Hi, people! Great forum, it's big pleasure to speak about my favorite scifi writer (St.Lem, course ;-)
As for Eden Russian movie - unfortunately not... and ever no attempts to do it now and in the past. That's strange for me too, because Eden (IMHO - one of the best novels of early Lem) is very suitable for movie production... but alas!
BTW, except Solaris by Andrei Tarkovsky (of course you know this movie) there was Russian-Polish movie "Doznanie pilota Pirksa" ("Inquiry" from the Pirx stories).
Bye, Andrei