Re: 302.11 driver only allows native resolution settings of laptop DFP
The issue is not that the EDID is not properly read, but that the driver is no longer injecting a bunch of modes that your monitor doesn't actually support into the mode pool. Now, the modes listed in the mode pool are the real modes being driven by the hardware, and any scaling is configured via the ViewPortIn, ViewPortOut, and/or Transform properties of the MetaMode, or via the xrandr transform options.
However, we do understand that it's not particularly easy right now to configure scaled modes. We're working on improvements to the driver to make that easier in the future.