rrodrigez wrote:Hello,
yesterday I reinstalled my system and upgraded from Kubuntu 20.04.1 to Kubuntu 20.04.2 LTS.
After the installation, I installed the video wallpaper, as always but this time it did not work, the video.mp4 was black
So i updated QT and Gstreamer, installed a lot of packages but the video.mp4 remained black. I saw that the CPU was busy and the video was playing, but the screen remained black. I tried it with a .webm file and it worked.
I wonder what the problem could be, on the old system (20.04.1) everything worked fine, what has changed now?
Then I thought that the graphics driver could be wrong, so I downloaded and installed the latest AMD-GPU firmware from http://www.AMD.com and now everything works again.
The Ubuntu AMD-GPU firmware is faulty and the Gstreamer shows black picture when playing mp4 files.
Solution: Download the AMD-GPU firmware from http://www.AMD.com and install it (overwride all config files).

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