Comment 3 for bug 1867655

Like this:

InstallationDate: Installed on 2016-02-11 (1495 days ago)

I know it doesn't seem that long ago, and kudos to keeping your system running that long, but it's really near the end of life, and there is no telling what has been done since. Maybe if you have a spare drive you can install a new version of Linux Mint (I find their distro to be far superior nowadays) or whichever modern distro you choose on a spare drive, update it and see if it makes a difference. At least then you don't have to reformat your whole system and can test. I would just say boot from a flash drive, but I am sure you will have more issues trying it like that.