I have an old IBM Thinkpad with a Silicon Motion chip that has the same problem.  Running Xubuntu 8.04/8.10 the computer boots, X appears to hang (all I get it a blank screen), with no way to access the virtual terminal via the CTRL-ALT-F1 key sequence.

00:02.0 VGA compatible controller [0300]: Silicon Motion, Inc. SM712 LynxEM+ [126f:0712] (rev a0)

# 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      "Configured Video Device"
EndSection

Section "Monitor"
        Identifier      "Configured Monitor"
EndSection

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

Xorg.0.log

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 joyride 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 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
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Dec  8 21:01:43 2008
(==) Using config file: "/etc/X11/xorg.conf"
(==) No Layout section.  Using the first Screen section.
(**) |-->Screen "Default Screen" (0)
(**) |   |-->Monitor "Configured Monitor"
(**) |   |-->Device "Configured Video Device"
(==) Automatically adding devices
(==) Automatically enabling devices
(==) No FontPath specified.  Using compiled-in default.
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
        Entry deleted from font path.
(==) FontPath set to:
        /usr/share/fonts/X11/misc,
        /usr/share/fonts/X11/100dpi/:unscaled,
        /usr/share/fonts/X11/75dpi/:unscaled,
        /usr/share/fonts/X11/Type1,
        /usr/share/fonts/X11/100dpi,
        /usr/share/fonts/X11/75dpi,
        /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType
(==) ModulePath set to "/usr/lib/xorg/modules"
(II) Cannot locate a core pointer device.
(II) Cannot locate a core keyboard device.
(II) The server relies on HAL to provide the list of input devices.
        If no devices become available, reconfigure HAL or disable AllowEmptyInput.
(WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
(II) Open APM successful
(II) Loader magic: 0x81d9a40
(II) Module ABI versions:
        X.Org ANSI C Emulation: 0.4
        X.Org Video Driver: 4.1
        X.Org XInput driver : 2.1
        X.Org Server Extension : 1.1
        X.Org Font Renderer : 0.6
(II) Loader running on linux
(++) using VT number 7

(--) PCI:*(0@0:2:0) Silicon Motion, Inc. SM712 LynxEM+ rev 160, Mem @ 0x0e000000/0
(II) System resource ranges:
        [0] -1  0       0xffffffff - 0xffffffff (0x1) MX[B]
        [1] -1  0       0x000f0000 - 0x000fffff (0x10000) MX[B]
        [2] -1  0       0x000c0000 - 0x000effff (0x30000) MX[B]
        [3] -1  0       0x00000000 - 0x0009ffff (0xa0000) MX[B]
        [4] -1  0       0x0000ffff - 0x0000ffff (0x1) IX[B]
        [5] -1  0       0x00000000 - 0x00000000 (0x1) IX[B]
(II) LoadModule: "extmod"

(II) Loading /usr/lib/xorg/modules/extensions//libextmod.so
(II) Module extmod: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        Module class: X.Org Server Extension
        ABI class: X.Org Server Extension, version 1.1
(II) Loading extension SHAPE
(II) Loading extension MIT-SUNDRY-NONSTANDARD
(II) Loading extension BIG-REQUESTS
(II) Loading extension SYNC
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XC-MISC
(II) Loading extension XFree86-VidModeExtension
(II) Loading extension XFree86-Misc
(II) Loading extension XFree86-DGA
(II) Loading extension DPMS
(II) Loading extension TOG-CUP
(II) Loading extension Extended-Visual-Information
(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation
(II) Loading extension X-Resource
(II) LoadModule: "dbe"

(II) Loading /usr/lib/xorg/modules/extensions//libdbe.so
(II) Module dbe: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        Module class: X.Org Server Extension
        ABI class: X.Org Server Extension, version 1.1
(II) Loading extension DOUBLE-BUFFER
(II) LoadModule: "glx"

(II) Loading /usr/lib/xorg/modules/extensions//libglx.so
(II) Module glx: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        ABI class: X.Org Server Extension, version 1.1
(==) AIGLX enabled
(==) Exporting typical set of GLX visuals
(II) Loading extension GLX
(II) LoadModule: "freetype"

