Here is one possible solution: xfwm4 needs to be build with MONITOR_ROOT_PIXMAP defined [1]. The built-in compositor will now try to clone the current root background on launch and fall back to the default plain grey background if it fails. LightDM GTK+ Greeter already makes sure that the background picture will remain even after the greeter quits, but it does not set the necessary property for the root window [2].
I am not aware of any drawbacks. However, some testing needs to be done. [1] http://git.xfce.org/xfce/xfwm4/tree/src/compositor.c#n806 [2] http://git.xfce.org/xfce/xfwm4/tree/src/compositor.c#n840 ** Patch added: "xsetroot.patch" https://bugs.launchpad.net/ubuntu/+source/xfwm4/+bug/1232804/+attachment/3894131/+files/xsetroot.patch ** Also affects: lightdm-gtk-greeter Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1232804 Title: [compositing] improve login greeter -> desktop transition To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1232804/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
