Hi, I hope this is an appropriate place to post this. I have a laptop, circa 2004, which apparently has a buggy DSDT that causes the battery monitoring to stop working. I'm presently using kernel 3.3.5 but this has happened for years, as long as I've had the laptop. My battery/power readings will work normally until suddenly, randomly it shows something like this in dmesg: [ 6286.707038] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PIB_.EC0_.SMWR] (Node ffff88007d028348), AE_AML_INFINITE_LOOP (20120111/psparse-536) [ 6286.707074] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PIB_.EC0_.SMSL] (Node ffff88007d028398), AE_AML_INFINITE_LOOP (20120111/psparse-536) [ 6286.707096] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PIB_.EC0_._Q09] (Node ffff88007d028438), AE_AML_INFINITE_LOOP (20120111/psparse-536) After that, the battery state is no longer updated and eventually my laptop powers off without any warning or proper shutdown. Sometimes the messages are repeated. Because it is unpredictable, it is difficult to test. Sometimes it fails within a minute of booting, other times it could go hours or even days before failing. It's usually within an hour or two of booting the computer. I've tried decompiling/recompiling the DSDT and "fixing" things in it, but I have only managed to make things behave even worse. Probably due to my complete lack of understanding of ACPI, DSDT or ASL. :) I'm sure there's some logical flaw causing the infinite loop but I can't find it. If anyone is familiar with this and can guide me in the right direction to figure out where the problem lies and how (or if) it can be fixed, worked around, or what the error message is telling me, I would be very grafeful. Thanks in advance. Recompilation output is below. Please let me know if I should provide any other data, or post/make available the DSDT file itself. Intel ACPI Component Architecture ASL Optimizing Compiler version 20111123-64 [May 16 2012] Copyright (c) 2000 - 2011 Intel Corporation dsdt.dsl 381: Method (\_WAK, 1, NotSerialized) Warning 1105 - ^ Reserved method must return a value (Integer/Package required for _WAK) dsdt.dsl 2109: CreateWordField (BUFA, \_SB.PCI0.PIB.ALKA._CRS._Y0B._INT, IRAI) Warning 1125 - ResourceTag larger than Field ^ (Tag: 32 bits, Field: 16 bits) dsdt.dsl 2164: CreateWordField (BUFB, \_SB.PCI0.PIB.ALKB._CRS._Y0C._INT, IRBI) Warning 1125 - ResourceTag larger than Field ^ (Tag: 32 bits, Field: 16 bits) dsdt.dsl 2212: CreateWordField (BUFC, \_SB.PCI0.PIB.ALKC._CRS._Y0D._INT, IRCI) Warning 1125 - ResourceTag larger than Field ^ (Tag: 32 bits, Field: 16 bits) dsdt.dsl 2260: CreateWordField (BUFD, \_SB.PCI0.PIB.ALKD._CRS._Y0E._INT, IRDI) Warning 1125 - ResourceTag larger than Field ^ (Tag: 32 bits, Field: 16 bits) dsdt.dsl 2303: CreateByteField (BUFA, \_SB.PCI0.PIB.LNKA._CRS._Y0F._INT, IRA1) Warning 1125 - ResourceTag larger than Field ^ (Tag: 16 bits, Field: 8 bits) dsdt.dsl 2377: CreateByteField (BUFB, \_SB.PCI0.PIB.LNKB._CRS._Y10._INT, IRB1) Warning 1125 - ResourceTag larger than Field ^ (Tag: 16 bits, Field: 8 bits) dsdt.dsl 2451: CreateByteField (BUFC, \_SB.PCI0.PIB.LNKC._CRS._Y11._INT, IRC1) Warning 1125 - ResourceTag larger than Field ^ (Tag: 16 bits, Field: 8 bits) dsdt.dsl 2525: CreateByteField (BUFD, \_SB.PCI0.PIB.LNKD._CRS._Y12._INT, IRD1) Warning 1125 - ResourceTag larger than Field ^ (Tag: 16 bits, Field: 8 bits) dsdt.dsl 5095: Method (SMSL, 0, NotSerialized) Warning 1113 - ^ Not all control paths return a value (SMSL) ASL Input: dsdt.dsl - 5911 lines, 229987 bytes, 2466 keywords AML Output: dsdt.aml - 20957 bytes, 572 named objects, 1894 executable opcodes Hex Dump: dsdt.hex - 196818 bytes Compilation complete. 0 Errors, 10 Warnings, 0 Remarks, 799 Optimizations -- 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
