I think you are on gentoo, but I hate to guess.
Looks like you have several issue on your system, don't know what happened before and we have no info about your system.
The message "xrdb: not found" indicates that the xrdb program, used to manage X Window System resources, is either not installed on your system or not in the search path.
Try to take a look.
About the "ICE I/O Error" messages indicate communication issues with the ICE (Inter-Client Exchange) protocol used for communication between desktop applications. You may try restarting the XFCE desktop or performing a new login to address these issues.
What was last thing you did before this restart?
Can you post emerge --info just to have some information?
Maybe next time post in "Distribution/Gentoo" can help to revive a pretty dead section of the forum