I think, the problem is, that my panel doesn't comply with the VESA standard. See attached Xorg log.
** Attachment added: "Xorg log showing the panel attributed very low resolutions." http://librarian.launchpad.net/6930770/Xorg.0.log -- Support for Radeon x1650xt W Dell 3007WFP https://launchpad.net/bugs/95189 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
