Another attempt: I created a second dummy user, and logged in as that user. All screens are now set ok, each in the native resolution. However, any attempt (via "displays") to slightly change layout, order, resolution - results in the same issues of failure and fallback to mirroring. The configuration seems extremely fragile.
Another attempt: I created a second dummy user, and logged in as that user. All screens are now set ok, each in the native resolution. However, any attempt (via "displays") to slightly change layout, order, resolution - results in the same issues of failure and fallback to mirroring. The configuration seems extremely fragile.