Comment 36 for bug 181176

Without the NoDCC "work-around", Xorg 1.5.2 goes into an infinite CPU loop.
With NoDCC, Xorg 1.5.2 locks up the machine hard, requiring a power cycle.

Copying X.Org X Server 1.4.0.90 and the associated /usr/lib/xorg directory
from Ubuntu 8.04 to the Ubuntu 8.10 machine allows the NoDCC work-around to
work without locking up the machine hard.

Toshiba Laptop "Satellite" Model PS181C-00CET
01:00.0 VGA compatible controller: Trident Microsystems CyberBlade/i1 (rev 5d)

O/S Ubuntu 8.10

X.Org X Server 1.5.2
Release Date: 10 October 2008
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.24-19-server i686 Ubuntu
Current Operating System: Linux toshiba-laptop 2.6.27-11-generic #1 SMP Thu Jan 29 19:24:39 UTC 2009 i686
Build Date: 24 October 2008 08:00:16AM
xorg-server 2:1.5.2-2ubuntu3 (<email address hidden>)
 Before reporting problems, check http://wiki.x.org
 to make sure that you have the latest version.
Module Loader present

------------ xorg.conf with work-around --------
# this works for X.Org 1.4.0.90 (copied from Ubuntu 8.04)
# this locks up the machine hard for X.Org 1.5.2 (default in Ubuntu 8.10)
Section "Device"
 Identifier "Configured Video Device"
 Option "NoDDC"
EndSection

Section "Monitor"
 Identifier "Configured Monitor"
 VendorName "Toshiba"
        ModelName "Unknown"
        HorizSync 31.5-90
        VertRefresh 60
 Option "NoDDC"
 Option "DPMS" "True"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Monitor "Configured Monitor"
 Device "Configured Video Device"
EndSection