I have a similar problem... still unresolved check my thread
For the APM, control in your kernel configuration if it's enabled the APM support.
For the AGP try to downgrade the rate by the BIOS and check if function(my videocard function at 2x max; at 4x X server chrash at startup).
Check also if the AGP drive strength value is in the range 0xEA - 0xEE.
Goodnight (especially 4me).