The Packages Are Installed but No Printer Is Configured
The packages do not autodetect printers, you will need to add it manually (using normal desktop environment tools to manage printing).
Printer Lockups When Printing Large Files
In some cases, other printing issues (such as failure to print large graphics) can also be resolved by using a related model. For example, my CLP-550N sometimes freezes when I print files >3-5 MB. To work around this, I have installed a second printer (still pointing to the same physical printer) as the CLP-500N model, which then handles large files fine (albeit with somewhat poorer color quality). This is very trial and error.
Strange Text/Graphics Printing Artifacts
Although this seems to be somewhat less of a problem than it used to be, the Samsung driver may cause weird artifacts when printing text (i.e., poor quality) and occasionally graphics. In this case, you should probably look into alternative approaches (check the alternatives page), try installing your printer as a related model (this is a bit hit-or-miss), or post to the forum in case someone else has solved the problem for your particular model. This seems to primarily occur with some CLP- and CLX- printers.
The Color Balance Is Wrong
I don't actually know what causes this for some people with certain printers. However, in at least some cases, using the driver as installed by this repository seems to work best. In other cases, you might find better results with direct install of the Samsung driver, the Foomatic driver, or a CUPS postscript driver. I suspect it has something to do with exactly which libraries are being invoked, but beyond that it is still a mystery.
My Printer Seems to Be Configured but I Can't Print #1
There is a problem with the libpng12/libpng3 packages (v1.2.44-1 & some earlier versions); an essential link was not included. If there is not a more recent version of the package available through your distribution, install the libpng12-dev package to get the correct link. Alternatively, you can try:
to create the correct link. If none of these solutions fixes the problem (or the link already exists), post to the forum asking for help. This problem will manifest itself as being unable to print, scan, or launch the Samsung Configurator.
My Printer Seems to Be Configured but I Can't Print #2
In some cases, what appears to be a properly installed printer will still fail to print (sometimes, but not always, when the printer is automatically installed by either Foomatic or the Samsung utilities). In that case, use the Configurator or a standard CUPS tool to check the printer properties, ensuring that the correct driver is actually associated with the printer, that the printer is "enabled", and that the printer is "accepting jobs" (the specific method for doing these varies a bit, but the names should apply). If all else fails, simply delete the printer and add it as a new printer again, which will force a reset of all those settings.
My USB Printer Is Inconsistent or Fails to Print and I'm Using an Old Distribution
Occasionally and only in distributions released prior to 2008 (Debian 4.x (Etch), Ubuntu 7.10 (Feisty) and earlier), the USB support will be quirky or broken using these packages. I don't know why this is, but there isn't a good solution due to limitations in the way the Samsung drivers themselves work. Your best bet is to update your distribution.
I've Tried All the Above and I Still Can't Print
If you are using the samsungmfp-driver package, try switching to the samsungmfp-driver-legacy package. Or vice versa if you are currently using the legacy package.