Bug 105718 - amdgpu reported fan speed looks too high (dual fan Sapphire Pulse Vega 56)
Summary: amdgpu reported fan speed looks too high (dual fan Sapphire Pulse Vega 56)
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
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Keywords:
: 108352 (view as bug list)
Depends on:
Blocks:
 
Reported: 2018-03-23 16:55 UTC by Shmerl
Modified: 2018-11-16 11:31 UTC (History)
1 user (show)

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Description Shmerl 2018-03-23 16:55:03 UTC
I have Sapphire Pulse Vega 56, which ships with two fans. According to this: https://www.youtube.com/watch?v=3mKSrSluxbM&t=1m25s
in a normal scenario, fans should spin at under 650 RPM. However sensors report for idle load around 1280 RPM for me, which looks like a double value of the above:

amdgpu-pci-2f00
Adapter: PCI adapter
fan1: 1281 RPM
temp1: +29.0°C (crit = +0.0°C, hyst = +0.0°C)

pwm1 is set to auto:

sudo cat /sys/class/drm/card0/device/hwmon/hwmon3/pwm1_enable
2

Is this a misdetection, or it's supposed to be like that? Actual fans are pretty silent.

System: Debian testing, x86_64 (kernel 4.15.4).
Comment 1 Wilko Bartels 2018-11-16 11:25:47 UTC
(In reply to Shmerl from comment #0)
> I have Sapphire Pulse Vega 56, which ships with two fans. According to this:
> https://www.youtube.com/watch?v=3mKSrSluxbM&t=1m25s
> in a normal scenario, fans should spin at under 650 RPM. However sensors
> report for idle load around 1280 RPM for me, which looks like a double value
> of the above:
> 
> amdgpu-pci-2f00
> Adapter: PCI adapter
> fan1: 1281 RPM
> temp1: +29.0°C (crit = +0.0°C, hyst = +0.0°C)
> 
> pwm1 is set to auto:
> 
> sudo cat /sys/class/drm/card0/device/hwmon/hwmon3/pwm1_enable
> 2
> 
> Is this a misdetection, or it's supposed to be like that? Actual fans are
> pretty silent.
> 
> System: Debian testing, x86_64 (kernel 4.15.4).

i notice the same for my vega pulse.
in ur example im pretty sure the fans are even off.they should at such a low temp. the rpm information seems to work as long at it goes up. but when the temperature falls below 55°C the fan are going to stop and the rpm info doesnt get updated anymore and stays there.
Comment 2 Wilko Bartels 2018-11-16 11:31:15 UTC
*** Bug 108352 has been marked as a duplicate of this bug. ***


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