I installed Linux Mint two days ago, and it has frozen several times, both after suspend and during normal use. Once it woke up to a black screen. Memory usage and temperatures looked normal.
The laptop is an Acer Nitro V15. I have a graphics driver selected, but I'm new to Linux and not sure what to check next.
Start with Driver Manager and check exactly which graphics driver is selected. The Nvidia open kernel driver is not the same thing as Nouveau, so seeing the word open doesn't necessarily mean you've picked the wrong driver.
You can also run nvidia-smi in a terminal. If it reports an error instead of showing the GPU, share the output. Secure Boot or a module signing issue could be preventing the driver from loading. I'd stick with Mint's Driver Manager rather than installing a driver directly from Nvidia's website.
Does the laptop have both integrated and Nvidia graphics? If so, check Nvidia Settings for PRIME profiles. Switching from On-Demand to Nvidia performance mode is one thing to try, since hybrid graphics can sometimes be involved in desktop freezes.
Also mention whether you're using an external screen. That could help narrow down the graphics side of things.
Low memory usage doesn't rule out faulty RAM. A bootable memory test is worth running if the freezes keep happening, especially since they aren't limited to waking from suspend. You'll need to create a test USB and boot the laptop from it.
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