Widevine Content Decryption Module not updated. Sites that use this module will not playback (page will load but video does not start). Unable to find any useful resolution suggestion from web searching. All found relates to Facebook, YouTube or similar. My problem is not with these sites. Everything works find there. FF information: Version 54.0 Build ID 20170613235745 User Agent Mozilla/5.0 (X11; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0 OS Linux 4.11.6-1-ARCH WebGL 1 Driver Renderer X.Org -- Gallium 0.4 on AMD CAICOS (DRM 2.49.0 / 4.11.6-1-ARCH, LLVM 4.0.0) WebGL 1 Driver Version 3.0 Mesa 17.1.3 WebGL 2 Driver Renderer X.Org -- Gallium 0.4 on AMD CAICOS (DRM 2.49.0 / 4.11.6-1-ARCH, LLVM 4.0.0) WebGL 2 Driver Version 3.3 (Core Profile) Mesa 17.1.3 Widevine ver 1.4.8.903 Update 2017June02