Fan Speed Control Trouble on Asrock E3C226D2I


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For my EP2C602 the commands are slightly different. On this board, command

0x3a 0x01

works different:

 

ipmitool raw 0x3a 0x01 CPU_1_OVERRIDE CPU_1 REAR_1 FRONT_1 FRONT_2 UNKNOWN

 

So, only five fans can be set up and value

0x00

is just minimal speed, not automatic. Automatic speed can only be enabled for

CPU_1

by setting

CPU_1_OVERRIDE

to

0

(in which case the

CPU_1

value is ignored). So for 30% speed on all fans and

CPU_1

auto speed:

 

ipmitool raw 0x3a 0x01 0 30 30 30 30 30

 

CPU_2

can be controlled in the same way through another command,

0x3a 0x11

, which also controls two additional fans:

 

ipmitool raw 0x3a 0x11 CPU_2_OVERRIDE CPU_2 UNKNOWN UNKNOWN

 

ipmitool raw 0x3a 0x11 0 30 30 30

 

To get the current status of all fans, which also includes the current RPM of the CPU fans in auto mode:

ipmitool raw 0x3a 0x02
ipmitool raw 0x3a 0x12

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For my EP2C602 the commands are slightly different. On this board, command

0x3a 0x01

works different:

 

ipmitool raw 0x3a 0x01 CPU_1_OVERRIDE CPU_1 REAR_1 FRONT_1 FRONT_2 UNKNOWN

 

So, only five fans can be set up and value

0x00

is just minimal speed, not automatic. Automatic speed can only be enabled for

CPU_1

by setting

CPU_1_OVERRIDE

to

0

(in which case the

CPU_1

value is ignored). So for 30% speed on all fans and

CPU_1

auto speed:

 

ipmitool raw 0x3a 0x01 0 30 30 30 30 30

 

CPU_2

can be controlled in the same way through another command,

0x3a 0x11

, which also controls two additional fans:

 

ipmitool raw 0x3a 0x11 CPU_2_OVERRIDE CPU_2 UNKNOWN UNKNOWN

 

ipmitool raw 0x3a 0x11 0 30 30 30

 

To get the current status of all fans, which also includes the current RPM of the CPU fans in auto mode:

ipmitool raw 0x3a 0x02
ipmitool raw 0x3a 0x12

 

That's some good info. Where'd you get it from? The current status command works for my board, which could be useful. Did you try the ipmi plugin? Looks like case fans could be controlled as it's currently written.

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