[Bug 201539] New: AMDGPU R9 390 automatic fan speed control in Linux 4.19

[b***@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

Bug ID: 201539
Summary: AMDGPU R9 390 automatic fan speed control in Linux
4.19
Product: Drivers
Version: 2.5
Kernel Version: 4.19
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-***@kernel-bugs.osdl.org
Reporter: ***@gmail.com
Regression: No

GPU: R9 390
Kernel module: amdgpu
Application (example): Rise of the Tomb Raider benchmark

In Linux 4.18 the fan speed of the GPU gradually adapts to GPU load. Maximum
pwm is 155 during the benchmark.

In Linux 4.19 the overall fan speed is lower (which is more silent than 4.18,
with maximum at 112) but the fan spikes to full speed (pwm=255) for 1-2 seconds
which is extremely loud.

The 4.18 and 4.19 kernels are using the same firmware.

[b***@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

--- Comment #1 from Jan Ziak (http://atom-symbol.net) (***@gmail.com) ---
Created attachment 279205
--> https://bugzilla.kernel.org/attachment.cgi?id=279205&action=edit
pwm1-4.18.16

while true; do cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1; sleep 0.1s;
done

[b***@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

--- Comment #2 from Jan Ziak (http://atom-symbol.net) (***@gmail.com) ---
Created attachment 279207
--> https://bugzilla.kernel.org/attachment.cgi?id=279207&action=edit
pwm1-4.19.0

while true; do cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1; sleep 0.1s;
done

[b***@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

--- Comment #3 from Jan Ziak (http://atom-symbol.net) (***@gmail.com) ---
4.18.16:
$ cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_enable
2

4.19.0:
$ cat /sys/class/drm/card0/device/hwmon/hwmon2/pwm1_enable
1

[b***@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

Sergey (***@gmail.com) changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

--- Comment #4 from Sergey (***@gmail.com) ---
I have exactly the same problem with my R9 290X. I tested on the 4.19.6 kernel.
The problem is still present, not how it is not solved. I have to use the 4.18
kernel.x, so as not to damage my graphics card.