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[GH-ISSUE #622] ec-probe gives out just zeroes #556
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Originally created by @lastmetroid on GitHub (Jan 19, 2019).
Original GitHub issue: https://github.com/hirschmann/nbfc/issues/622
I tried using the ec-probe tool on a Dell XPS 15 9570 but it just gives out empty readings, even if started as admin:
C:\Program Files (x86)\NoteBook FanControl>ec-probe dump
How come so? Is there a way to fix this? Would be nice if you could give a standalone zip btw not to have NBFC to install to get this tool. Also give a hint in the FAQ what it means, if it gives out zeroes and why (not compatible?).
@Mezun commented on GitHub (Feb 5, 2019):
Hey
did you find a solution for that? I have the same laptop and not satisfied with the dell power manager.
the tool shows -2147483648°C for cpu temp. Just slightly of
@lastmetroid commented on GitHub (Feb 5, 2019):
@Mezun Yes, thankfully, since 2 weeks, there is a solution:
http://forum.notebookreview.com/threads/dellfancmd-%E2%80%93-tool-to-enable-manual-custom-control-of-the-laptop-fans.827106/
Also autor of HwInfo included the EC register hack in latest HwInfo beta:
https://www.hwinfo.com/forum/Thread-REQUEST-Write-to-EC-manual-fan-control-on-Dell-XPS-laptops
It just works up to bios 1.6.0 though correctly.
@Mezun commented on GitHub (Feb 5, 2019):
ok damn then maybe i should downgrade my bios because 1.7.0 is shitty since my mainboard switch and updating its not acting right.
Even with undervolting i have the 5 sec fan switch in battery mode
thinking about liquid metaling it
@lastmetroid commented on GitHub (Feb 5, 2019):
@Mezun the fan issues with 1.7.0 are "normal" and Dell is Dell and ignorant and said "it is working as intended". Read about it here:
https://www.reddit.com/r/Dell/comments/akngpy/incompetent_dell_devs_answer_to_bios_170_fan/
In simple words: The Dell morons changed it with 1.7.0 that ANY dGPU activity causes a 9 second fan spin, even a 100ms poll, and the dGPU is accessed randomly all over Windows 10 (mostly a bug in Windows / Ms Hybrid Blah / Optimus).
If you deactivate the dGPU in device manager, the fan spins go away.
@Mezun commented on GitHub (Feb 5, 2019):
yeah i read about this but im not quite sure if a bios downgrade is so safe
@lastmetroid commented on GitHub (Feb 5, 2019):
@Mezun yes it is... Ive downgraded / upgraded from 1.7 to 1.6 to 1.7 to 1.6 now 10 times or so over the past 2 weeks. I think right now to test staying on 1.7.0 and just activate the dGPU when I need it and then deactivate it again afterwards:
https://forums.geforce.com/default/topic/1097428/geforce-mobile-gpus/on-the-fly-dgpu-driver-on-off-usable-under-windows-/
I have no experiences though so far, how stable this is, to toggle GPU drivers on/off under Windows without reboot. So far it seems to work fine.
@Mezun commented on GitHub (Feb 5, 2019):
ok i think i will downgrade then
thank you for your advise
@github-actions[bot] commented on GitHub (Nov 19, 2019):
This issue is stale because it has been open more than 180 days with no activity. If nobody comments within 7 days, this issue will be closed
@lastmetroid commented on GitHub (Nov 19, 2019):
Ok 👌