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Hardware acceleration in Firefox not wokring with AMD integrated GPU

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I have run into issues trying to use hardware acceleration for video decoding on Firefox 95.0.1 on Ubuntu 21.10, I am using the package downloaded from apt. I have previously set it up on my old laptop with an intel cpu (I7 7th gen) however I have failed on my new laptop with a AMD 5 5500U CPU (it also has a dedicated RX640 GPU). I tried checking if the acceleration works through radeontop, which suggests it isn't, I also tried the answer in this guide which confirmed it is indeed not working.

I followed the guide on setting this up from the ArchWiki to no success, I also used the answers to this post and my compositor is now WebRender and not WebRender Software.

Thank you for your help.

mangohost

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