How I fixed my Black Screen after Suspend:
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open terminal and do the following:
sudo pluma /etc/default/grub
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replace the line:
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash’”
With
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash acpi_backlight=vendor acpi_osi=’!Windows 2013’ acpi_osi=’!Windows 2012’”
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Close the file saving, then:
sudo update-grub
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Reboot twice for changes to take effect, then test!!
Hopefully this works for others, this is a Desktop PC