I am getting some extravagant 'infrared-camera-looking' artifacts both on a Youtube livestream and also when I try to play an H.264 coded video in elementary Videos. I tried installing many codec packages including ubuntu-restricted-extras, ffmpeg codecs, and others, with the same result. This is a fresh install of the stable ISO barring the flurry of packages I tried.
There is no issue with opening the container, playing the sound, with no errors, but the video feed is no good. Firefox and mpv work fine, but I want to use the stock OS if I can.
What can I do?
$ uname -a Linux evropa 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
$ sudo lshw -c video *-display description: VGA compatible controller product: Mullins [Radeon R4/R5 Graphics] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 1 bus info: pci@0000:00:01.0 version: 45 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:38 memory:c0000000-cfffffff memory:d0000000-d07fffff ioport:f000(size=256) memory:feb00000-feb3ffff memory:c0000-dffff