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I have just installed Ubuntu 20.04 on my new Lenovo Thinkpad X1 Carbon Gen7. Most things work fine. However, closing the lid suspends the computer (as expected), but opening the lid does not resume. If I press the power button quickly, nothing happens. If I hold the power button for about one second, it resumes. I would like to make it resume just by opening the lid. How do I accomplish this?

cat /proc/acpi/wakeup

has the output

LID   S4    *enabled   platform:PNP0C0D:00

so this thread didn't help me.

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