I don't know if it is relevant here, but I got the same response from xrandr (about gamma), and also struggled with wrong resolutions. For me, the cause was the 'nomodeset' kernel parameter, this (i.e. disabling kernel modesetting) caused the i915 graphics driver to fail, and the vesa driver to be used instead. Perhaps you can check in /var/log/Xorg.0.log that the correct driver is being used? The log also contains the kernel command linke - although you may have to use 'nomodeset' to get nvidia to work (that was the reason it was in mine - when I removed the graphics card, I forgot to revert the grub options).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1078695 Title: xrandr : Failed to get size of gamma for output default To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/x11-utils/+bug/1078695/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
