Reply To: OSSC sync issues with Amiga 1200

#44558
BuckoA51
Keymaster

    590i is an extremely strange mode that’s for sure and definitely not the default. I’m not surprised your displays can’t handle it.

    Try booting from a fresh copy of Workbench, you can then explore to the hard drive and delete the incompatible monitor driver, this will just reset Workbench back to 288p.