According to your log DRI is disabled. Please provide a Xorg log with DRI enabled.

Created attachment 28626 [details]
Xorg log when Dri is enabled

Created attachment 28628 [details]
Xorg conf disabling Dri an Exa acceleration

Created attachment 28631 [details]
Xorg conf with Dri and EXA acceleration method

So it lockups even when Forced to PCI ? Or only when in AGP ? Please also
provide a Xorg log when in AGP mode.

      

Created attachment 28634 [details]
Xorg log running AGP mode

(In reply to comment #5)
> So it lockups even when Forced to PCI ? Or only when in AGP ? Please also
> provide a Xorg log when in AGP mode.
> 
> 
> 

Xorg hang during startup with AGP mode forced. Xorg work during 5 minutes and then hang with PCI mode forced.

(In reply to comment #0)
> Created an attachment (id=28625) [details]
> Xorg log when it crash
> 
> Computer freezes withing minutes when I enabled Dri using Radeon free driver.
> 
> When I'm using my computer (visit web-sites, see my e-mail, etc) xorg work
> correctly during about 10 minutes and then xorg hang and the screen display
> "Out of range" error. I don't use VLC and Compiz. Compiz can run and VLC too. I
> tried upgrading radeon driver to 6.12.99 but the problem wasn't solved. 
> Then I tried editing xorg.conf:
> 
>  - I put Option "AGPMode" "4" in Device section Results: screen display
> "Without signal error"
>  - I change value to 8 Results: screen display "Without signal" error Results:
> screen display "Without signal error"
>  - I change value to 0 Results: screen display "Without signal" error Results:
> screen display "Without signal error"
>  - I change value to 2 Results: screen display "Without signal" error Results:
> screen display "Without signal error"
>  - I change value to 1 Results: screen display "Without signal" error Results:
> screen display "Without signal error"
>  - I delete Option "AGPMode" "4" and I put Option "BusType" "PCI" Results: the
> problem persist
>  - I add Disable "dri2" in Module section Results: the problem persist
>  - I remove Disable "dri2" and I add Disable "dri" 
> 
> --> Results: problem solved but Compiz can't work and others 3D applications.
> 
> Old versions of Ubuntu (8.04 LTS) don't appear this problem
> 
> Additional Information:
> 
> Distribution: Ubuntu Jaunty 9.04
> Graphic card: ATI Radeon 9200 Series
> Xorg version: 1.6.3
> Screen resolution: 1440x900
> 
> Xorg conf now:
> 
> # xorg.conf (X.Org X Window System server configuration file)
> #
> # This file was generated by dexconf, the Debian X Configuration tool, using
> # values from the debconf database.
> #
> # Edit this file with caution, and see the xorg.conf manual page.
> # (Type "man xorg.conf" at the shell prompt.)
> #
> # This file is automatically updated on xserver-xorg package upgrades *only*
> # if it has not been modified since the last upgrade of the xserver-xorg
> # package.
> #
> # Note that some configuration settings that could be done previously
> # in this file, now are automatically configured by the server and settings
> # here are ignored.
> #
> # If you have edited this file but would like it to be automatically updated
> # again, run the following command:
> #   sudo dpkg-reconfigure -phigh xserver-xorg
> 
> Section "Device"
> Identifier "ATI Technologies, Inc. Radeon 9200"
> Driver "radeon"
> Option "BusType" "PCI"
> EndSection
> 
> 
> Section "Monitor"
>         Identifier      "Configured Monitor"
> EndSection
> 
> Section "Modes"
>   Identifier   "Modes[0]"
>   Modeline      "1024x768" 76.16 1024 1080 1192 1360 768 769 772 800
>   Modeline      "1024x768" 64.11 1024 1080 1184 1344 768 769 772 795
>   Modeline      "1440x900" 100.000 1440 1456 1464 1480 900 916 924 940 -hsync
> -vsync
> EndSection
> 
> 
> Section "Screen"
> Identifier "Default Screen"
> Device "Yuraku"
> Monitor "Generic Monitor"
> DefaultDepth 24
> Option "AddARGBGLXVisuals" "True"
> SubSection "Display"
>     Depth      15
>     Modes      "1440x900" "1024x768"
>   EndSubSection
>   SubSection "Display"
>     Depth      16
>     Modes      "1440x900" "1024x768"
>   EndSubSection
>   SubSection "Display"
>     Depth      24
>     Modes      "1440x900" "1024x768"
>   EndSubSection
>   SubSection "Display"
>     Depth      32
>     Modes      "1440x900" "1024x768"
>   EndSubSection
>   SubSection "Display"
>     Depth      8
>     Modes      "1440x900" "1024x768"
>   EndSubSection 
> EndSection
> 
> Section "Extensions"
> Option "Composite" "Enable"
> EndSection
> 
> Section "Module"
> Load "i2c"
> Load "bitmap"
> Load "ddc"
> Load "dbe" #para compiz
> Load "extmod"
> Load "glx" #para compiz
> Load "int10"
> Load "vbe"
> Disable "dri"
> Disable "dri2"
> EndSection
> 
> Section "DRI"
> Group "video"
> Mode 0666
> EndSection
> 
> Section "ServerFlags"
>         Option  "DontZap"       "False"
> EndSection
> 

Update 15/8/2009: I can use AGP Mode without problems disabling Dri

(In reply to comment #8)
> 
> Update 15/8/2009: I can use AGP Mode without problems disabling Dri
> 

The AGPMode option is only relevant when the dri is enabled.  Are you saying your system works now with the DRI enabled?  If so, what AGPMode fixed the problem?

(In reply to comment #9)
> (In reply to comment #8)
> > 
> > Update 15/8/2009: I can use AGP Mode without problems disabling Dri
> > 
> 
> The AGPMode option is only relevant when the dri is enabled.  Are you saying
> your system works now with the DRI enabled?  If so, what AGPMode fixed the
> problem?
> 

No. Dri only run with PCI mode but it work during 5 minutes and then Xorg hang.
Only I can use AGP Mode WITHOUT Dri because it causes X hang during startup.

(In reply to comment #10)
> Only I can use AGP Mode WITHOUT Dri because it causes X hang during startup.
> 

The AGPMode option does nothing when the DRI is disabled.

(In reply to comment #11)
> (In reply to comment #10)
> > Only I can use AGP Mode WITHOUT Dri because it causes X hang during startup.
> > 
> 
> The AGPMode option does nothing when the DRI is disabled.
> 

I don't understand. I can run Xorg correctly with AGP Mode without Dri.

(In reply to comment #12)
> I don't understand. I can run Xorg correctly with AGP Mode without Dri.
> 

The AGPMode option is only relevant when the DRI is enabled since AGP gart is only used when the DRI is enabled.  When the DRI is disabled, the driver ignores the AGPMode option.

(In reply to comment #13)
> (In reply to comment #12)
> > I don't understand. I can run Xorg correctly with AGP Mode without Dri.
> > 
> 
> The AGPMode option is only relevant when the DRI is enabled since AGP gart is
> only used when the DRI is enabled.  When the DRI is disabled, the driver
> ignores the AGPMode option.
> 

OK. But the problem persist.

Alfredo Cabrera, Ubuntu Jaunty reached EOL on October 23, 2010. For more on this, please see https://wiki.ubuntu.com/Releases .

If this is reproducible in a supported release, it will help immensely if you filed a new report with Ubuntu by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information running the following from a terminal:
ubuntu-bug xorg

Also, please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.