With OS X 10.11 El Capitan no longer receiving security updates1, unsupported but otherwise excellent hardware like the MacBook Pro (15-inch, Mid 2009) can be revitalized with Linux.2
After some false starts with the usual suspects (namely Linux Mint 19 (both Mate & XFCE), Elementary 5, Fedora Workstation 26, and Pop!_OS 18.04 LTS), I decided to give Manjaro XFCE 17 a try after seeing it regularly mentioned in HN comments.
After struggling with previous distros, Manjaro was a dream: boot and shutdown times were halved (at least), the boot splash screen displayed properly (rather than just displaying a black/blank screen like so many others), WiFi and video drivers working right out of the box, and there was no screen flickering or taskbar weirdness. In short, Manjaro presented the most polished experience, from start to finish, of the bunch.
However, during install, Manjaro requires creating a password for the root account, which is subsequently enabled. If you prefer to disable it after installation is complete:
$ sudo passwd --status root root P 10/29/2018 -1 -1 -1 -1 $ sudo passwd --delete --lock root passwd: password expiry information changed. $ sudo passwd --status root root L 10/29/2018 -1 -1 -1 -1
$ su Password: su: Authentication failure
To reenable root:
$ sudo passwd root New password: Retype new password: passwd: password updated successfully $ sudo passwd --status root root P 11/01/2018 -1 -1 -1 -1
Why doesn't Apple just come out with an official macOS support policy? It's clearly and consistently been 3 years from release on modern versions, why not share that with consumers? Speaking of which, why not warn them when they are running an unsupported and unsafe version (something even Microsoft, hardly renowned for its stellar consumer support, did for Windows XP)? Within the last week or so, I've had two different people contact me with problems which turned out to be caused by running OS X 10.7 and OS X 10.8 respectively! See also No more security patches for OS X El Capitan, time to upgrade and Apple has released Mojave 10.14.1 update, and Security Updates for Sierra and High Sierra.
There's also Collin's kind patcher collection of course (macOS Sierra Patcher Tool for Unsupported Macs, macOS High Sierra Patcher Tool for Unsupported Macs, and macOS Mojave Patcher Tool for Unsupported Macs) if you don't mind disabling SIP, limited WiFi support, and trusting third-party, closed source software with deep access.