[Bug 1829] New: (Radeon Mobility) Screen flickers and goes blank on IBM Thinkpad R40 in X session

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1829        
   
           Summary: (Radeon Mobility) Screen flickers and goes blank on IBM
                    Thinkpad R40 in X session
           Product: xorg
           Version: 6.8.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Driver/Radeon
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: benramsey at gmail.com


OS: Linux 2.6 (Fedora Core 3)
Hardware: IBM ThinkPad R40 2681-Q6U
Video Card: ATI Radeon Mobility 7500
Monitor: IBM ThinkPad 1400x1050 LCD Panel
xorg-x11 RPM: 6.8.1-12

When booting up in graphical mode, horizontal lines will begin flickering in the
display. The flickering lines become more and more frequent and the display
begins to degrade to the point that it goes blank. However, the light in the LCD
monitor is still on, because there is still a glow; it is just black. 

Pressing Ctrl+Alt+F2 while it is doing this does take me to a full-screen
terminal; however, the flickering still continues until the screen goes
completely blank. I have blindly logged in through the terminal to reboot the
machine.

At the grub boot loader, I can edit the kernel line, adding 'linux 3' to boot
into runlevel 3. This works just fine, but I don't know where to go from here to
find out more information as to why this is happening. I have examined
/etc/X11/xorg.conf, but everything looks good (as far as I know). 

Adding 'nofb' to the kernel line in the boot loader doesn't seem to have any affect.        
   
   
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