Nothing happen when I write into EC

[davidegori]

I've installed isw correctely, if I try:
sudo isw -b on
actually it enable CoolerBoost.
I've also checked with:

$ sudo ls -l /sys/kernel/debug/ec/ec0/io
-rw------- 1 root root 0 31 gen 00.18 /sys/kernel/debug/ec/ec0/io

If I write EC with:
sudo isw -w MY_SECTION
nothing change also if I've set cpu_fan_speed_0 = 100 and previously was a low percentage.

If I change only a single value into EC with:
sudo isw -s address_of_cpu_fan_speed_0 100
as the previous case, I can't notice differences.

Do you know how to resolve?

Laptop: MSI modern 15 A11M-217XIT (1552EMS1)
OS: Manjaro Nibia 20.2.1

[ShiweiJin]

Have you sovled this problem? I truned off the secure boot but still cannot increase the Fan speed after I write into EC.

[davidegori]

I'm sorry for the late answer.
Yes, after some attempts I figured out how to fix this problem.
I have installed Windows and changed the fan profiles with the official MSI tool. Looking at the EC values was not difficult to check how MSI tool works. When a personalized profile is set, you can see that the value 0xd4 switch to 64. that's the only difference from MSI G laptop EC Rosetta
I was able to notice.
After some attempts, I convinced myself that it is enough to set the value of 0xd4 to make it works.
Now I have added to autostart the following lines:

isw -w 1552EMS1
isw -s 0xd4 64 

Where 1552EMS1 is the profile here.
Now everything seems to work properly even if I have updated the BIOS a couple of times (since I have found this trick).
Tell me if this works properly also for you (please specify your BIOS update).