I am not sure whether this will solve your problem, but can you try installing "915resolution" package and reboot and see whether usplash see whether you get more resolutions ?
-- Ubuntu splash screen forces 640x480 resolution https://bugs.launchpad.net/bugs/104079 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