Question: in the stock firmware for the Beryl AX (GL-MT3000) from GL.iNet, the fan is automatically enabled when the internal temperature reaches a certain threshold (you could customize this threshold with a slider). Is the fan still automatically enabled in the vanilla OpenWRT version? I did some digging through version 23.05.2 and found a driver installed for a fan, but the unit doesn't get very hot on vanilla even under load so I haven't been able to find out. Thanks in advance. I've never had an OpenWRT unit that had or needed a fan.
Is the fan recognised in the system log and/or kernel log?
I have not taken my Beryl AX out of it's box as of yet.
Only 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 for fan and [ 0.067436] pwm-mediatek 10048000.pwm: clock: top fail: -517 for pwm
This package came installed: package: kmod-hwmon-pwmfan
Kernel module for PWM controlled FANs
however the package appears to be empty as it is 0kb
I'm not quite sure what all this means: but I think I found something:
root@GL-MT3000:~# sensors
mt7915_phy0-isa-18000000
Adapter: ISA adapter
temp1: +43.0°C (high = +120.0°C, crit = +110.0°C)
cpu_thermal-virtual-0
Adapter: Virtual device
temp1: +51.6°C (crit = +125.0°C)
mt7915_phy1-isa-18000000
Adapter: ISA adapter
temp1: +43.0°C (high = +120.0°C, crit = +110.0°C)
pwmfan-isa-0000
Adapter: ISA adapter
fan1: 0 RPM
you should be able to configure that with pwmconfig
Hi
I have several routers running with OpenWrt, one of them is the GL-MT3000 which is a great device, it comes with a customized OpenWrt version and I can even control the fan it has using GL's Web GUI.
I recently installed vanilla OpenWrt on that device, does the fan works automatically? It seems like it isn't working anymore on vanilla OpenWrt, this is the first OpenWrt router with a fan I've ever had. I just want to avoid heat damage on it. So far I love the vanilla version for this mode and I want to stay there. Thanks for any information or suggestion
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you are the second post in the last few days asking the same question:
I wonder the same thing
@41blessings @sTeve51
I can confirm the fan does work on vanilla 23.05.2.
We had a cold snap and I turned on my desk heater.....
It was blowing onto the MT3000 making it toasty hot.
When I turned the heater off I could hear a very quiet whirring sound and it took me a minute to identify that it was the MT3000's fan running. It quickly changed to an on then off of about 2 seconds on 2 seconds off, then 5 seconds off 2 seconds on etc until it stopped altogether, approx timing 
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This is good to know! Thanks for finding out!
It was purely accidental
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