Using the default configuration, as of grub2 2.02~beta2-36 the edit dialog seems to no longer be obscured as in the screenshot I had uploaded in 2014: it is drawn over only a centered portion of the screen (see new screenshot "unobscured edit dialog").
However, I've also found that if the GRUB_THEME="/boot/grub/themes /ubuntu-mate/theme.txt" parameter is specified in /etc/default/grub, then update-grub reports "Found theme: /boot/grub/themes/ubuntu- mate/theme.txt", and the submenus use graphical rather than console appearance, and are not obscured (see new screenshot "graphical submenu"). I'm guessing the GRUB_THEME approach for setting the theme is what grub recommends, and that the current method used (file /usr/share/plymouth/themes/ubuntu-mate-logo/ubuntu-mate-logo.grub from package plymouth-theme-ubuntu-mate-logo) is somehow insufficient, since each approach seems to have a different effect on how grub.cfg is generated. So while there may be an issue in how grub is being configured to use the theme (whether from the right package or using the right configuration parameters), there might still be an inconsistency in how grub itself mixes graphical and console interfaces, or fails to detect improper theme configuration and fallback to providing a safe workaround for the user. ** Attachment added: "graphical submenu" https://bugs.launchpad.net/ubuntu-mate/+bug/1404006/+attachment/4640333/+files/graphical%20submenu.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1404006 Title: grub2-themes-ubuntu-mate partially obscured submenus To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1404006/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs