Arch Linux

Description:

Media playback (like YouTube, HLS Streams in Shinobi etc.) shows strange artifacts with default hw-acceleration setting in Epiphany (on-demand). Disabling it solves the issue.
Screenshot in attachment.


lshw -c video output:
*-display
description: VGA compatible controller
product: Picasso
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:05:00.0
version: c1
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
configuration: driver=amdgpu latency=0
resources: irq:59 memory:c0000000-cfffffff memory:d0000000-d01fffff ioport:1000(size=256) memory:d0500000-d057ffff

Package informations:
Epiphany: 3.38.2.-1
Webkit2gtk: 2.30.4-2
gst-inspect-1.0 --version
gst-inspect-1.0 version 1.18.2
GStreamer 1.18.2
https://www.archlinux.org/

Installed plugins:
local/gst-plugins-bad 1.18.2-1
Multimedia graph framework - bad plugins
local/gst-plugins-bad-libs 1.18.2-1
Multimedia graph framework - bad
local/gst-plugins-base 1.18.2-1
Multimedia graph framework - base plugins
local/gst-plugins-base-libs 1.18.2-1
Multimedia graph framework - base
local/gst-plugins-good 1.18.2-1
Multimedia graph framework - good plugins
local/gst-plugins-ugly 1.18.2-1
Multimedia graph framework - ugly plugins
local/gst-libav 1.18.2-1
Multimedia graph framework - libav plugin
local/gstreamer-vaapi 1.18.2-1
Multimedia graph framework - vaapi plugin

Also reported bug in upstream but they can't help me without debug logs (gstreamer is compiled without debug in arch): https://bugs.webkit.org/show_bug.cgi?id=220141