(II) Loading /usr/lib/xorg/modules//fonts/libfreetype.so
(II) Module freetype: vendor="X.Org Foundation & the After X-TT Project"
        compiled for 1.5.2, module version = 2.1.0
        Module class: X.Org Font Renderer
        ABI class: X.Org Font Renderer, version 0.6
(II) Loading font FreeType
(II) LoadModule: "record"

(II) Loading /usr/lib/xorg/modules/extensions//librecord.so
(II) Module record: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.13.0
        Module class: X.Org Server Extension
        ABI class: X.Org Server Extension, version 1.1
(II) Loading extension RECORD
(II) LoadModule: "dri"

(II) Loading /usr/lib/xorg/modules/extensions//libdri.so
(II) Module dri: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        ABI class: X.Org Server Extension, version 1.1
(II) Loading extension XFree86-DRI
(II) Scanning /usr/share/xserver-xorg/pci directory for additional PCI ID's supported by the drivers
(II) Matched siliconmotion from file name siliconmotion.ids
(==) Matched siliconmotion for the autoconfigured driver
(==) Assigned the driver to the xf86ConfigLayout
(II) LoadModule: "siliconmotion"

(II) Loading /usr/lib/xorg/modules/drivers//siliconmotion_drv.so
(II) Module siliconmotion: vendor="X.Org Foundation"
        compiled for 1.5.0, module version = 1.6.0
        Module class: X.Org Video Driver
        ABI class: X.Org Video Driver, version 4.1
(II) Silicon Motion: driver (version 1.6.0) for Silicon Motion Lynx chipsets:
        Lynx, LynxE, Lynx3D, LynxEM, LynxEM+, Lynx3DM, Cougar3DR
(II) Primary Device is: PCI 00@00:02:0
(WW) Falling back to old probe method for siliconmotion
(--) Assigning device section with no busID to primary device
(--) Chipset LynxEM+ found
(II) resource ranges after xf86ClaimFixedResources() call:
        [0] -1  0       0xffffffff - 0xffffffff (0x1) MX[B]
        [1] -1  0       0x000f0000 - 0x000fffff (0x10000) MX[B]
        [2] -1  0       0x000c0000 - 0x000effff (0x30000) MX[B]
        [3] -1  0       0x00000000 - 0x0009ffff (0xa0000) MX[B]
        [4] -1  0       0x0000ffff - 0x0000ffff (0x1) IX[B]
        [5] -1  0       0x00000000 - 0x00000000 (0x1) IX[B]
(II) resource ranges after probing:
        [0] -1  0       0xffffffff - 0xffffffff (0x1) MX[B]
        [1] -1  0       0x000f0000 - 0x000fffff (0x10000) MX[B]
        [2] -1  0       0x000c0000 - 0x000effff (0x30000) MX[B]
        [3] -1  0       0x00000000 - 0x0009ffff (0xa0000) MX[B]
        [4] 0   0       0x000a0000 - 0x000affff (0x10000) MS[B]
        [5] 0   0       0x000b0000 - 0x000b7fff (0x8000) MS[B]
        [6] 0   0       0x000b8000 - 0x000bffff (0x8000) MS[B]
        [7] -1  0       0x0000ffff - 0x0000ffff (0x1) IX[B]
        [8] -1  0       0x00000000 - 0x00000000 (0x1) IX[B]
        [9] 0   0       0x000003b0 - 0x000003bb (0xc) IS[B]
        [10] 0  0       0x000003c0 - 0x000003df (0x20) IS[B]
(II) Loading sub module "vgahw"
(II) LoadModule: "vgahw"

(II) Loading /usr/lib/xorg/modules//libvgahw.so
(II) Module vgahw: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 0.1.0
        ABI class: X.Org Video Driver, version 4.1
(II) Silicon MotionCreating default Display subsection in Screen section
        "Default Screen" for depth/fbbpp 24/32
(==) Silicon MotionDepth 24, (==) framebuffer bpp 32
(==) Silicon MotionRGB weight 888
(==) Silicon MotionDefault visual is TrueColor
(==) Silicon MotionUsing Hardware Cursor
(II) Loading sub module "int10"
(II) LoadModule: "int10"

