Hi - I'm new to Linux (except for one install 20 years ago) but have some Unix under-the-hood experience.
Yesterday I installed MATE 18.04 from USB stick onto an ancient MacBook Pro 5,2 (2009 or so) as dual-boot. Install went fine, and I quickly solved a couple issues (like a missing network driver).
Today I've discovered that when I suspend MATE (either with the Suspend menu command, or by closing the laptop), when I try to wake it up again, the keyboard backlight will come on (suggesting that MATE has reawakened), but the display will never re-illuminate, making the computer unusable without a hard reboot. (I assume if I connect to an external display I'll be able to power down normally, but I don't have the display adapter for that handy.)
Is this a known issue, and is there a quick fix?