In the repository. You can replace samsungmfp-driver with samsungmfp-driver-3.00.65 or samsungmfp-driver-legacy, separately or in combination with replacing samsungmfp-data with samsungmfp-data-legacy.
If you were using the Samsung driver in the older version of Ubuntu (either my packages or directly), switching the driver version to an older one may well solve your problem. If you were using foomatic or some other driver at that time, it's less likely but still possible one of the alternate packages will help.
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