[HTC One X] Thömy:
You need to capture the logcat during a boot with a PC. The one you posted isn't very helpful and only 6 seconds long. The other logcat seems to be okay but does not contain anything useful about the sensors.

The output of the "dumpsys sensorservice" might also be interesting. Mine for reference.

root@endeavoru:/ # dumpsys sensorservice
Sensor List:
Panasonic 3-axis Acceleration sensor | The Panasonic Android Open Source Project | 0x00000000 | maxRate= 100.00Hz | no batching support | last=< -0.1, 1.8, 10.0>
Panasonic 3-axis Magnetic Field sensor | The Panasonic Android Open Source Project | 0x00000001 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Panasonic Orientation sensor | The Panasonic Android Open Source Project | 0x00000002 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Panasonic Gyroscope sensor | The Panasonic Android Open Source Project | 0x00000006 | maxRate= 833.33Hz | no batching support | last=< 0.0, 0.0, 0.0>
Panasonic Rotation Vector | The Panasonic Android Open Source Project | 0x00000003 | maxRate= 833.33Hz | no batching support | last=< 0.0, 0.0, 0.0, 0.0, 0.0>
Panasonic Linear Acceleration | The Panasonic Android Open Source Project | 0x00000004 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Panasonic Gravity | The Panasonic Android Open Source Project | 0x00000005 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
CM3602 Proximity sensor | Capella Microsystems | 0x00000012 | on-demand | no batching support | last=< 0.0, 0.0, 0.0>
CM3602 Light sensor | Capella Microsystems | 0x00000011 | on-demand | no batching support | last=<160.0, 0.0, 0.0>
Rotation Vector Sensor | AOSP | 0x5f726f76 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0, 0.0, 0.0>
Gravity Sensor | AOSP | 0x5f677276 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Linear Acceleration Sensor | AOSP | 0x5f6c696e | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Orientation Sensor | AOSP | 0x5f797072 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
Corrected Gyroscope Sensor | AOSP | 0x5f636779 | maxRate= 833.33Hz | no batching support | last=< 0.0, 0.0, 0.0>
Gyroscope Bias (debug) | AOSP | 0x5f676273 | maxRate= 100.00Hz | no batching support | last=< 0.0, 0.0, 0.0>
9-axis fusion disabled (0 clients), gyro-rate= 200.00Hz, q=< 0, 0, 0, 0 > (0), b=< 0, 0, 0 >
9 h/w sensors:
handle=0x00000000, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000000, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000001, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000001, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000002, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000002, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000006, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000006, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000003, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000003, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000004, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000004, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000005, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000005, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000012, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000012, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
handle=0x00000011, active-count=0, batch_period(ms)={ }, selected=-0.0 ms
handle=0x00000011, active-count=0, batch_timeout(ms)={ }, selected=-0.0 ms
Active sensors:
1048576 Max Socket Buffer size
0 active connections