After upgrading from Ubuntu 11.10 to 12.04, I have printing issues with Lexmark x340 :
Printing from Libre Office or a pdf file: if the document is more complex (longer than 2 pages), the first page is printed correctly, followed by several of pages with some hieroglyphics. This can only be stopped by switching the printer off and then on again.
In case of simple documents, the first print usually comes out OK. Then, if another print is requested, the story begins again: unwanted characters, on many pages.
To overcome this problem, I now do the following: print a document, switch the printer off and back on, print again, and so on...
Does anyone has a fix?