Thank for answer. David Holm send me xorg.conf and it works!
But there some warnings:
(WW) RADEON: no matching device section for instance (BusID PCI:1:8:1)
(WW) ***invalid IO allocation *** b: 0x1000 e: 0x10ff
FATAL: module radeon not found
[drm] failed to load kernel module "radeon"
(EE) RADEON (0): [dri] DRIScreenInit failed. Disabling DRI
And it not started until i comment section "Extension" with next errmsg:
Section "Extensions" parse error on line 68 - extenions not valid section name.
Gnome now works great, but w/o sound :(
wintel free