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Direct Rendering Manager has been a part of the kernel since 1999, before the 2.4 release. At that time the term Digital Rights Management as a catch-all for CS

Direct Rendering Manager has been a part of the kernel since 1999, before the 2.4 release. At that time the term Digital Rights Management as a catch-all for CSS, dongles, etc wasn't widespread.

tremon 4y ago
To keep with the theme of the thread: CSS = Content Scramble System, nothing to do with cascading style sheets.