From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0
Date: Fri, 06 Dec 2019 03:22:25 +0000 [thread overview]
Message-ID: <bug-201539-2300-fv02bblGv8@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-201539-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=201539
--- Comment #38 from muncrief (rmuncrief@humanavance.com) ---
(In reply to MasterCATZ from comment #37)
> well its neither of those modules
> I should have looked at the files after I scanned for files containing 104000
>
>
> I can not even force run the cards in performance mode anymore with 100% fan
> speed stuck on
>
> if i could just find the setting to tell amdgpu / hwmon / powerplay what
> temp I call hot this would be solved
Here is a slightly modified version of a fan control script, along with the
service to run it, from the Arch Wiki. I don't know what distribution you use
but hopefully this will at least get you started. Unfortunately it doesn't seem
like the kernel devs are interested in fixing this, so after a long time I just
had to use this kludgey solution.
1. Create a file with the following contents named "amdgpu-fancontrol" in
"/usr/local/bin" and make it executable.
--------------- Start amdgpu-fancontrol ---------------
#!/bin/bash
HYSTERESIS=6000 # in mK
SLEEP_INTERVAL=1 # in s
DEBUG=true
# set temps (in degrees C * 1000) and corresponding pwm values in ascending
order and with the same amount of values
TEMPS=( 40000 50000 65000 75000 80000 90000 )
PWMS=( 0 100 140 190 200 255 )
# hwmon paths, hardcoded for one amdgpu card, adjust as needed
HWMON=$(ls /sys/class/drm/card0/device/hwmon)
FILE_PWM=$(echo /sys/class/drm/card0/device/hwmon/$HWMON/pwm1)
FILE_FANMODE=$(echo /sys/class/drm/card0/device/hwmon/$HWMON/pwm1_enable)
FILE_TEMP=$(echo /sys/class/drm/card0/device/hwmon/$HWMON/temp1_input)
# might want to use this later
#FILE_TEMP_CRIT=$(echo /sys/class/hwmon/hwmon?/temp1_crit_hyst)
[[ -f "$FILE_PWM" && -f "$FILE_FANMODE" && -f "$FILE_TEMP" ]] || { echo
"invalid hwmon files" ; exit 1; }
# load configuration file if present
[ -f /etc/amdgpu-fancontrol.cfg ] && . /etc/amdgpu-fancontrol.cfg
# check if amount of temps and pwm values match
if [ "${#TEMPS[@]}" -ne "${#PWMS[@]}" ]
then
echo "Amount of temperature and pwm values does not match"
exit 1
fi
# checking for privileges
if [ $UID -ne 0 ]
then
echo "Writing to sysfs requires privileges, relaunch as root"
exit 1
fi
function debug {
if $DEBUG; then
echo $1
fi
}
# set fan mode to max(0), manual(1) or auto(2)
function set_fanmode {
echo "setting fan mode to $1"
echo "$1" > "$FILE_FANMODE"
}
function set_pwm {
NEW_PWM=$1
OLD_PWM=$(cat $FILE_PWM)
echo "current pwm: $OLD_PWM, requested to set pwm to $NEW_PWM"
debug "current pwm: $OLD_PWM, requested to set pwm to $NEW_PWM"
if [ $(cat ${FILE_FANMODE}) -ne 1 ]
then
echo "Fanmode not set to manual."
set_fanmode 1
fi
if [ "$NEW_PWM" -gt "$OLD_PWM" ] || [ -z "$TEMP_AT_LAST_PWM_CHANGE" ] || [
$(($(cat $FILE_TEMP) + HYSTERESIS)) -le "$TEMP_AT_LAST_PWM_CHANGE" ]; then
$DEBUG || echo "current temp: $TEMP"
echo "temp at last change was $TEMP_AT_LAST_PWM_CHANGE"
echo "changing pwm to $NEW_PWM"
echo "$NEW_PWM" > "$FILE_PWM"
TEMP_AT_LAST_PWM_CHANGE=$(cat $FILE_TEMP)
else
debug "not changing pwm, we just did at $TEMP_AT_LAST_PWM_CHANGE, next
change when below $((TEMP_AT_LAST_PWM_CHANGE - HYSTERESIS))"
fi
}
function interpolate_pwm {
i=0
TEMP=$(cat $FILE_TEMP)
debug "current temp: $TEMP"
if [[ $TEMP -le ${TEMPS[0]} ]]; then
# below first point in list, set to min speed
set_pwm "${PWMS[i]}"
return
fi
for i in "${!TEMPS[@]}"; do
if [[ $i -eq $((${#TEMPS[@]}-1)) ]]; then
# hit last point in list, set to max speed
set_pwm "${PWMS[i]}"
return
elif [[ $TEMP -gt ${TEMPS[$i]} ]]; then
continue
fi
# interpolate linearly
LOWERTEMP=${TEMPS[i-1]}
HIGHERTEMP=${TEMPS[i]}
LOWERPWM=${PWMS[i-1]}
HIGHERPWM=${PWMS[i]}
PWM=$(echo "( ( $TEMP - $LOWERTEMP ) * ( $HIGHERPWM - $LOWERPWM ) / (
$HIGHERTEMP - $LOWERTEMP ) ) + $LOWERPWM" | bc)
debug "interpolated pwm value for temperature $TEMP is: $PWM"
set_pwm "$PWM"
return
done
}
function reset_on_fail {
echo "exiting, resetting fan to auto control..."
set_fanmode 2
exit 1
}
# always try to reset fans on exit
trap "reset_on_fail" SIGINT SIGTERM
function run_daemon {
while :; do
interpolate_pwm
debug
sleep $SLEEP_INTERVAL
done
}
# set fan control to manual
set_fanmode 1
# finally start the loop
run_daemon
--------------- End amdgpu-fancontrol ---------------
2. Create a file with the following contents named "amdgpu-fancontrol.service"
in /etc/systemd/system.
--------------- Start amdgpu-fancontrol.service ---------------
[Unit]
Description=amdgpu-fancontrol
[Service]
Type=simple
ExecStart=/usr/local/bin/amdgpu-fancontrol
[Install]
WantedBy=multi-user.target
--------------- End amdgpu-fancontrol.service ---------------
3. Here's how to enable, disable, and get the status of the fan control
service:
sudo systemctl enable amdgpu-fancontrol
sudo systemctl start amdgpu-fancontrol
sudo systemctl status amdgpu-fancontrol
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next prev parent reply other threads:[~2019-12-06 3:22 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-27 12:32 [Bug 201539] New: AMDGPU R9 390 automatic fan speed control in Linux 4.19 bugzilla-daemon
2018-10-27 12:34 ` [Bug 201539] " bugzilla-daemon
2018-10-27 12:35 ` bugzilla-daemon
2018-10-27 12:45 ` bugzilla-daemon
2018-12-08 7:59 ` bugzilla-daemon
2018-12-21 1:30 ` bugzilla-daemon
2018-12-21 2:16 ` bugzilla-daemon
2018-12-21 15:06 ` bugzilla-daemon
2018-12-21 15:56 ` bugzilla-daemon
2018-12-24 11:55 ` [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20 bugzilla-daemon
2018-12-24 11:55 ` bugzilla-daemon
2018-12-31 9:06 ` bugzilla-daemon
2019-01-05 13:41 ` bugzilla-daemon
2019-03-04 2:17 ` [Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0 bugzilla-daemon
2019-03-09 2:44 ` bugzilla-daemon
2019-04-17 10:37 ` bugzilla-daemon
2019-06-06 11:18 ` bugzilla-daemon
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