(II) Loading /usr/lib/xorg/modules//libint10.so
(II) Module int10: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        ABI class: X.Org Video Driver, version 4.1
(II) Silicon MotionPrimary V_BIOS segment is: 0xc000
(II) Loading sub module "vbe"
(II) LoadModule: "vbe"

(II) Loading /usr/lib/xorg/modules//libvbe.so
(II) Module vbe: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.1.0
        ABI class: X.Org Video Driver, version 4.1
(II) Silicon MotionVESA BIOS not detected
(--) Silicon MotionChipset: "LynxEM+"
(II) Silicon MotionvgaHWGetIOBase: hwp->IOBase is 0x03d0, hwp->PIOOffset is 0x0000
(II) Silicon MotionTFT Panel Size = 800x600
(II) Loading sub module "i2c"
(II) LoadModule: "i2c"
(II) Module "i2c" already built-in
(II) Silicon MotionI2C bus "I2C bus" initialized.
(II) Loading sub module "ddc"
(II) LoadModule: "ddc"
(II) Module "ddc" already built-in
(--) Silicon MotionNo DDC signal
(II) Silicon MotionI2C device "I2C bus:ddc2" registered at address 0xA0.
(II) Silicon MotionI2C device "I2C bus:ddc2" removed.
(==) Silicon MotionUsing gamma correction (1.0, 1.0, 1.0)
(--) Silicon Motionvideoram: 4096kB
(--) Silicon MotionDetected current MCLK value of 85.909 MHz
(WW) Silicon Motionxf86UnMapVidMem: cannot find region for [0xb7473000,0x400000]
(II) Silicon MotionConfigured Monitor: Using default hsync range of 31.50-37.90 kHz
(II) Silicon MotionConfigured Monitor: Using default vrefresh range of 50.00-70.00 Hz
(WW) Silicon MotionUnable to estimate virtual size
(II) Silicon MotionClock range:  20.00 to 135.00 MHz
(II) Silicon MotionMode: 640x350 32-bpp, 85.079948Hz
(II) Silicon MotionNot using default mode "640x350" (vrefresh out of range)
(II) Silicon MotionNot using default mode "320x175" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 640x400 32-bpp, 85.079948Hz
(II) Silicon MotionNot using default mode "640x400" (vrefresh out of range)
(II) Silicon MotionNot using default mode "320x200" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 720x400 32-bpp, 85.038902Hz
(II) Silicon MotionNot using default mode "720x400" (vrefresh out of range)
(II) Silicon MotionNot using default mode "360x200" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 640x480 32-bpp, 59.940475Hz
(II) Silicon MotionNot using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 640x480 32-bpp, 72.808800Hz
(II) Silicon MotionNot using default mode "640x480" (vrefresh out of range)
(II) Silicon MotionNot using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 640x480 32-bpp, 75.000000Hz
(II) Silicon MotionNot using default mode "640x480" (vrefresh out of range)
(II) Silicon MotionNot using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 640x480 32-bpp, 85.008308Hz
(II) Silicon MotionNot using default mode "640x480" (hsync out of range)
(II) Silicon MotionNot using default mode "320x240" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 56.250000Hz
(II) Silicon MotionNot using default mode "400x300" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 60.316540Hz
(II) Silicon MotionNot using default mode "400x300" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 72.187569Hz
(II) Silicon MotionNot using default mode "800x600" (hsync out of range)
(II) Silicon MotionNot using default mode "400x300" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 75.000000Hz
(II) Silicon MotionNot using default mode "800x600" (hsync out of range)
(II) Silicon MotionNot using default mode "400x300" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 85.136887Hz
(II) Silicon MotionNot using default mode "800x600" (hsync out of range)
(II) Silicon MotionNot using default mode "400x300" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "512x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1024x768 32-bpp, 60.003841Hz
(II) Silicon MotionNot using default mode "1024x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "512x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1024x768 32-bpp, 70.069359Hz
(II) Silicon MotionNot using default mode "1024x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "512x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1024x768 32-bpp, 75.028580Hz
(II) Silicon MotionNot using default mode "1024x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "512x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1024x768 32-bpp, 84.996689Hz
(II) Silicon MotionNot using default mode "1024x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "512x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 75.000000Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1280x960" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "640x480" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1280x960" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "640x480" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1280x1024" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "640x512" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1280x1024" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "640x512" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1280x1024" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "640x512" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1792x1344" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "896x672" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1792x1344" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "896x672" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1856x1392" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "928x696" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1856x1392" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "928x696" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1440" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x720" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1440" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x720" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 832x624 32-bpp, 74.551270Hz
(II) Silicon MotionNot using default mode "832x624" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "416x312" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 59.997059Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 70.001450Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 74.998001Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 84.998978Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1152x864 32-bpp, 85.057350Hz
(II) Silicon MotionNot using default mode "1152x864" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1152x864" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "576x432" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1360x768 32-bpp, 59.960026Hz
(II) Silicon MotionNot using default mode "1360x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "680x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 1360x768 32-bpp, 59.798992Hz
(II) Silicon MotionNot using default mode "1360x768" (exceeds panel dimensions)
(II) Silicon MotionNot using default mode "680x384" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1400x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "700x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1400x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "700x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1400x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "700x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1400x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "700x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1440x900" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "720x450" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1600x1024" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "800x512" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1680x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "840x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1680x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "840x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1680x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "840x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1680x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "840x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1680x1050" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "840x525" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1080" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x540" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1440" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x720" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "960x540" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1200" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x600" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "1920x1440" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "960x720" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionNot using default mode "2048x1536" (insufficient memory for mode)
(II) Silicon MotionNot using default mode "1024x768" (bad mode clock/interlace/doublescan)
(II) Silicon MotionMode: 800x600 32-bpp, 60.316540Hz
(II) Silicon MotionMode: 800x600 32-bpp, 56.250000Hz
(II) Silicon MotionMode: 640x480 32-bpp, 59.940475Hz
(--) Silicon MotionVirtual size is 800x600 (pitch 800)
(**) Silicon Motion*Default mode "800x600": 40.0 MHz, 37.9 kHz, 60.3 Hz
(II) Silicon MotionModeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
(**) Silicon Motion*Default mode "800x600": 36.0 MHz, 35.2 kHz, 56.2 Hz
(II) Silicon MotionModeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz)
(**) Silicon Motion*Default mode "640x480": 25.2 MHz, 31.5 kHz, 59.9 Hz
(II) Silicon MotionModeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
(==) Silicon MotionDPI set to (96, 96)
(II) Loading sub module "fb"
(II) LoadModule: "fb"

