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#1 2026-10-01 00:22:55

andyturfer
Member
Registered: 2021-01-08
Posts: 110

Need help with hybrid graphics and Firefox

I have a laptop with an AMD Ryzen 7 4800H and Nvidia 1660TI. I have just finished a fresh install of Arch Linux. I also installed the following for the Nvidia GPU:

$ pacman -Q | grep nvidia
libva-nvidia-driver 0.0.18-1
linux-firmware-nvidia 20260916-1
nvidia-open 615.71.09-4
nvidia-utils 615.71.09-1

When I play a video in Firefox, hardware decoding is done on the integrated (Renoir) GPU. This integrated GPU has limited video codecs, so I want to use the Nvidia dedicated GPU instead.

I have tried the following in my /etc/environment:

LIBVA_DRIVER_NAME=nvidia
LIBVA_DRM_DEVICE=/dev/dri/renderD129
MOZ_DRM_DEVICE=/dev/dri/renderD129

but this didn't work.

How can I get Firefox to use the Nvidia GPU for hardware decoding when playing a video?

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#2 2026-10-01 08:55:19

Lone_Wolf
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From: Netherlands, Europe
Registered: 2005-10-04
Posts: 15,455

Re: Need help with hybrid graphics and Firefox

Please post the full outputs of

$ vainfo
$ LIBVA_DRIVER_NAME=nvidia vainfo

Also check https://wiki.archlinux.org/title/Firefo … celeration

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#3 2026-10-01 09:23:19

andyturfer
Member
Registered: 2021-01-08
Posts: 110

Re: Need help with hybrid graphics and Firefox

$ vainfo
Trying display: wayland
vainfo: VA-API version: 1.24 (libva 2.24.0)
vainfo: Driver version: Mesa Gallium driver 26.2.3-arch1.1 for AMD Radeon Graphics (radeonsi, renoir, ACO, DRM 3.64, 7.2.7-arch1-1)
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileHEVCMain10             : VAEntrypointEncSlice
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileVP9Profile0            : VAEntrypointVLD
      VAProfileVP9Profile2            : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc
$ LIBVA_DRIVER_NAME=nvidia vainfo
Trying display: wayland
vainfo: VA-API version: 1.24 (libva 2.24.0)
vainfo: Driver version: VA-API NVDEC driver [direct backend]
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileVP9Profile0            : VAEntrypointVLD
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileHEVCMain12             : VAEntrypointVLD
      VAProfileVP9Profile2            : VAEntrypointVLD
      VAProfileHEVCMain444            : VAEntrypointVLD
      VAProfileHEVCMain444_10         : VAEntrypointVLD
      VAProfileHEVCMain444_12         : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc

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#4 2026-10-01 09:41:26

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,105

Re: Need help with hybrid graphics and Firefox

The additional codecs are VAProfileVP8Version0_3, VAProfileHEVCMain12 and VAProfileHEVCMain444*
Are you sure that's relevant to any videos you want to play in your browser?

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#5 2026-10-01 09:56:40

andyturfer
Member
Registered: 2021-01-08
Posts: 110

Re: Need help with hybrid graphics and Firefox

seth wrote:

The additional codecs are VAProfileVP8Version0_3, VAProfileHEVCMain12 and VAProfileHEVCMain444*
Are you sure that's relevant to any videos you want to play in your browser?

I'm not sure, but even when I completely disable the iGPU in the BIOS, hardware decoding doesn't work, regardless of what video I'm playing (in VLC or Firefox or MPV).

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#6 2026-10-01 10:04:56

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,105

Re: Need help with hybrid graphics and Firefox

What's the output of 

LIBVA_DRIVER_NAME=nvidia mpv someporn.mp4

?

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#7 2026-10-01 10:21:56

andyturfer
Member
Registered: 2021-01-08
Posts: 110

Re: Need help with hybrid graphics and Firefox

seth wrote:

What's the output of 

LIBVA_DRIVER_NAME=nvidia mpv someporn.mp4

?

Sorry, I made a mistake in my previous post. Hardware decoding on the Nvidia dGPU is working on MPV and Haruna and VLC:

$ LIBVA_DRIVER_NAME=nvidia mpv --hwdec=auto test.mp4
● Video  --vid=1  (h264 1280x546 23.976 fps) [default]
● Audio  --aid=1  (aac 2ch 48000 Hz 130 kbps) [default]
[vo/gpu-next/libplacebo] Spent 1491.991 ms creating vulkan device (slow!)
Using hardware decoding (vulkan).
AO: [pipewire] 48000Hz stereo 2ch floatp
VO: [gpu-next] 1280x546 => 1281x546 vulkan[nv12]
AV: 00:00:18 / 01:34:34 (0%) A-V:  0.000
Exiting... (Quit)


$ nvidia-smi dmon
# gpu    pwr  gtemp  mtemp     sm    mem    enc    dec    jpg    ofa   mclk   pclk 
# Idx      W      C      C      %      %      %      %      %      %    MHz    MHz 
    0      6     41      -     10      3      0      5      0      0    405    360 
    0      5     41      -     10      3      0      5      0      0    405    360 
    0      5     41      -     10      3      0      5      0      0    405    300 
    0      6     41      -     12      3      0      5      0      0    405    300 
    0      5     41      -     14      3      0      4      0      0    405    300 
    0      5     41      -     14      3      0      4      0      0    405    300 
    0      5     41      -     15      3      0      5      0      0    405    300 
    0      5     41      -     14      3      0      4      0      0    405    300 
    0      5     41      -     14      3      0      4      0      0    405    300 
    0      5     41      -     14      3      0      4      0      0    405    300 
^C

Hardware decoding works on the Nvidia dGPU for MPV (and the other players) whether I'm in "dGPU only" mode or "hybrid graphics" mode.

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#8 2026-10-01 13:44:49

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 78,105

Re: Need help with hybrid graphics and Firefox

Browsers are a complete problem of their own:
https://wiki.archlinux.org/title/Firefo … celeration - the about:support report will be a necessary first stop.

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