I have the same problem. My video card is the S3 Unichrome K8M800. I am using Ubuntu Edgy Eft, i386.
More information: $ lspci -vv [..] 01:00.0 VGA compatible controller: VIA Technologies, Inc. S3 Unichrome Pro VGA Adapter (rev 01) (prog-if 00 [VGA]) Subsystem: Micro-Star International Co., Ltd. Unknown device 7142 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 (500ns min) Interrupt: pin A routed to IRQ 201 Region 0: Memory at f0000000 (32-bit, prefetchable) [size=64M] Region 1: Memory at f4000000 (32-bit, non-prefetchable) [size=16M] [virtual] Expansion ROM at f5000000 [disabled] [size=64K] Capabilities: <access denied> $cat xorg.conf [...] Section "Device" identifier "VIA Technologies, Inc. S3 Unichrome Pro VGA Adapter" boardname "S3 UniChrome" busid "PCI:1:0:0" driver "unichrome" screen 0 vendorname "S3" EndSection [...] $cat Xorg.0.log [...] (II) LoadModule: "unichrome" (II) Loading /usr/lib/xorg/modules/drivers/unichrome_drv.so (EE) LoadModule: Module unichrome does not have a unichromeModuleData data object. (II) UnloadModule: "unichrome" (II) Unloading /usr/lib/xorg/modules/drivers/unichrome_drv.so (EE) Failed to load module "unichrome" (invalid module, 0) [...] -- xorg doesn't startup with unichrome driver (on edgy) https://launchpad.net/bugs/68901 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs