On Mon, 24 Mar 2025 11:24:42 -0400, Seyediman Seyedarab wrote:
T495, T495s, and E560 laptops have the FANG+FANW ACPI methods (therefore fang_handle and fanw_handle are not NULL) but they do not actually work, which results in a "No such device or address" error. The DSDT table code for the FANG+FANW methods doesn't seem to do anything special regarding the fan being secondary. Fan access and control is restored after forcing the legacy non-ACPI fan control method by setting both fang_handle and fanw_handle to NULL. The bug was introduced in commit 57d0557dfa49 ("platform/x86: thinkpad_acpi: Add Thinkpad Edge E531 fan support"), which added a new fan control method via the FANG+FANW ACPI methods.
[...]
Thank you for your contribution, it has been applied to my local review-ilpo-fixes branch. Note it will show up in the public platform-drivers-x86/review-ilpo-fixes branch only once I've pushed my local branch there, which might take a while.
The list of commits applied: [1/1] platform/x86: thinkpad_acpi: disable ACPI fan access for T495* and E560 commit: 2b9f84e7dc863afd63357b867cea246aeedda036
-- i.