[kwijibob]

It's not on that wikipedia page but in older Linux desktops using XFree86 windows system (before X.Org) there were always warnings that certain monitor settings could break your monitor hardware permanently.

I was always fearful of breaking an expensive fat monitor.

[voxadam]

It was absolutely possible to fry old fixed-frequency monitors by specifying an improper HorizSync in your XF86Config.[0] Fortunately, for most of us fixed-frequency CRTs had been largely replaced by more modern multisync monitors[1] before we were out of diapers.

[0] https://retrocomputing.stackexchange.com/questions/6614/can-...

[1] https://en.wikipedia.org/wiki/Multisync_monitor