On Friday 08 June 2018 12:40:32 Andy Shevchenko wrote: > On Fri, Jun 8, 2018 at 11:12 AM, Pali Rohár <pali.rohar@xxxxxxxxx> wrote: > > Hi! I just found out that thinkpad_acpi.ko is not automatically loaded > > on new ThinkPad T480s. Is there any reason for it? Manually calling > > modprobe thinkpad_acpi is working fine, but I would expect that it > > should be loaded automatically. > > > > Here is dmesg output after loading it manually: > > > > thinkpad_acpi: ThinkPad ACPI Extras v0.25 > > thinkpad_acpi: http://ibm-acpi.sf.net/ > > thinkpad_acpi: ThinkPad BIOS N22ET34W (1.11 ), EC unknown > > thinkpad_acpi: Lenovo ThinkPad T480s, model 20L7S03000 > > thinkpad_acpi: radio switch found; radios are enabled > > thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver > > thinkpad_acpi: Disabling thinkpad-acpi brightness events by default... > > thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked > > thinkpad_acpi: Standard ACPI backlight interface available, not loading native one > > Did you run depmod -a? > Is it present in the output? > > There are three ways of enumeration as far as I can see from the driver's code: > - by short driver name "tpacpi" (not likely our case) > - by DMI matching (only for old BIOS'es) > - by ACPI ID > > So, does the ACPI contain one of the listed IDs? > > #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" > #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" > #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" > ? DSDT contains only LEN0268. And so I found reason. I'm using Debian which has only 4.9 kernel and LEN0268 identifier was added in git commit a3c42a467a254a17236ab817d5c7c6bc054e4f84 for 4.10. -- Pali Rohár pali.rohar@xxxxxxxxx
