because i will allways get a out of range monitor witch i cant fix
Try to explicitly specify the hsync and vsync ranges for your monitor in xorg.conf.
The manual for the monitor may help, otherwise try random values until it works
Also, if the open-source driver works (which it should, if you try a recent kernel), the Xorg log will probably contain suitable information (either the correct ranges, a set of working values, or a working modeline).
QFT, Radeon HD 5570 works well. I don't know about the 5830, though, but it should do just fine.
Also the 5570 is being used with Debian Squeeze.
Works well, how? At what?
It's really confusing. Some card owners claim A and some claim B.
With the FGLRX / binary driver, I wish I could have a list or a diagram of what 'works' and what that means, explicitly.
For e.g., Gaming: then the what works/what doesn't ... native games, Windows games with Wine... etc. I think Phoronix has good articles for this so this doesn't confuse me too much.
My priority is video, 2D and 3D, though. The 'up-to-date' status for the Evergreen cards sounds like these areas are all problem areas throughout. Tearing occurs or video glitches with 2D. Having Compiz or using KDE makes things worse? These are all problems that seem to have occurred since Catalyst 10.6 since I recall reading similar complaints.
How come ATI neglects these problems to such degree? It can't be just concentration on workstations.
catalyst do not support 10.10 anylonger because of xserver1.9
catalyst only can handle 1.8
10.10 is a *development/testing* distribution at present (it's not even due until October 2010 at the earliest; the beta is not even a week old), which is why Catalyst 10.8 won't (and shouldn't) support it.
If you want closed-source driver support, then run 10.04.1 (which supports Catalyst back to 10.6 just fine); I won't run 10.10 *because* I have R8xx (Evergreen; Cedar in particular) and thus need the closed-source drivers.