search for: dutycycl

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2018 Feb 07
1
Addressing the problem of noisy GPUs under Nouveau
...} break; } } } fanCoolerTableGetPwmScale_exit: return status; } /** * Converts a PWM duty cycle to a fan level (fan speed percentage) based on the * fan period and duty cycle. * * @param[in] fanPeriod The fan period to convert * @param[in] dutyCycle The duty cycle to convert * @param[in] fanPwmScaleOffset PWM scale offset, from the VBIOS table * @param[in] fanPwmScaleSlope PWM scale slope, from the VBIOS table * * @return The converted level */ NvU32 fanConvertDutyCycleToLevel ( NvU32 fanPeriod, NvU32 dutyCycle, N...
2018 Jan 28
3
Addressing the problem of noisy GPUs under Nouveau
...make it *very* difficult to find a sensible algorithm that >>> covered all the SKUs, given that some are inverted and others are not. >>> >>> For the noisy GPUs, a very useful experiment would be to try inverting it, >>> like this: >>> >>> pwmDutyCycle = pwmPeriod - pwmDutyCycle; >>> >>> ...and then see if fan control starts behaving closer to how you've actually >>> programmed it. >>> >>> Would that be easy enough to try out? It should help narrow down the >>> problem at least. >>...