Stereoscopic support is broken on firmware newer than 4.19.57

[realizator]

I have 2 cameras system based on RPi Compute Module 3+ Lite.
The latest firmware with working stereoscopic support is 4.19.57 (Buster). Under "stereoscopic support" I mean appropriate work of raspistill and raspivid with "-3d" option.

Commands used for tests:

raspistill -3d sbs -o 1.jpg
raspivid -3d sbs -w 1280 -h 720 -o 1.h264

With all newer versions (4.19.66, 4.19.71 and 4.19.73) we have for both raspivid and raspistill:

• preview is started
• preview image freezes
• adding '-n' option (no preview) has no any effect
• no image or video saved
• system can not be shut down correctly (sudo poweroff), and frozen preview image is always on the screen

[6by9]

Sorry, not had time to investigate this one as yet.
I have just had a daft thought. The regression is in the right time frame to be due to the AWB algorithm change. Could you try running sudo vcdbg set awb_mode 0 BEFORE running raspivid and see if it is happy?

[realizator]

Sorry, not had time to investigate this one as yet.
I have just had a daft thought. The regression is in the right time frame to be due to the AWB algorithm change. Could you try running sudo vcdbg set awb_mode 0 BEFORE running raspivid and see if it is happy?

@6by9 I confirm that sudo vcdbg set awb_mode 0 do the trick!
Both raspistill and raspivid works. Tested on 4.19.76

[6by9]

Thanks. I'll get someone to look at the AWB algorithm again.

[realizator]

Current situation update on 15 of April: stereoscopic support works again out of the box after rpi-update.
It has been tested on both current and "common" firmware, for 4.19.114-v7+ and 5.4.29-v7+ kernels.
Related discussions:
stereoscopic mode tests (RPi forum)
common firmware tests (RPi forum)

[pelwell]

Is there any reason not to close this issue?

[realizator]

Is there any reason not to close this issue?

Ok, I'm closing it. Can not wait for this firmware update will promoted to apt. :-)