Ts_calibrate doesn't work with "toradex_vf_4.4-next" last update (VF61)

The “ts_calibrate” was running fine with kernel “toradex_vf_4.4-next” updated until 2016-10-04 (commit https://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_vf_4.4-next&id=ce276eb006022d69005dd8bd8ccb8a3d9c6430d5). But it isn’t running after kernel is updated with version 2016-10-10 (commit https://git.toradex.com/cgit/linux-toradex.git/commit/?h=toradex_vf_4.4-next&id=1b2ee55592956cf08325a26eb51da8f2ce212e64).

Just tried it with the latest kernel (top of branch, as of now, f19821707202f59faa7c0e5f8332baa496da41eb) on a Colibri VF61, it seems to work fine here. In what way does it not work (not displayed, calibration process works but the correction is not applied …?). Do you get any error messages or stack traces?

root@colibri-vf:~# ts_calibrate

open fbdevice: No such file or directory


I tried with the latest kernel and the problem related in the previous comment continues.