From Fedora Project Wiki

Firefox Hardware acceleration on Fedora

Firefox on Fedora supports hardware acceleration on Linux so let's look how to configure it and diagnose potential issues. This guide is adjusted for Fedora only and may not work for stock Mozilla binaries or other distros.

Web page rendering

Accelerated web page rendering is supported on both X11 and Wayland backends via WebRender.

Please note that Firefox requires a GPU with support for OpenGL 3.2 or newer or GLES 3.0 or newer to enable hardware acceleration (Source and further info). You can check your hardware using glxinfo | grep "profile version" for OpenGL and eglinfo | grep version for GLES.

You can check hardware acceleration state at about:support page, look at Compositing row. If there's WebRender, you're running on hardware. If there's WebRender (software) you're on non-accelerated backend.

WebRender Firefox setup

Web page rendering on Wayland

Hardware acceleration should work out-of-the-box on Wayland. If not please file a bug for it.

Web page rendering on X11

X11 backend can tun in two modes - EGL and XGL. You should be on EGL unless you're running NVIDIA proprietary drivers.

Video decoding

Hardware accelerated video decoding (for video playback or for WebRTC) is available on Intel/AMD via VA-API for both X11(EGL) and Wayland. Since firefox-101.0.1-4 package it's enabled by default for Intel/AMD users.

You can check VA-API acceleration state at about:support page, look at VAAPI row. If there's available by default, you're running on hardware.

Correct VA-API setup

You can disable it at about:config page setting media.hardware-video-decoding.enabled to false.

You may install enhanced-h264ify Firefox extension to disable non-accelerated video formats.

Configure VA-API Video decoding on AMD

Accelerated video decoding works well on AMD as free drivers are available. Free video formats (VP8, VP9, AV1) should be accelerated out of the box. You can install H.264 VA-API support it by these steps:

Configure VA-API Video decoding on Intel

Accelerated video decoding works well on most Intel GPUs as free drivers are available. There are two[1] drivers for Intel cards, libva-intel-driver (provides i965_drv_video.so) and intel-media-driver (iHD_drv_video.so). Currently, Firefox works with either libva-intel-driver or intel-media-driver.

Refer to this Intel chipsets video features table on Wikipedia to determine which codecs your hardware supports.

You can enable VA-API on Intel by these steps:

Video decoding on NVIDIA

Firefox does not support hardware acceleration on NVIDIA, due to the NVIDIA drivers' lack of a usable VA-API interface.

Troubleshooting

  • Verify you're running on HW accelerated backend (WebRender) under Wayland or X11/EGL at about:support.
  • Run vainfo on terminal to verify that VA-API works.
  • Run Firefox on terminal with MOZ_LOG="PlatformDecoderModule:5" env variable. It produces a playback and decode log with VA-API / ffmpeg details.
  • VA-API is also used for WebRTC (video conferencing like Google Meet, Zoom, Bluejeans). If you see any video artifacts you can disable VA-API for it. At about:config page set media.navigator.mediadatadecoder_vpx_enabled to false and restart browser.

Video encoding

Hardware accelerated video encoding (for WebRTC for instance) is not supported/implemented in Firefox, no matter which preference you set at about:config page.

  1. There's also libva-intel-hybrid-driver, but that only adds support for VP8 encoding and VP9 decoding with selected chips.
  2. Ice Lake or newer