For the record of the Lenovo AIO hardware, the bug is gone with BIOS Version E4KT15AUS and Ubuntu drm-intel-next build version 3.1.0-997-generic #201111170422.
For the record of the Lenovo AIO hardware, the bug is gone with BIOS Version E4KT15AUS and Ubuntu drm-intel-next build version 3.1.0-997-generic #201111170422.