I run Windows 8 on my ThinkPad T530 (i7-3720QM + NVS 5400M). I want to completely disable adaptive contrast, but the best I could get is disabling it only when my laptop is plugged in. Moreover, if I plug in the power adapter while my system is suspended - it doesn't get detected by Intel drivers and I have to re-plug it in after the wake up. I tried all the relevant options for both AC and battery modes in Intel HD Graphics settings and Windows control panel as well, nothing helps. I didn't have this issue on Windows 7. All drivers are up-to-date.
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