System crashes with "Creating nodes with udev"

Early in the boot process, system generates message “Creating nodes with udev.” After a pause, CPU timeout dumps are listed on the display. Likely it is related to wthe display driver (Intel 845G) as the system can be brought up in failsafe mode. /etc/X11.conf is intact.
The system was apparently successfully upgraded online from 11.3 using the zypper method. This issue has appeared a day following the upgrade, after restarting the 11.4 system. Any easy remedy for a non-expert?

Cancel the previous post. Managed to tease it back into operation through rebooting and mousing through unreadable screens. Last reboot seems to have returned the system to normal operation.
Thank you for your time.