Manuel Alfayate Corchete

@popcornmix Another thing to note is that I always use the vc4-hdmi device (ARM-side ALSA driver). I have added that information to the first post.

For devs trying to reproduce this issue locally on Pi OS 64bits: simply build a large project in C++ (not plain C) using `make -j4` In case you still can't...

@popcornmix Tested, but I am sorry to say that it's still happening. Any other experimental firmwares you want me to try, I'll be glad to do so.

@popcornmix: ``` pi@raspberrypi:~ $ vcgencmd version Aug 13 2021 13:03:32 Copyright (c) 2012 Broadcom version 5ffbdf498f77137ac0fbb2f63214eeb3346a3969 (tainted) (release) (start) ``` Also, when display is fine (on an idle system), I...

1 - Before display goes off: ``` pi@raspberrypi:~ $ vcgencmd measure_clock core frequency(1)=500000992 pi@raspberrypi:~ $ vcgencmd measure_clock core frequency(1)=500000992 pi@raspberrypi:~ $ vcgencmd measure_clock core frequency(1)=500000992 pi@raspberrypi:~ $ vcgencmd measure_clock core...

@popcornmix I have removed every `hdmi_*` setting and I am still seeing the issue. It must be annoying, sorry.

@popcornmix You are right, it's only happening with the 1360x758 video mode. I have tried other resolutions via the "video=..." kernel parameter, and the issue doesn't show it's ugly face.

@popcornmix Tried! The issue at 1360x768 (forced in cmdline.txt via the `video=...` parameter) is not appearing anymore. So, if you have no objections, this could be closed. Thanks a lot...

@popcornmix Same HDMI poweroff on throttling is **happening again** in kernel 5.10.76-v8 with `video="HDMI-A-1:1280x720@60"`

> @XECDesign what's the source of our `/usr/share/alsa/cards/vc4-hdmi.conf`? I believe it should contain "interface PCM" following #4311 So, what should I do to bypass DMIX with my config? Or do...