just want to say I’m running Manjaro sway on my raspberry pi 400 using the rc kernal and mesa git with the following changes to the config.txt:
#enable vc4
dtoverlay=vc4-km4-v3d-pi4
max_framebuffers=2
#overclock
force_turbo=1
over_voltage=15
arm_freq=2350
gpu_freq=800
v3d_freq=800
and firefox 84.0 with layers.acceleration.force-enabled set to true in the about:config, h264ify with 60fps blocked and performance is absolutely nuts. I am absolutely pleased with how it’s handling youtube and what this machine is pulling off.
Note that my overclock settings are really pushing rpi400 to its limits so if you want to adapt similar options USE AT YOUR OWN RISK!!
—glxgears test run in the default window size @ 1920x1080
$ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
8962 frames in 5.0 seconds = 1792.285 FPS
9068 frames in 5.0 seconds = 1813.500 FPS
8981 frames in 5.0 seconds = 1796.108 FPS
8905 frames in 5.0 seconds = 1780.945 FPS
9118 frames in 5.0 seconds = 1823.481 FPS
If anyone has any other optimization suggestions please let us know!