The version of gdm I was using is 2.19.4. After upgrade to 2.19.5, the bug is fixed.
-- [Gutsy Tribe 3 x86_64] gdm lost Ubuntu theme (santa rosa) https://bugs.launchpad.net/bugs/129629 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs