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Lenovo IdeaPad laptop doesn't wake up after suspend

I have a Lenovo IdeaPad 320 laptop with Debian testing/buster and Linux 4.18.5. When I close the lid and open it again, the screen is black, and I can't do anything. I can't even ctrl-alt-F3 to a vterm. At this point I need to restart the laptop every time I close the lid.

Does anyone have any suggestions how to fix this? I have CONFIG_SUSPEND=y set in my kernel.