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Graphics Cards

Journeyman III

Kubuntu hardware acceleration video encoding problem

I have a Dell Optiplex 7010 with an Intel i5-3570 CPU and 32GB RAM and has Kubuntu 22.04 installed on it.  Recently I bought an RX 580 graphics card and installed it.  It works fine except I can't get the hardware acceleration for  video encoding to work.  First I tried the AMD drivers, then the open source drivers.  None of the video editing programs I have installed show the hardware acceleration being available.  I tried transcoding a video with Handbrake.  It used 95  to 98% of the CPU.  I then installed the card and Handbrake in Windows.  There I installed the AMD drivers and had no problem getting the hardware acceleration to work.


Does anyone have any idea what might have gone wrong?


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