cannot save a picture in Shutter on a PinePhone Pro

[DrYak]

I am running Sailfish OS 4.5.0.24 on my Pinephone Pro
When I click on the "take a picture" button in Shutter:
the viewfinder freezes and nothing happens (UI is still responsive, I can switch back and forth between camera to restart the view finder).

I get these messages when pressing the button:

[D] onClicked:33 - button clicked
[D] unknown:0 - void CameraProxy::stillCapture(const QString&)
[D] unknown:0 - void CameraProxy::setState(CameraProxy::CameraState) CameraProxy::CameraState(CapturingStill)
[D] unknown:0 - Submitting request for still image 1920x1423-NV12

Nothing is showing up in journalctl at that moment.

My current configuration is:

[0_image]
format=R8
resolution=@Size(3200 2400)

[1_image]
format=NV12
resolution=@Size(3200 2400)

[global]
captureMode=image
disabledCameras=
gridMode=none
storagePath=/run/media/nemo/Ulysse31

[DrYak]

Using the provided test RPM: seems to work.

In my case:

• on the selfie cam: when using NV12 or NV21 format instead of R8, I don't get banding, even at 3200x2400 resolution.
• world cam randomly doesn't work on some boots
• When world cam works, I can manage 3840x2400 in NV12 or NV21 format, though I rarely get bands or weird colors.
• when in R8 format I get vertically squashed and repeating picture (old guy's metaphor: like an analog TV with lost vertical sync)

[DrYak]

Oh, and I have a weird bug, when holding the phone vertically: everything is rotated 90°.

• i.e.: the saved JPEG is still in landscape orientation.
• the view finder displays the camera view in landscape orientation, and zoom to fit the borders.

[DrYak]

I rarely get bands or weird colors.

It's possible that this kernel error message about servicing rkisp's irq coincides with the color bands:
sailfish-on-dontbeevil/kernel-adaptation-pinephonepro#4