[Nouveau] [TESTING CALL] Fan management

[Martin Peres]

Le 31/08/2011 13:48, Mr Dash Four a écrit :
>
>> The implemented fan management support
>> -----------------------------------------------------------
>>
>> Current fan management should only work on what we call PWM fans.
>>
>> This work should be usable up to (not including) nva3 chipset 
>> generation.
>> This is because nva3+ cards all have hw to drive the speed of the fan 
>> (pwm or i2c).
>>
>> Reading the fan speed (power): cat /sys/class/drm/cardX/device/pwm0
>>
>> Reading the fan speed (RPM): cat /sys/class/drm/cardX/device/fan0_input
>>
>> Setting the fan management method: echo X > 
>> /sys/class/drm/cardX/device/pwm0_enable
>> - X = 0: Fan management disabled, fan power set to 100%
>> - X = 1: Manual fan management (you can set the speed by writing 
>> [0->100] to /sys/class/drm/cardX/device/pwm0)
>> - X = 2: The default automatic fan management (equivalent to X = 3 
>> for the moment)
>> - X = 3: Linear fan management. The fan speed is linearly correlated 
>> to the temperature.
>> - X = 4: Target temperature management. The fan is driven to keep the 
>> GPU to a certain temperature
> I have 7800gs (NV49) card and tried to use the new driver yesterday 
> after pulling the latest source, compiling and installing it. 
> Unfortunately, pwm0_enable is not showing up, so I am unable to use 
> the fan management at all. Previous attempts to write values to either 
> /sys/class/drm/cardX/device/pwm0 or the port itself (using nvpoke) 
> also failed - even though the value changes the fan speed stays the 
> same. I was hoping that the latest additions will solve these problems 
> and reduce the noise coming out of the fan (blasting at 100%), but 
> that seems to be way off, at least for now.
>
> What could be the problem? Could it be that my card is using i2c 
> instead? Any ideas?
Could you provide your kernel logs and vbios please? I'll have a look at it.