What can I do to address mouse cursor vanishing under Linux Mint 21.2 ("Victoria")?

I have a mouse cursor intermittently failing on me. My search did not find anything in questions here, but https://forums.linuxmint.com/viewtopic.php?t=377066 did seem to indicate the same problem, but without pointing out a solution that works on my computer. The recommended solution was to create /etc/X11/xorg.conf.d/20-nouveau-swcursor.conf with content: #--makes mouse cursor re-appear Section Device Identifier Device0 Driver intel Option AccelMethod uxa Option SWCursor on EndSection #-- I changed the Driver to i915 after running inxi -Gx : Graphics: Device-1: Intel 4th Gen Core Processor I

Question by Christos Hayward on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.