For me it looks like a problem in Gutenprint itself. I recommend to file a bug upstream, on http://gutnprint.sf.net/. Interim solution would be to modify the PPD file of the C50 which comes with Ubuntu, letting it be based on the PPD for the C42.
For me it looks like a problem in Gutenprint itself. I recommend to file a bug upstream, on http:// gutnprint. sf.net/. Interim solution would be to modify the PPD file of the C50 which comes with Ubuntu, letting it be based on the PPD for the C42.