civic9 / thinkpad_acpi.2ndfan.patch Goto Github PK

It seems once manual control has been engaged, it's not possible to hand control back over to the hardware. Neither by writing to 2 to pwm*_enable, nor by writing level auto to /proc/acpi/ibm/fan, nor by letting the watchdog try to do it.

Must be a bug somewhere.

Hey,

first: I appreciate your work and want to donate!(?)

But I have trouble to install this on Ubuntu 20.x . Is there any chance for a step by step Guide? I'm not this much into Linux kernels and this Fans on my 3,4k Lenovo (P73) is annoying me.... I simply dont know how to patch this kernel.

thank you very much!

Hi,

I saw that you posted this patch on ibm-acpi-devel. Very good!

However, kernel devs generally don't accept patches if they aren't in their preferred format. I would suggest resubmitting to the list, but paying attention to the idiosyncrasies. See e.g. this comment.

On behalf of myself and other Thinkpad users, thank you!

Please, add P53 in your patch :) If I understand correctly (according to this https://forums.mydigitallife.net/threads/oa-2-x-slic-oemcert-collection.5952/page-84#post-1559468), it's code is also N2N. I can do all the testings needed. Thanks in advance!

Reading sysfs will show the same values for pwm1* and pwm2*. Writing works fine independently tho. This is mentioned in the code, but I want to explicitely mention it in an issue report too.

hello,
I have a p1 gen 3, dual fans. Can you add it? I can provide info but I don;t know where to look for the prefix

The P73 also has two fans. It's identifier is N2N.
Please add it to your patch.
Thanks for your work on this.

Without this patch, fan1 could be controlled as a tp_fan and was able to run at its full speed (~5000 RPM) by setting the level to "level full-speed".

After applying the patch, the fans are seen as pwm fans and their maximum value is 255, which corresponds to ~4500 RPM.

Is there a way to either use the fans as tp_fans instead of pwm or somehow force their speed over their level 255?