You are not logged in.
Hello.
The 5.1.8 version of the Kernel seems to cause a regression to automatic control of a fan.
After a reboot, everything works normally, but after waking up from suspend, it spins at full speed.
Here's the output of "sensors" after suspend:
jc42-i2c-0-1c
Adapter: SMBus I801 adapter at 1c00
temp1: +33.2°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
jc42-i2c-0-1a
Adapter: SMBus I801 adapter at 1c00
temp1: +32.0°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
jc42-i2c-0-18
Adapter: SMBus I801 adapter at 1c00
temp1: +31.5°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
adt7473-i2c-4-2e
Adapter: nvkm-0000:02:00.0-bus-0003
in1: +3.00 V (min = +0.00 V, max = +2.99 V)
+3.3V: +3.33 V (min = +2.96 V, max = +3.61 V)
fan1: 4393 RPM (min = 0 RPM)
fan2: 0 RPM (min = 0 RPM)
fan3: 0 RPM (min = 164 RPM)
temp1: +57.5°C (low = +70.0°C, high = +85.0°C)
(crit = +88.0°C, hyst = +88.0°C)
Board Temp: +50.2°C (low = +20.0°C, high = +60.0°C)
(crit = +100.0°C, hyst = +100.0°C)
temp3: +57.2°C (low = +80.0°C, high = +105.0°C)
(crit = +107.0°C, hyst = +103.0°C)
fscsyl-i2c-0-73
Adapter: SMBus I801 adapter at 1c00
+12V: +11.87 V
+5V: +5.07 V
Vbat: +3.17 V
+3.3V: +3.36 V
in4: +5.73 V
+3.3V-Aux: +3.35 V
CPU Fan: 720 RPM (div = 4)
System FAN2: 840 RPM (div = 4)
System FAN3: 720 RPM (div = 4)
System FAN4: 1680 RPM (div = 4)
PSU Fan: 1380 RPM (div = 4)
CPU Temp: +32.0°C (high = +127.0°C)
temp2: +32.0°C (high = +127.0°C)
Super I/O Temp: +39.0°C (high = +70.0°C)
Northbridge Temp: +41.0°C (high = +70.0°C)
temp6: +73.0°C (high = +110.0°C)
temp7: +31.0°C (high = +65.0°C)
jc42-i2c-0-1d
Adapter: SMBus I801 adapter at 1c00
temp1: +32.5°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
jc42-i2c-0-1b
Adapter: SMBus I801 adapter at 1c00
temp1: +32.2°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
jc42-i2c-0-19
Adapter: SMBus I801 adapter at 1c00
temp1: +32.8°C (low = +0.0°C) ALARM (HIGH, CRIT)
(high = +0.0°C, hyst = +0.0°C)
(crit = +0.0°C, hyst = +0.0°C)
nouveau-pci-0200
Adapter: PCI adapter
GPU core: +1.05 V (min = +1.05 V, max = +1.18 V)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +51.0°C (high = +80.0°C, crit = +100.0°C)
Core 1: +50.0°C (high = +80.0°C, crit = +100.0°C)
Core 2: +51.0°C (high = +80.0°C, crit = +100.0°C)
Core 3: +50.0°C (high = +80.0°C, crit = +100.0°C)The fan in question is "fan1" under the "adt7473-i2c-4-2e" category, showing 4400 RPM. After a reboot it shows 760 RPM. Judging from the other values in its category, I'm guessing its a motherboard fan.
I can temporarily fix the problem by writing to "/sys/devices/pci0000:00/0000:00:03.0/0000:02:00.0/i2c-4/4-002e/pwm1", bit if I reset pwm1_enable to "2" (automatic mode), the fan speed goes to 0 and the temperatures under its category start rising. I guess I could set up Fancontrol, but I consider that a pointless workaround of a problem, that wasn't there in Kernel 5.1.7 or earlier.
Excerpt from "dmidecode", if it helps:
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.5 present.
System Information
Manufacturer: FUJITSU
Product Name: CELSIUS M470-2
Version:
Wake-up Type: Power Switch
Family: Not Specified
Base Board Information
Manufacturer: FUJITSU
Product Name: D2778-C1
Version: S26361-D2778-C1
Asset Tag: Not Specified
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Not Specified
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0Last edited by ao333333 (2019-06-24 20:09:00)
Offline
On my motherboard here, the value of pwm1 is used as some sort of multiplier when pwm1_enable is set to the auto value. To restore the original auto behavior after manual experiments, I also need to save and restore the original value of pwm1, not just set pwm1_enable to 2.
I wonder if you could just blacklist the kernel module that provides that "adt7473-i2c-4-2e" device. But then you couldn't check on that fan speed anymore so you wouldn't know what happens to it after a suspend.
Last edited by Ropid (2019-06-25 10:17:37)
Offline
I see this post is quite old but i got the same problem.
I have an GTX 1080 and use wayland, swaywm and the nouveau driver. Kernel is 5.4.2-arch1-1
Anyone found a solution?
Edit: not my cpu fan is at max speed but my graphic card fan.
Last edited by heavyjoe (2019-12-21 21:16:18)
Offline