@quicksilver said in Can no longer select video mode after update:
@psyke83 thanks it looks like it's working again. Something I've noticed in general though is that I have multiple listings for the same resolution/refresh rate. On previous pi models there were usually just the different CEA modes listed. Is this difference because of the different drivers/hardware that the pi 4 utilizes?
Yes, we query the available modes via the kernel modesetting API, which doesn't distinguish between CEA or DMT modes. If you look carefully at the duplicates in your list, however, you'll see that there are differences beyond the resolution and refresh rate, such as the aspect ratio encoding, horizontal/vertical sync polarity, etc.
Technically it's still possible to use tvservice for querying and changing modes on RPI4, but if you do change the mode, the underlying KMS framebuffer subsystem will not be aware of the change. This would mean that your monitor would be set to the correct mode, but the applications themselves would detect the framebuffer/refresh to still be set to the original resolution and thus show a cropped image, etc.
