[Bug 193981] New: AMDGPU: R9 380 Fan rotates all the time (loud!)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=193981

            Bug ID: 193981
           Summary: AMDGPU: R9 380 Fan rotates all the time (loud!)
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.9.7
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: plusfabi at gmail.com
        Regression: No

Created attachment 254121
  --> https://bugzilla.kernel.org/attachment.cgi?id=254121&action=edit
dmesg output

The fan of my "Sapphire R9 380 ITX" is really loud on Linux. 

cat /sys/class/hwmon/hwmon2/pwm1
reports that it runs all the time on
"94"

while 
sensors | grep amdgpu -A 3
tells me that its at 

amdgpu-pci-0100
Adapter: PCI adapter
temp1:        +31.0°C  (crit =  +0.0°C, hyst =  +0.0°C)

When I now set /sys/class/hwmon/hwmon2/pwm1 to 0, the tmp still stays at
31-34°C while "idle". So thats not a thing.


Before linux loads (UEFI-routines, grub) and on Windows the fan stays offline
unless there is enough load that it is needed. On linux the fan starts to
rotate on boot and keeps rotating all the time (on load it rotates faster).
at 41°C pwm1 goes up to 104


find /sys/class/hwmon/hwmon2/ -maxdepth 1 -type f -print -execdir cat '{}' \;
-exec echo \;
/sys/class/hwmon/hwmon2/pwm1_min
0

/sys/class/hwmon/hwmon2/pwm1_max
255

/sys/class/hwmon/hwmon2/pwm1
94

/sys/class/hwmon/hwmon2/pwm1_enable
1

/sys/class/hwmon/hwmon2/temp1_crit
0

/sys/class/hwmon/hwmon2/uevent

/sys/class/hwmon/hwmon2/temp1_crit_hyst
0

/sys/class/hwmon/hwmon2/temp1_input
32000

/sys/class/hwmon/hwmon2/name
amdgpu

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