Oh, I know that AMD has done a lot to help out the open ecosystem (and even interop with the closed parts - heck, I got their closed AMDGPU-PRO Linux drivers to

Oh, I know that AMD has done a lot to help out the open ecosystem (and even interop with the closed parts - heck, I got their closed AMDGPU-PRO Linux drivers to work on the PS4 without any patches, even though that's not a GPU variant offered elsewhere, because the amdgpu userspace/kernel interface is just so well designed). I recommend AMD for Linux users; lately, they've been doing good work while Intel drivers bitrot, especially on older hardware. I'm just quite confused as to how HDCP factors into all that. HDCP really is just a hardware block that's part of the video output which you enable or disable; there is a bunch of nonsense associated with PAVP and other such stuff on Windows, but none of that should really matter to Linux, nor should whatever way HDCP is implemented affect other features of the open drivers. AMD certainly do deserve credit for their work on Linux support, I just find your specific HDCP story quite strange :-)