Unexpected server shutdown

Config file /etc/sensors.conf

Hi,

I forgot to mention that the script "healthd.sh" is being run as a cron job and it gets executed every 2 minutes. It has been running for about four months and the above mentioned shutdowns have "only" occured two times since.

Yours,

Paul

Hello,

I think it is because of ACPI and lm-sensors driver are trying to access the chip same time. Please try to disable the thermal module in kernel, or compile kernel without "thermal support" in ACPI section

I hope it helps, Regards Rudolf

Hi Rudolf,

thanks for the quick answer, I have removed kernel thermal support and have lm-sensors running again. Should the server shut down unexpectedly again, I'll drop another post here. Of course, it could take a while until luck strikes again :-)

Yours,

Paul

Hello please include the output of cat > /proc/acpi/dsdt > /tmp/dsdt.bin (no need to change kernel configuration)

Well of course cat /proc/acpi/dsdt > /tmp/dsdt.bin Thanks Rudolf

Hi,

I have attached files dsdt.bin and the disassembled version of it (iasl -d dsdt.bin --> dsdt.dsl).

If I try to recompile it (iasl -tc -oa dsdt.dsl), I get the following output:

Intel ACPI Component Architecture
ASL Optimizing Compiler version 20050902 [Sep  9 2005]
Copyright (C) 2000 - 2005 Intel Corporation
Supports ACPI Specification Revision 3.0

dsdt.dsl   262:     Method (\_WAK, 1, NotSerialized)
Warning  2078 -                 ^ Reserved method must return a value (_WAK)

dsdt.dsl   288:             Store (Local0, Local0)
Error    1048 -                         ^ Method local variable is not initialized (Local0)

dsdt.dsl   293:             Store (Local0, Local0)
Error    1048 -                         ^ Method local variable is not initialized (Local0)

ASL Input:  dsdt.dsl - 4192 lines, 134486 bytes, 1731 keywords
Compilation complete. 2 Errors, 1 Warnings, 0 Remarks, 0 Optimizations

Fankly, I don't know what to do with that...

Yours,

Paul

/proc/acpi/dsdt

iasl -d dsdt.bin --> dsdt.dsl

Hello,

I know what to do with that. I think you get the shutdown because acpi thinks it is too hot. Watch:

            Method (_TMP, 0, NotSerialized)                                                         
            {                                                                                       
                And (SENF, 0x01, Local6)                                                            
                If (LEqual (Local6, 0x01))                                                          
                {                                                                                   
                    Return (RTMP ())                                                                
                }                                                                                   
                Else                                                                                
                {                                                                                   
                    Return (0x0B86)                                                                 
                }                                                                                   
            }        

This is a method that is used by acpi to read the CPU temp

As you can see, this readings are enabled by magic SENF value. If they are enabled, RTMP method is called.

    Method (RTMP, 0, NotSerialized)                                                                 
    {                                                                                               
        Store (GBYT (0x4E), Local0)                                                                 
        Or (Local0, 0x01, Local1)                                                                   
        SBYT (0x4E, Local1)                                                                         
        Store (GBYT (0x50), Local1)                                                                 
        Store (GBYT (0x51), Local2)                                                                 
        ShiftLeft (Local1, 0x08, Local1)                                                            
        Or (Local1, Local2, Local3)                                                                 
        ShiftRight (Local3, 0x07, Local3)                                                           
        ShiftLeft (Local3, 0x02, Local1)                                                            
        Add (Local3, Local1, Local3)                                                                
        Add (Local3, 0x0AAC, Local3)                                                                
        If (LGreater (Local3, 0x0E8A))                                                              
        {                                                                                           
            Store (0x0AAC, Local3)                                                                  
        }                                                                                           
                                                                                                    
        SBYT (0x4E, Local0)                                                                         
        Return (Local3)                                                                             
    } 

The temp is in bank 1 addr 50. Now what has happened:

1) acpi bytecode changes bank to 1 2) lm-sensors driver changes bank 0 3) acpi reads some other registers with other than temp value ...

Due to lame design of ACPI it will be difficult to fix it. TYan and windows drivers solve it via that magic OFF value...

I will try to come with some solution and ask Tyan about it but it will take time.

Without the thermal module loaded, I think you should not have any more problems.

Regards,

Rudolf