I have some problem about exit xserver and return to text mode.
When I start xserver by 'startx'.
And, when I exit xserver by normal way such as exit or <Ctrl> <Alt> Backspace,
It freeze on last screen of xserver and can't return to text mode.
I can do every thing , that i can do on text mode console , 
after my screen are freeze, only problem is I can't see my text mode console.
I can type and execute command but I can't see my text mode consle. 
I can start xserver again by type 'startx' and it go back to xserver screen 
and I can work every thing normally on xserver screen.

The only way to go back to text mode correctly is halt xserver by some program 
such as 'mplayer -vo xv' (mplayer with wrong video out crash my xserver).
When that program crash my xserver there are some thing in my Xorg.0.log file :

Fatal server error:
Caught signal 11.  Server aborting

(II) AIGLX: Suspending AIGLX clients for VT switch
(II) RADEON(0): RADEONRestoreMemMapRegisters() : 
(II) RADEON(0):   MC_FB_LOCATION   : 0x1fff0000
(II) RADEON(0):   MC_AGP_LOCATION  : 0x27ff2000


But when I exit xserver in normal way, I can't see this infomation in 
Xorg.0.log file.

How can I do ?
Thank you and sorry for my bad english.