u-3 fan start up trip point adust

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u-3 fan start up trip point adust

Unread postby phaseshifter » Wed May 16, 2018 2:22 am

i am trying to get the fan on my U-3 to spinn up constantly..
have tried modding some files but i run into the point that even as root user it will not allow me to change this trip point..any help

...thank`s..phase
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Re: u-3 fan start up trip point adust

Unread postby rooted » Wed May 16, 2018 2:25 am

Try this

Code: Select all
 zcat /proc/config.gz | grep TRIPS


Looking for

Code: Select all
 CONFIG_THERMAL_WRITABLE_TRIPS=y
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Re: u-3 fan start up trip point adust

Unread postby phaseshifter » Wed May 16, 2018 3:03 am

um ok somewhat confused with your answer...if i find that how do i modify it...
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Re: u-3 fan start up trip point adust

Unread postby rooted » Wed May 16, 2018 3:04 am

It would require a kernel recompile if not enabled, it may not exist.

I don't have a U3
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Re: u-3 fan start up trip point adust

Unread postby phaseshifter » Wed May 16, 2018 3:43 am

ok yeah from searching it looks like a kernel re-compile..i`ll do it via the 5 volt rail hardwire it...
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Re: u-3 fan start up trip point adust

Unread postby rooted » Wed May 16, 2018 5:09 am

rooted wrote:Try this

Code: Select all
 zcat /proc/config.gz | grep TRIPS


Looking for

Code: Select all
 CONFIG_THERMAL_WRITABLE_TRIPS=y


If it exists but isn't enabled it will say.

Code: Select all
 CONFIG_THERMAL_WRITABLE_TRIPS is not enabled

or not set, can't remember.
Last edited by rooted on Wed May 16, 2018 7:52 am, edited 1 time in total.
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Re: u-3 fan start up trip point adust

Unread postby phaseshifter » Wed May 16, 2018 7:30 am

no the code does not exist so i just hard wired it to the 5 volt rail..for me to compile a kernel..well i am not at the point with compiling that it is easy 4 me yet..
i did search the topic a fair bit and most of what i had read consisted of patches and recompiling..the hard wire works fine 4 me..
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Re: u-3 fan start up trip point adust

Unread postby rooted » Wed May 16, 2018 7:32 am

Yep, nothing wrong with that. I don't understand half the stuff you say about hardware, we all have our strong and weak points.
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Re: u-3 fan start up trip point adust

Unread postby stefben » Fri Sep 28, 2018 3:16 pm

Hi guy,

I have my cpu fan (U3) that is broken.
I can change it with a XU4 cpu fan?

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Re: u-3 fan start up trip point adust

Unread postby odroid » Fri Sep 28, 2018 3:47 pm

Yes, they are compatible.
But we are still selling U3 fan cooler too.
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