As a major set-back to Canonical’s plans for Mir, Intell has pulled the carpet from underneath Canonical by announcing that they won’t support XMir.
Intel’s Chris Wilson mentioned in a Git commit:
We do not condone or support Canonical in the course of action they have chosen, and will not carry XMir patches upstream.
The way Canonical handled Mir was much criticized by the Free Software community. Considering that Intel and other hardware vendors have developers working on Wayland (there was a heated debate with Kristian Høgsberg, the Wayland found who works for Intel), it was naive for Canonical to attack the project and assume it will gain support from the same developers.
The way Intel management has pulled the support for Canonical’s XMir is a very strong message for the company. Canonical has been doing its ‘own’ thing lately, while Gnome may not have enough muscles to tell Canonical to do the right thing, Intel does have the muscle.
Either Canonical starts working with the free software communities, instead of forking things, or they will have to carry the burden on their own.
As Phoronix reports, “Canonical will now need to carry the XMir support out-of-tree from the xf86-video-intel driver. Canonical is also carrying patched versions of Mesa, xf86-video-ati, and xf86-video-nouveau for being able to support Mir/XMir in Ubuntu 13.10. The binary AMD and NVIDIA graphics drivers also remain incompatible with Mir.”