AE_ALREADY_EXISTS, During name lookup/catalog [20081204] Looks like _T_0 can not exist in a while loop? Is this error relative with ASL code or not? Thank you in advanced. Best Regards, Edward -- 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