Raspberry Pi 3b+ Fake KMS not listed

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Asked 1 year, 6 months ago

Modified 1 year, 6 months ago

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I've been trying to follow tutorials on enabling hardware accelerated video decoding for my Raspberry Pi 3b+, such as this one:

They all seem to want me to select a GL Driver called "Fake KMS", but even after installing the various packages mentioned, it's not listed for me.

I'm using the latest version of Raspberry Pi OS, with updates installed.

cat /proc/device-tree/soc/firmwarekms@7e600000/status returns disabled
cat /proc/device-tree/soc/v3d@7ec00000/status returns okay
chrome://gpu shows Video Decode: Software only: Hardware acceleration disbled

How can I make this option avaiable, or otherwise do what is needed to enable GPU video decoding in chromium?

asked Nov 14, 2021 at 6:54

Jordan Morris

1034 bronze badges

I assume that link points to instructions for older release of Pi OS - if you have the latest (bullseye) release - then you should have dtoverlay=vc4-kms-v3d in your config.txt
– Bravo
Nov 14, 2021 at 8:54
@Bravo I did this and restarted, and it doesn't seem to have affected anything.
– Jordan Morris
Nov 14, 2021 at 10:25
So, which version of Raspberry Pi OS do you have installed?
– Bravo
Nov 14, 2021 at 11:35
@Bravo 11 (bullseye)
– Jordan Morris
Nov 14, 2021 at 12:10
oh, and you're reading a video acceleration page for pi4 but you don't have a pi4
– Bravo
Nov 15, 2021 at 1:27

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