(II) Loading /usr/lib/xorg/modules//libfb.so
(II) Module fb: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.0.0
        ABI class: X.Org ANSI C Emulation, version 0.4
(==) Silicon MotionUsing XAA acceleration architecture
(II) Loading sub module "xaa"
(II) LoadModule: "xaa"

(II) Loading /usr/lib/xorg/modules//libxaa.so
(II) Module xaa: vendor="X.Org Foundation"
        compiled for 1.5.2, module version = 1.2.0
        ABI class: X.Org Video Driver, version 4.1
(II) Loading sub module "ramdac"
(II) LoadModule: "ramdac"
(II) Module "ramdac" already built-in
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC?  No, I don't.
(II) resource ranges after preInit:
        [0] -1  0       0xffffffff - 0xffffffff (0x1) MX[B]
        [1] -1  0       0x000f0000 - 0x000fffff (0x10000) MX[B]
        [2] -1  0       0x000c0000 - 0x000effff (0x30000) MX[B]
        [3] -1  0       0x00000000 - 0x0009ffff (0xa0000) MX[B]
        [4] 0   0       0x000a0000 - 0x000affff (0x10000) MS[B]
        [5] 0   0       0x000b0000 - 0x000b7fff (0x8000) MS[B]
        [6] 0   0       0x000b8000 - 0x000bffff (0x8000) MS[B]
        [7] -1  0       0x0000ffff - 0x0000ffff (0x1) IX[B]
        [8] -1  0       0x00000000 - 0x00000000 (0x1) IX[B]
        [9] 0   0       0x000003b0 - 0x000003bb (0xc) IS[B]
        [10] 0  0       0x000003c0 - 0x000003df (0x20) IS[B]

Fatal server error:
AddScreen/ScreenInit failed for driver 0
-------------------------------------------

I've tried using the xorg.conf file that I used when running fiesty (without problems), and get the same basic error.