Your system uses an i586 CPU or a CPU that does not have the 'cmov' extension. All packages were built with optimizations requiring i686 as the minimal architecture. It is not possible to upgrade your system to a new Ubuntu release with this hardware.
Mae dy system yn defnyddio CPU i586 neu CPU sydd heb estyniad 'cmov'. Crewyd y pecynnau fel eu bod angen o leiaf adeiladaeth i686 cyn eu bod yn gweithio. Nid yw'n bosib uwchraddio dy system i fersiwn newydd o Ubuntu gyda'r caledwedd hwn.