Date: 2012jun13 OS: Linux Distro: RedHat/Fedora/CentOS Warning: Not the current version of Fedora Keywords: FC17 Q. Why is X.Org (X Windows) not starting on my Fedora 17 system with an ATI video card? A. The log (/var/log/Xorg.0.log) said it was detected as an ATI card but then it went on to load a mach64 driver that was not found. So the solution was to install that:

yum install xorg-x11-drv-mach64

Here's exactly what the log said:

[ 96.331] (II) LoadModule: "ati" [ 96.338] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so [ 96.338] (II) Module ati: vendor="X.Org Foundation" [ 96.338] compiled for 1.12.0, module version = 6.14.99 [ 96.339] Module class: X.Org Video Driver [ 96.339] ABI class: X.Org Video Driver, version 12.0 [ 96.339] (II) LoadModule: "mach64" [ 96.346] (WW) Warning, couldn't open module mach64 [ 96.347] (II) UnloadModule: "mach64" [ 96.347] (II) Unloading mach64 [ 96.347] (EE) Failed to load module "mach64" (module does not exist, 0) [ 96.347] (EE) No drivers available. [ 96.347] Fatal server error: [ 96.347] no screens found [ 96.347]