Hi Christopher, The issues still exist, so still "unknown display" in All Settings - Displays", wrong resolution (highest 1024x786) on U2415, power saving issue on U2415. The issues seem exactly the same as on trusty.
I was not able to use the daily live iso, for xdiagnose extra debugging option requires /etc/default/grub to be updated and only works after reboot. I had a physical Vivid install already running on this laptop (multi-boot), which i keep as clean as possible and use for this kind of issues, so no customizations. So I upgraded this vivid install to the current state with apt-get dist-upgrade. After that I enabled xdiagnose extra debugging, deleted ~/.config/monitors.xml, booted and started the apport collection as you requested. Please tell me if I can help you with more information. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1412730 Title: DELL U2415 monitor detection issues To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1412730/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs