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Ubuntu 18.04.1 - suspend - how's it supposed to operate?
August 17, 2018
Edited: August 19, 2018
November 24, 2022
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You don’t hold the power button until the suspend option appears.
You push the power button once and the window panel menu appears.
Then you click and hold the power icon on the window panel.
Optionally you can hold the Alt key when hitting the power icon (the down arrow) in the top bar, not the physical button.