Thanks for working with me on this. From the log, I can see that Shotcut thinks everything is good. Otherwise, we would usually see some messages about graphics errors. So that’s a hint. Unfortunately, that doesn’t give us any hints about what is causing the problem.
I’m not sure how much energy you want to put into continued troubleshooting. It would be understandable if you just want to use Shotcut with the experimental GPU mode turned off.
Here are some other ideas to try if you want to keep troubleshooting:
- Try newer/older versions of Shotcut. It is easy to download and run the portable versions from here Releases · mltframework/shotcut · GitHub
- Try Wayland with your onboard graphics to see if the problem is specific to the 3060 hardware/drivers or Wayland. I see you reported that the problem does not occur with X11, but maybe we would learn something.
- Try different versions of the Nvidia drivers. As an example, this user fixed his Nvidia problem by rolling back two driver versions.
I know we have other users using Shotcut with a 3060. But maybe there is something different about your setup.