Yoga 260 - debian thinkpad_ec errors - fixed

I installed tp-smapi-dkms at some point while I was trying to get my yoga 260 working with all its features.

I noticed these messages from dmesg after a reboot.

[   10.557939] thinkpad_ec: loading out-of-tree module taints kernel.
[   10.558304] thinkpad_ec: thinkpad_ec_request_row: arg0 rejected: (0x01:0x00)->0x00
[   10.558305] thinkpad_ec: thinkpad_ec_read_row: failed requesting row: (0x01:0x00)->0xfffffffb
[   10.558307] thinkpad_ec: initial ec test failed
[   10.639393] thinkpad_ec: thinkpad_ec_request_row: arg0 rejected: (0x01:0x00)->0x00
[   10.639394] thinkpad_ec: thinkpad_ec_read_row: failed requesting row: (0x01:0x00)->0xfffffffb
[   10.639397] thinkpad_ec: initial ec test failed

Googling I found this thread from https://github.com/evgeni/tp_smapi/issues/14 that started in 2012 and continued to 2015.

The gist seems to be that I should remove tp-smapi-dkms because those features are not supported by the hardware.

Ran

apt-get purge tp-smapi-dkms

And on reboot the messages have gone away:

 dmesg | grep think
[    2.661884] thinkpad_acpi: ThinkPad ACPI Extras v0.25
[    2.661885] thinkpad_acpi: http://ibm-acpi.sf.net/
[    2.661886] thinkpad_acpi: ThinkPad BIOS N1GET70W (1.49 ), EC unknown
[    2.661886] thinkpad_acpi: Lenovo ThinkPad Yoga 260, model 20FDCTO1WW
[    2.671689] thinkpad_acpi: radio switch found; radios are enabled
[    2.671850] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[    2.671850] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
[    2.675346] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[    2.678097] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one
[    2.681189] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input7