cat Xorg.0.log | grep "(EE)"
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(EE) fglrx(0): [agp] unable to acquire AGP, error "xf86_ENODEV"
(EE) fglrx(0): cannot init AGP
(EE) AIGLX: Screen 0 is not DRI capable