[gentoo-user] difference between /etc/init.d/script start and runing in default run-level

Sorry for the duplicate if you have seen the mail before. I just want to make the question more specific. After installing kde through emerge kdebase-meta and test with startx of no problem, I add xdm to default run-level with modifying display manager to kdm in rc.conf. However when I reboot the

[gentoo-user] strange problem with kdm

After installing kde through emerge kdebase-meta and test with startx of no problem, I add xdm to default runlevel with modifying display manager to kdm in rc.conf. However when I reboot the computer, the screen turn black for a second and then up without kdm start. The log file only contain