it's from debian/xsfbs/xsfbs.sh in almost all x packages, its harmless and the option is not used for anything at least.
http://git.debian.org/?p=pkg-xorg/xserver/xorg- server.git;a=commit;h=7deebf983f53c505bc25171ab77fdc408f250a6e -- dpkg: warning: obsolete option '--print-installation-architecture' https://bugs.launchpad.net/bugs/403316 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp