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Search found 16 matches

by bitonic
Sun Dec 24, 2017 1:25 pm
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

void unknown_communication(void) { printf("Sending unknown commands\n"); set_0x6C(0x33); outb(0x06, 0x68); } What do we know about this function? nothing, i just replicated what the windows app does. for some parts of the code i can take i guess, but i have no clue what this does, hence the name.
by bitonic
Sat Dec 23, 2017 8:42 pm
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

Then I must do something wrong way. I set all the data in ThermalTable, run the .exe file, and it works OK... for a short while (5-10mins). I've set everything to keep my system silent until it reaches 60C, and then pump out the fan with speed that ommits the low-pitch noise. EDIT: it seems that th...
by bitonic
Sat Dec 23, 2017 6:12 am
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

Does this 51nb app work for you well? I can't make it work under Windows. Did nnot try out the Linux version yet. yes, it works great. the only problem is that you have to restart it after resume, but the x62-fancontrol-manager.py script i added takes care of that. i have it start up on boot using ...
by bitonic
Thu Dec 14, 2017 5:03 am
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

Is it possible to read the fan speed? nope, i just reverse-engineered the windows app -- it was quite clear from the binary what code sets the speed and reads the temperature. sadly the windows application doesn't include anything regarding reading the fan speed. somebody with more familiarity with...
by bitonic
Mon Dec 11, 2017 6:13 am
Forum: 51nb and other modded Thinkpads
Topic: high pitched fan vibration at low fan speeds on the x62
Replies: 3
Views: 1430

Re: high pitched fan vibration at low fan speeds on the x62

looking around the fan the x62 shipped with seems to be FRU 45N4782, with one of the screw holes and the clip thing sawed off.
by bitonic
Mon Dec 11, 2017 5:48 am
Forum: 51nb and other modded Thinkpads
Topic: high pitched fan vibration at low fan speeds on the x62
Replies: 3
Views: 1430

Re: high pitched fan vibration at low fan speeds on the x62

ok, i've taken it apart the laptop and the high-pitched noise seems to come from the fan motor -- i get the high pitched noise even if i take out the fan and leave just the motor running. so i'll probably replace the fan. i've ordered the x200 sunon maglev fan, and will try to replace it. for future...
by bitonic
Wed Nov 29, 2017 11:59 pm
Forum: 51nb and other modded Thinkpads
Topic: high pitched fan vibration at low fan speeds on the x62
Replies: 3
Views: 1430

high pitched fan vibration at low fan speeds on the x62

Hi, I can finally control the fan speed on my x62 ( https://forum.thinkpads.com/viewtopic.php?f=80&t=125041 ). However, when the fan is spinning slowly (around level 20 when I control the speed using my program) they emit a very high pitched noise, I think due to some vibration. I can solve the prob...
by bitonic
Tue Nov 21, 2017 1:02 pm
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

ok, i've written a small script that survives wakeups from suspend -- see readme. the script works great so i doubt i'll update anytime soon, but contributions are welcome!
by bitonic
Tue Nov 21, 2017 4:01 am
Forum: 51nb and other modded Thinkpads
Topic: X62 problems, quirks, and fixes
Replies: 171
Views: 37698

Re: X62 problems, quirks, and fixes

now onto the next problem: the fan emits a very high frequency vibration at low speeds (which i'm hearing for the first time since it was always at high speed before)
by bitonic
Tue Nov 21, 2017 3:41 am
Forum: 51nb and other modded Thinkpads
Topic: X62 problems, quirks, and fixes
Replies: 171
Views: 37698

Re: X62 problems, quirks, and fixes

vavet, I've added a comment explaining the values: https://github.com/bitonic/x62-fancontrol/blob/5b562a17fb7f7c216b62e344b7f25525ea402280/x62-fancontrol.c#L155 . I still don't really know what they _mean_, but that's the effect they have on the fan speed. Given the PWM terminology one would think t...
by bitonic
Mon Nov 20, 2017 2:54 pm
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

Great work, thank you! An idea: On my 3rd batch X62s, the fan is pretty much perfect, but when the temperature is low, sometimes the fan turns on at a high speed for a second or so. After monitoring the temperature for longer periods of time, I think this is due to occasional erroneous temperature ...
by bitonic
Mon Nov 20, 2017 11:49 am
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

Re: fan control for x62 on linux

ok, i've added a "manager" mode, you can run it with: sudo ./x62-fancontrol manager This is already _much better_ than the default, the laptop is silent most of the time and the fans are not as jumpy. I can tweak the daemon more to wait a bit between switching levels but this is probably enough for ...
by bitonic
Mon Nov 20, 2017 8:49 am
Forum: 51nb and other modded Thinkpads
Topic: X62 problems, quirks, and fixes
Replies: 171
Views: 37698

Re: X62 problems, quirks, and fixes

ok, I did end up reverse engineering it, see here: viewtopic.php?f=80&t=125041
by bitonic
Mon Nov 20, 2017 8:49 am
Forum: 51nb and other modded Thinkpads
Topic: fan control for x62 on linux
Replies: 15
Views: 3527

fan control for x62 on linux

Hi, I've reverse engineered the windows utility posted on 51nb so that I could control the fan speed on linux: https://github.com/bitonic/x62-fancontrol . I don't know what the fan speed numbers represent exactly, but it seems to work. It also reads the temperature in the same way that the windows u...
by bitonic
Sun Nov 19, 2017 4:22 am
Forum: 51nb and other modded Thinkpads
Topic: X62 problems, quirks, and fixes
Replies: 171
Views: 37698

Re: X62 problems, quirks, and fixes

I used the utility linked above and it does work to control the fan; you just need to run it from a command line as admin after editing ThermalTable.txt. The settings I am currently using are what I got from the 51nb forums: 00,0,0,0, 35,30,20,0, 45,40,1,0, 56,53,10,0, 60,58,20,0, 65,62,40,0, 73,70...
by bitonic
Fri Nov 17, 2017 10:45 pm
Forum: 51nb and other modded Thinkpads
Topic: X62 problems, quirks, and fixes
Replies: 171
Views: 37698

Re: X62 problems, quirks, and fixes

Hi, Can anybody with a 4th batch confirm that he was able to get the fan to not go up and down like crazy? I got mine a few days ago and I've tried everything to no avail. The only thing that seems to make it go silent is the ec0718.bin bios -- but then the fan does not turn on until the temperature...

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