ACPI: Unable to dock!

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http://www.linuxquestions.org – Hello I have problem with resume from suspend mode in x220 lenovo thinkpad. I made couple of tests, and i reached a conclusion, that problem is occurring when i suspend laptop with plugged in usb wifi adapter alfa awus 036nha, and when i resume with still plugged in adapter. When i do not plug anything - it's just fine. When i suspend with usb adapter, and disconnect it while in suspend mode - resumming is fine too. When i have plugged in usb adapter and i resumming i see black screen with: Code: ACPI: Unable to dock! _ But sometimes i see just underscore. (I read somewhere to not to pa (HowTos)