"Testing" is not "beta" ... "Testing" is "Testing". This is not "regular" software terminology.
For example my "Testing" repository can be "old" for Ubuntu users. But anyway it is more complex topic.
My issiue from first post is directed to amd catalist beta driver (stable driver also would not work).
And yes now i'm using radeon driver with radeon module, because I still need X server, it is dedicated for Radeon HD cards.
And this is description for this driver
R100, RV100, RS100, RV200, RS200,
RS250, R200, RV250, RV280, RS300, RS350, RS400/RS480, R300, R350, R360,
RV350, RV360, RV370, RV380, RV410, R420, R423/R430, R480/R481,
RV505/RV515/RV516/RV550, R520, RV530/RV560, RV570/R580,
RS600/RS690/RS740, R600, RV610/RV630, RV620/RV635, RV670, RS780/RS880,
RV710/RV730, RV740/RV770/RV790, CEDAR, REDWOOD, JUNIPER, CYPRESS,
HEMLOCK, PALM, SUMO/SUMO2, BARTS, TURKS, CAICOS, CAYMAN i ARUBA.