Comment 1986 (Score 1) 204
I first saw X on Apollo workstations in 1986. At that date all the Sun workstations in the lab still ran a windowing system called 'News', if I remember correctly. I saw X on both Suns and Silicon Graphics workstations before 1988, and on DEC Station and RS/6000 machines shortly thereafter. We also had PERQ machines in the lab but I don't believe they ever ran X. In those days I used Xerox 1108 and 1186 machines, which didn't run X.
The first machine I personally owned which ran X was an Acorn R260 running Risc IX (BSD 4.2) in 1990. I switched to Linux at kernel 0.99pl11 in 1993, which is to say more than twenty years ago.
Gosh.