for what it's worth. I ran into a similar problem. The pdo.ini file was missing but had a pdo_mysql.ini file. Added a pdo.ini file, pointed it at pdo.so and everything worked.
/etc/php5/cli/conf.d# cat pdo.ini ; configuration for php MySQL module extension=pdo.so -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to php5 in Ubuntu. https://bugs.launchpad.net/bugs/1034454 Title: 12.04 Dist-upgrade breaks PHP extensions > pdo_mysql.so symbols To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1034454/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
