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.
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