When using vanilla OpenWrt, does the cooling fan works on a Beryl AX MT3000? What’s the GL recommendation to control the cooling fan while using vanilla OpenWrt? I’ve read about it and I saw that controlling it manually would reduce the fan’s life. I’d like to know is there’s an automatic and effective way to control it. And in case it doesn’t work I guess it can damage the router if it gets too hot.
I also have questions about how to monitor the fan speed, control it from the open OpenWrt firmware
In general, what is the fan operation algorithm? Does it work autonomously with its own temperature sensor?
On pure OpenWrt, the fan works, I can hear it when I put it to my ear
There they describe how to regulate the temperature on the official firmware and how to control the fan on pure OpenWrt?
what package should be installed for MT3000 (Beryl AX)?
root@GL-MT3000:~# opkg list-installed | grep fan
kmod-gl-sdk4-fan - 5.4.211+git-2024.274.10104-fb625f2-1
kmod-hwmon-pwmfan - 5.4.211-1
so I'd say install kmod-gl-sdk4-fan and kmod-hwmon-pwmfan
# ubus call system board
{
"kernel": "5.15.167",
"hostname": "BerylAX",
"system": "ARMv8 Processor rev 4",
"model": "GL.iNet GL-MT3000",
"board_name": "glinet,gl-mt3000",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "23.05.5",
"revision": "r24106-10cc5fcd00",
"target": "mediatek/filogic",
"description": "OpenWrt 23.05.5 r24106-10cc5fcd00"
}
}
root@BerylAX:/sys/class/hwmon# opkg list-installed | grep fan
kmod-hwmon-pwmfan - 5.15.167-1
root@BerylAX:/sys/class/hwmon# opkg list | grep fan|awk '{print $1}'
fish
kmod-hwmon-g762
kmod-hwmon-gpiofan
kmod-hwmon-pwmfan
mksh
How to manage it now?
for one, v24 is available, you can install that right from glinet,
I'm guessing you got it directly from openwrt?
As far as controlling the fan goes, I tested this with v24 openwrt from glinet,
you can test settings with:
/etc/init.d/gl_fan stop
gl_fan -v -t 45 -i 4 -d 20
otherwise set it persistently across reboot;
uci set glfan.@globals[0].temperature='45' #target temp in c
uci set glfan.@globals[0].integration='4' #fan ramping
uci set glfan.@globals[0].differential='20' #polling time in seconds
uci commit glfan
/etc/init.d/gl_fan restart
use a temp higher than 45 if you dont want it constantly running around 2500rpm
1 Like
You have firmware from GL.iNet v24
I want to understand how to control the fan from the stock OpenWrt firmware taken from the official website
https://firmware-selector.openwrt.org/?version=23.05.5&target=mediatek%2Ffilogic&id=glinet_gl-mt3000
If you have firmware v24 from GL.iNet
please show the output of the command
ubus call system board
and the contents of the file /etc/init.d/gl_fan
cat /etc/init.d/gl_fan
root@GL-MT3000:~# ubus call system board
{
"kernel": "5.4.211",
"hostname": "GL-MT3000",
"system": "ARMv8 Processor rev 4",
"model": "GL.iNet GL-MT3000",
"board_name": "glinet,mt3000-snand",
"release": {
"distribution": "OpenWrt",
"version": "21.02-SNAPSHOT",
"revision": "r15812+902-46b6ee7ffc",
"target": "mediatek/mt7981",
"description": "OpenWrt 21.02-SNAPSHOT
root@GL-MT3000:~# cat /etc/init.d/gl_fan
#!/bin/sh /etc/rc.common
START=99
USE_PROCD=1
PROG=/usr/bin/gl_fan
get_fan_config() {
config_get enabled $1 enabled
config_get sysfs $1 sysfs
config_get div $1 div
config_get temperature $1 temperature
config_get proportion $1 proportion
config_get integration $1 integration
config_get differential $1 differential
config_get debug $1 debug
}
start_service() {
config_load glfan
config_foreach get_fan_config globals
[ "$enabled" != "1" ] && exit
[ -n "$sysfs" ] && PROG="$PROG -T $sysfs"
[ -n "$div" ] && PROG="$PROG -D $div"
[ -n "$temperature" ] && PROG="$PROG -t $temperature"
[ -n "$proportion" ] && PROG="$PROG -p $proportion"
[ -n "$integration" ] && PROG="$PROG -i $integration"
[ -n "$differential" ] && PROG="$PROG -d $differential"
[ "$debug" = "1" ] && PROG="$PROG -v"
procd_open_instance
procd_set_param respawn
procd_set_param stderr 1
procd_set_param command $PROG
procd_close_instance
}
stop_service() {
kill -9 $(pgrep -f '/usr/bin/gl_fan') 2>/dev/null
echo 0 > /sys/class/thermal/cooling_device0/cur_state
please upload this file: /usr/bin/gl_fan
Just extract it from any firmware image you need?
I have a clean OpenWrt 23.05.5 installed + additional packages that are not in the official repository
I can simply flash 21.xx on the GL.iNet website for a couple of files
but then, when I return to 23.05.5, I will be exhausted from setting everything up again
I have not yet dealt with unpacking squashfs images
They are just tgz files, so you can unpack them using 7-Zip or tar itself.
I extract the whole files on my windows PC just in one directory, search through the path tree for whatever I need and done - really easy.
https://fw.gl-inet.com/firmware/mt3000-open/rc/openwrt-mt3000-4.6.6-op24-1014-1728893369.bin
Figured it out, and indeed 7zip unpacks the kernel and root image
the entire file system is inside root
1 Like
I don't understand which kernel module should be responsible for the fan
I'm almost sure that it is not in the stock OpenWrt firmware (from the openwrt.org website)
please show the output of the command lsmod
# cat /sys/class/thermal/cooling_device0/cur_state
2
And this path is missing, which means the module is not loaded.
/sys/class/fan/fan_speed
The official repository contains the following packages
kmod-hwmon-g762
kmod-hwmon-gpiofan
kmod-hwmon-pwmfan
But which one is suitable for Beryl AX?
I doubt it, I don't want to install everything at once
How to full disable fan on vanyl openwrt ?
OpenWrt 24.10.0 (Vanilla)
Install package
opkg update
opkg install kmod-hwmon-pwmfan
and reboot router
Disable fan
/bin/echo '0' > /sys/class/hwmon/hwmon2/pwm1_enable
Enable fan
/bin/echo '1' > /sys/class/hwmon/hwmon2/pwm1_enable
Control fan
/bin/echo '255' > /sys/class/hwmon/hwmon2/pwm1
/bin/echo '127' > /sys/class/hwmon/hwmon2/pwm1
/bin/echo '63' > /sys/class/hwmon/hwmon2/pwm1
255 = max
127 = middle
63 = minimal (silent)
2 Likes
Hi, I have a Chinese clone of GL-MT3000 (Huasifei WH3000 / Fudy MT3000) with immortalWRT 24.10.0 installed. I understand this might look totally offtop here but since the device is almost the same as Beryl AX (only 1GB of RAM and 8GB eMMC storage, everything else is the same) I am trying to be able to control it's fan. Installed kmod-hwmon-pwmfan, and rebooted, but when I try to edit /sys/class/hwmon/hwmon2/pwm1_enable it gives me a permission denied error. Maybe you know how to solve it?
Hi,
The Fudy TR3000/Huasifei WH3000 is a clone of the Cudy TR3000.
The Beryl AX only has 512mb RAM and 256 NAND.
I'd recommend posting on the actual Openwrt forum