This is either a bios problem, or a problem with hwe-thinkpad module at
present.
** Description changed:
Suspend and hibernate stress test got failed with following errors in logs:
s3: HIGH Kernel message: [10512.177806] ACPI Warning: For
\_SB_.PCI0.LPCB.H_EC.LED_: Excess arguments - needs 1, found 2
(20110623/nspredef-326)
s4: HIGH Kernel message: [11728.328110] ACPI Warning: For
\_SB_.PCI0.LPCB.H_EC.LED_: Excess arguments - needs 1, found 2
(20110623/nspredef-326)
Steps:
1. Log into desktop
2. Run s3/s4 stress test for 30 times
Expected results:
Suspend and hibernate stress got passed without any error
Actual results:
s3/s4 got failures in log file
Diagnosis:
This warning is generated by the ACPI LED method expects 1 argument, but the
kernel driver thinkpad_acpi.c function led_set_status will evaluate the ACPI
LED method with two arguments (let and led_status):
- Method (LED, 1, NotSerialized)
- {
- If (H8DR)
- {
- Store (Arg0, MLED)
- }
- Else
- {
- And (RBEC (0x0B), 0xFD, Local0)
- Or (Local0, Arg0, Local0)
- WBEC (0x0B, Local0)
- }
- }
+ Method (LED, 1, NotSerialized)
+ {
+ If (H8DR)
+ {
+ Store (Arg0, MLED)
+ }
+ Else
+ {
+ And (RBEC (0x0B), 0xFD, Local0)
+ Or (Local0, Arg0, Local0)
+ WBEC (0x0B, Local0)
+ }
+ }
and I also checked with lenovo thiinkpad x220, x200, seems it accepts two
arguments in ACPI LED method:
- Method (LED, 2, NotSerialized)
- {
- Or (Arg0, Arg1, Local0)
- If (\H8DR)
- {
- Store (Local0, HLCL)
- }
- Else
- {
- \WBEC (0x0C, Local0)
- }
- }
+ Method (LED, 2, NotSerialized)
+ {
+ Or (Arg0, Arg1, Local0)
+ If (\H8DR)
+ {
+ Store (Local0, HLCL)
+ }
+ Else
+ {
+ \WBEC (0x0C, Local0)
+ }
+ }
- We might need Lenovo to check this.
It seems the spec change, if yes, we might need the spec.
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https://bugs.launchpad.net/bugs/1118657
Title:
Lenovo m490/k4350 - ACPI Warnings for \_SB_.PCI0.LPCB.H_EC.LED_
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