Comment 6 for bug 217182

Wacom drivers and screen output rotation should work in pair in both cases:
rotate screen output and digitizer input when user set screen rotation in screen resolution settings;
auto-rotate screen output and digitizer input when convertable laptop is converted into tablet mode.
This bug-report concerns the second case.
There's another bug-report, that concerns the first case: https://bugs.launchpad.net/ubuntu/+source/wacom-tools/+bug/288231

Here's link to a bug-report for IBM/Lenovo that contains auto-rotation scripts with 3D accelerometer support: https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/159026